A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Any device or element which converts an input signal into an output signal of a different form. Examples include the microphone, phonographic pickup, loudspeaker, barometer, photoelectric cell, automobile horn, doorbell, and underwater sound transducer. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)
PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.
Transducers that are activated by pressure changes, e.g., blood pressure.
The pressure due to the weight of fluid.
A signal transducer and activator of transcription that mediates cellular responses to INTERLEUKIN-6 family members. STAT3 is constitutively activated in a variety of TUMORS and is a major downstream transducer for the CYTOKINE RECEPTOR GP130.
Techniques for measuring blood pressure.
Pressure within the cranial cavity. It is influenced by brain mass, the circulatory system, CSF dynamics, and skull rigidity.
Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more.
The pressure of the fluids in the eye.
Method in which repeated blood pressure readings are made while the patient undergoes normal daily activities. It allows quantitative analysis of the high blood pressure load over time, can help distinguish between types of HYPERTENSION, and can assess the effectiveness of antihypertensive therapy.
The force per unit area that the air exerts on any surface in contact with it. Primarily used for articles pertaining to air pressure within a closed environment.
The pressure at any point in an atmosphere due solely to the weight of the atmospheric gases above the point concerned.
The blood pressure in the VEINS. It is usually measured to assess the filling PRESSURE to the HEART VENTRICLE.
A signal transducer and activator of transcription that mediates cellular responses to INTERFERONS. Stat1 interacts with P53 TUMOR SUPPRESSOR PROTEIN and regulates expression of GENES involved in growth control and APOPTOSIS.
The number of times the HEART VENTRICLES contract per unit of time, usually per minute.
The blood pressure in the ARTERIES. It is commonly measured with a SPHYGMOMANOMETER on the upper arm which represents the arterial pressure in the BRACHIAL ARTERY.
The pressure within a CARDIAC VENTRICLE. Ventricular pressure waveforms can be measured in the beating heart by catheterization or estimated using imaging techniques (e.g., DOPPLER ECHOCARDIOGRAPHY). The information is useful in evaluating the function of the MYOCARDIUM; CARDIAC VALVES; and PERICARDIUM, particularly with simultaneous measurement of other (e.g., aortic or atrial) pressures.
The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway.
A signal transducer and activator of transcription that mediates cellular responses to a variety of CYTOKINES. Stat5 activation is associated with transcription of CELL CYCLE regulators such as CYCLIN KINASE INHIBITOR P21 and anti-apoptotic genes such as BCL-2 GENES. Stat5 is constitutively activated in many patients with acute MYELOID LEUKEMIA.
The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.
Diffusible gene products that act on homologous or heterologous molecules of viral or cellular DNA to regulate the expression of proteins.
The blood pressure in the central large VEINS of the body. It is distinguished from peripheral venous pressure which occurs in an extremity.
Methods of creating machines and devices.
The blood pressure as recorded after wedging a CATHETER in a small PULMONARY ARTERY; believed to reflect the PRESSURE in the pulmonary CAPILLARIES.
Drugs used in the treatment of acute or chronic vascular HYPERTENSION regardless of pharmacological mechanism. Among the antihypertensive agents are DIURETICS; (especially DIURETICS, THIAZIDE); ADRENERGIC BETA-ANTAGONISTS; ADRENERGIC ALPHA-ANTAGONISTS; ANGIOTENSIN-CONVERTING ENZYME INHIBITORS; CALCIUM CHANNEL BLOCKERS; GANGLIONIC BLOCKERS; and VASODILATOR AGENTS.
Photosensory rhodopsins found in microorganisms such as HALOBACTERIA. They convert light signals into biochemical information that regulates certain cellular functions such as flagellar motor activity.
The pressure required to prevent the passage of solvent through a semipermeable membrane that separates a pure solvent from a solution of the solvent and solute or that separates different concentrations of a solution. It is proportional to the osmolality of the solution.
Elements of limited time intervals, contributing to particular results or situations.
The visualization of deep structures of the body by recording the reflections or echoes of ultrasonic pulses directed into the tissues. Use of ultrasound for imaging or diagnostic purposes employs frequencies ranging from 1.6 to 10 megahertz.
Period of contraction of the HEART, especially of the HEART VENTRICLES.
The force that opposes the flow of BLOOD through a vascular bed. It is equal to the difference in BLOOD PRESSURE across the vascular bed divided by the CARDIAC OUTPUT.
A subfield of acoustics dealing in the radio frequency range higher than acoustic SOUND waves (approximately above 20 kilohertz). Ultrasonic radiation is used therapeutically (DIATHERMY and ULTRASONIC THERAPY) to generate HEAT and to selectively destroy tissues. It is also used in diagnostics, for example, ULTRASONOGRAPHY; ECHOENCEPHALOGRAPHY; and ECHOCARDIOGRAPHY, to visually display echoes received from irradiated tissues.
The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)
A family of transcription factors containing SH2 DOMAINS that are involved in CYTOKINE-mediated SIGNAL TRANSDUCTION. STAT transcription factors are recruited to the cytoplasmic region of CELL SURFACE RECEPTORS and are activated via PHOSPHORYLATION. Once activated they dimerize and translocate into the CELL NUCLEUS where they influence GENE expression. They play a role in regulating CELL GROWTH PROCESSES and CELL DIFFERENTIATION. STAT transcription factors are inhibited by SUPPRESSOR OF CYTOKINE SIGNALING PROTEINS and PROTEIN INHIBITORS OF ACTIVATED STAT.
A cytokine receptor that acts through the formation of oligomeric complexes of itself with a variety of CYTOKINE RECEPTORS.
Measurement of the pressure or tension of liquids or gases with a manometer.
Post-systolic relaxation of the HEART, especially the HEART VENTRICLES.
The major protein constituents of milk are CASEINS and whey proteins such as LACTALBUMIN and LACTOGLOBULINS. IMMUNOGLOBULINS occur in high concentrations in COLOSTRUM and in relatively lower concentrations in milk. (Singleton and Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed, p554)
A family of intracellular tyrosine kinases that participate in the signaling cascade of cytokines by associating with specific CYTOKINE RECEPTORS. They act upon STAT TRANSCRIPTION FACTORS in signaling pathway referred to as the JAK/STAT pathway. The name Janus kinase refers to the fact the proteins have two phosphate-transferring domains.
A Janus kinase subtype that is involved in signaling from GROWTH HORMONE RECEPTORS; PROLACTIN RECEPTORS; and a variety of CYTOKINE RECEPTORS such as ERYTHROPOIETIN RECEPTORS and INTERLEUKIN RECEPTORS. Dysregulation of Janus kinase 2 due to GENETIC TRANSLOCATIONS have been associated with a variety of MYELOPROLIFERATIVE DISORDERS.
The rhythmical expansion and contraction of an ARTERY produced by waves of pressure caused by the ejection of BLOOD from the left ventricle of the HEART as it contracts.
A family of structurally related proteins that are induced by CYTOKINES and negatively regulate cytokine-mediated SIGNAL TRANSDUCTION PATHWAYS. SOCS proteins contain a central SH2 DOMAIN and a C-terminal region of homology known as the SOCS box.
The introduction of a phosphoryl group into a compound through the formation of an ester bond between the compound and a phosphorus moiety.
Proteins which bind to DNA. The family includes proteins which bind to both double- and single-stranded DNA and also includes specific DNA binding proteins in serum which can be used as markers for malignant diseases.
The branch of physics that deals with sound and sound waves. In medicine it is often applied in procedures in speech and hearing studies. With regard to the environment, it refers to the characteristics of a room, auditorium, theatre, building, etc. that determines the audibility or fidelity of sounds in it. (From Random House Unabridged Dictionary, 2d ed)
A signal transducer and activator of transcription that mediates cellular responses to INTERLEUKIN-4. Stat6 has been shown to partner with NF-KAPPA B and CCAAT-ENHANCER-BINDING PROTEINS to regulate GENETIC TRANSCRIPTION of interleukin-4 responsive GENES.
Manometric pressure of the CEREBROSPINAL FLUID as measured by lumbar, cerebroventricular, or cisternal puncture. Within the cranial cavity it is called INTRACRANIAL PRESSURE.
Light driven chloride ion pumps that are ubiquitously found in halophilic archaea (HALOBACTERIALES).
The flow of BLOOD through or around an organ or region of the body.
A method of mechanical ventilation in which pressure is maintained to increase the volume of gas remaining in the lungs at the end of expiration, thus reducing the shunting of blood through the lungs and improving gas exchange.
A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.
The volume of BLOOD passing through the HEART per unit of time. It is usually expressed as liters (volume) per minute so as not to be confused with STROKE VOLUME (volume per beat).
A technique of respiratory therapy, in either spontaneously breathing or mechanically ventilated patients, in which airway pressure is maintained above atmospheric pressure throughout the respiratory cycle by pressurization of the ventilatory circuit. (On-Line Medical Dictionary [Internet]. Newcastle upon Tyne(UK): The University Dept. of Medical Oncology: The CancerWEB Project; c1997-2003 [cited 2003 Apr 17]. Available from: http://cancerweb.ncl.ac.uk/omd/)
A Janus kinase subtype that is involved in signaling from a broad variety of CYTOKINE RECEPTORS.
The venous pressure measured in the PORTAL VEIN.
The use of focused, high-frequency sound waves to produce local hyperthermia in certain diseased or injured parts of the body or to destroy the diseased tissue.
A cytokine that stimulates the growth and differentiation of B-LYMPHOCYTES and is also a growth factor for HYBRIDOMAS and plasmacytomas. It is produced by many different cells including T-LYMPHOCYTES; MONOCYTES; and FIBROBLASTS.
A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company.
Abnormally low BLOOD PRESSURE that can result in inadequate blood flow to the brain and other vital organs. Common symptom is DIZZINESS but greater negative impacts on the body occur when there is prolonged depravation of oxygen and nutrients.
The evaluation of incidents involving the loss of function of a device. These evaluations are used for a variety of purposes such as to determine the failure rates, the causes of failures, costs of failures, and the reliability and maintainability of devices.
The thoracolumbar division of the autonomic nervous system. Sympathetic preganglionic fibers originate in neurons of the intermediolateral column of the spinal cord and project to the paravertebral and prevertebral ganglia, which in turn project to target organs. The sympathetic nervous system mediates the body's response to stressful situations, i.e., the fight or flight reactions. It often acts reciprocally to the parasympathetic system.
Body organ that filters blood for the secretion of URINE and that regulates ion concentrations.
The continuous measurement of physiological processes, blood pressure, heart rate, renal output, reflexes, respiration, etc., in a patient or experimental animal; includes pharmacologic monitoring, the measurement of administered drugs or their metabolites in the blood, tissues, or urine.
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
The relationship between the dose of an administered drug and the response of the organism to the drug.
Naturally occurring or experimentally induced animal diseases with pathological processes sufficiently similar to those of human diseases. They are used as study models for human diseases.
The hollow, muscular organ that maintains the circulation of the blood.
Receptors in the vascular system, particularly the aorta and carotid sinus, which are sensitive to stretch of the vessel walls.
A highly specific (Leu-Leu) endopeptidase that generates ANGIOTENSIN I from its precursor ANGIOTENSINOGEN, leading to a cascade of reactions which elevate BLOOD PRESSURE and increase sodium retention by the kidney in the RENIN-ANGIOTENSIN SYSTEM. The enzyme was formerly listed as EC 3.4.99.19.
An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.
A signal transducer and activator of transcription that mediates cellular responses to TYPE I INTERFERONS. Stat2 protein is associated constitutively with INTERFERON REGULATORY FACTOR-9. After PHOSPHORYLATION Stat2 forms the IFN-STIMULATED GENE FACTOR 3 COMPLEX to regulate expression of target GENES.
A strain of Rattus norvegicus with elevated blood pressure used as a model for studying hypertension and stroke.
The position or attitude of the body.
Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.
The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.
Distensibility measure of a chamber such as the lungs (LUNG COMPLIANCE) or bladder. Compliance is expressed as a change in volume per unit change in pressure.
The main trunk of the systemic arteries.
The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (= OXYGEN CONSUMPTION) or cell respiration (= CELL RESPIRATION).
External decompression applied to the lower body. It is used to study orthostatic intolerance and the effects of gravitation and acceleration, to produce simulated hemorrhage in physiologic research, to assess cardiovascular function, and to reduce abdominal stress during childbirth.
Resistance and recovery from distortion of shape.
The vessels carrying blood away from the heart.
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
Niobium. A metal element atomic number 41, atomic weight 92.906, symbol Nb. (From Dorland, 28th ed)
Measurement of ocular tension (INTRAOCULAR PRESSURE) with a tonometer. (Cline, et al., Dictionary of Visual Science, 4th ed)
A response by the BARORECEPTORS to increased BLOOD PRESSURE. Increased pressure stretches BLOOD VESSELS which activates the baroreceptors in the vessel walls. The net response of the CENTRAL NERVOUS SYSTEM is a reduction of central sympathetic outflow. This reduces blood pressure both by decreasing peripheral VASCULAR RESISTANCE and by lowering CARDIAC OUTPUT. Because the baroreceptors are tonically active, the baroreflex can compensate rapidly for both increases and decreases in blood pressure.
The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.
The use of focused, high-frequency sound waves to destroy tissue. It is sometimes used in conjunction with but is distinct from INTERVENTIONAL ULTRASONOGRAPHY.
A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.
A form of compensated hydrocephalus characterized clinically by a slowly progressive gait disorder (see GAIT DISORDERS, NEUROLOGIC), progressive intellectual decline, and URINARY INCONTINENCE. Spinal fluid pressure tends to be in the high normal range. This condition may result from processes which interfere with the absorption of CSF including SUBARACHNOID HEMORRHAGE, chronic MENINGITIS, and other conditions. (From Adams et al., Principles of Neurology, 6th ed, pp631-3)
Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.
Theoretical representations that simulate the behavior or activity of the cardiovascular system, processes, or phenomena; includes the use of mathematical equations, computers and other electronic equipment.
The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs and stimuli, hormone secretion, sleeping, and feeding.
Devices or objects in various imaging techniques used to visualize or enhance visualization by simulating conditions encountered in the procedure. Phantoms are used very often in procedures employing or measuring x-irradiation or radioactive material to evaluate performance. Phantoms often have properties similar to human tissue. Water demonstrates absorbing properties similar to normal tissue, hence water-filled phantoms are used to map radiation levels. Phantoms are used also as teaching aids to simulate real conditions with x-ray or ultrasonic machines. (From Iturralde, Dictionary and Handbook of Nuclear Medicine and Clinical Imaging, 1990)
Rhythmic, intermittent propagation of a fluid through a BLOOD VESSEL or piping system, in contrast to constant, smooth propagation, which produces laminar flow.
Protein kinases that catalyze the PHOSPHORYLATION of TYROSINE residues in proteins with ATP or other nucleotides as phosphate donors.
Precursor of epinephrine that is secreted by the adrenal medulla and is a widespread central and autonomic neurotransmitter. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers and of the diffuse projection system in the brain arising from the locus ceruleus. It is also found in plants and is used pharmacologically as a sympathomimetic.
Increased pressure within the cranial vault. This may result from several conditions, including HYDROCEPHALUS; BRAIN EDEMA; intracranial masses; severe systemic HYPERTENSION; PSEUDOTUMOR CEREBRI; and other disorders.
An octapeptide that is a potent but labile vasoconstrictor. It is produced from angiotensin I after the removal of two amino acids at the C-terminal by ANGIOTENSIN CONVERTING ENZYME. The amino acid in position 5 varies in different species. To block VASOCONSTRICTION and HYPERTENSION effect of angiotensin II, patients are often treated with ACE INHIBITORS or with ANGIOTENSIN II TYPE 1 RECEPTOR BLOCKERS.
The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs.
The physical or mechanical action of the LUNGS; DIAPHRAGM; RIBS; and CHEST WALL during respiration. It includes airflow, lung volume, neural and reflex controls, mechanoreceptors, breathing patterns, etc.
A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain.
An involuntary movement or exercise of function in a part, excited in response to a stimulus applied to the periphery and transmitted to the brain or spinal cord.
A genus of rod-shaped, extremely halophilic HALOBACTERIACEAE which grows in alkaline conditions. They are strictly aerobic and some strains are motile. Natronobacterium is found in soda lakes, alkaline salterns, and soda soils.
Contractile activity of the MYOCARDIUM.
The hemodynamic and electrophysiological action of the left HEART VENTRICLE. Its measurement is an important aspect of the clinical evaluation of patients with heart disease to determine the effects of the disease on cardiac performance.
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.
A signal transducer and activator of transcription that mediates cellular responses to INTERLEUKIN-12 in T-LYMPHOCYTES. Stat4 is an important signaling molecule for differentiation in TH1 CELLS.
Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation.
The properties, processes, and behavior of biological systems under the action of mechanical forces.
The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms.
Transmission of the readings of instruments to a remote location by means of wires, radio waves, or other means. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic.
The HEART and the BLOOD VESSELS by which BLOOD is pumped and circulated through the body.
The physiological narrowing of BLOOD VESSELS by contraction of the VASCULAR SMOOTH MUSCLE.
Strains of mice in which certain GENES of their GENOMES have been disrupted, or "knocked-out". To produce knockouts, using RECOMBINANT DNA technology, the normal DNA sequence of the gene being studied is altered to prevent synthesis of a normal gene product. Cloned cells in which this DNA alteration is successful are then injected into mouse EMBRYOS to produce chimeric mice. The chimeric mice are then bred to yield a strain in which all the cells of the mouse contain the disrupted gene. Knockout mice are used as EXPERIMENTAL ANIMAL MODELS for diseases (DISEASE MODELS, ANIMAL) and to clarify the functions of the genes.
Instruments for measuring arterial blood pressure consisting of an inflatable cuff, inflating bulb, and a gauge showing the blood pressure. (Stedman, 26th ed)
Enlargement of the HEART, usually indicated by a cardiothoracic ratio above 0.50. Heart enlargement may involve the right, the left, or both HEART VENTRICLES or HEART ATRIA. Cardiomegaly is a nonspecific symptom seen in patients with chronic systolic heart failure (HEART FAILURE) or several forms of CARDIOMYOPATHIES.
Treatment process involving the injection of fluid into an organ or tissue.
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.
Computer-assisted processing of electric, ultrasonic, or electronic signals to interpret function and activity.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
The muscle tissue of the HEART. It is composed of striated, involuntary muscle cells (MYOCYTES, CARDIAC) connected to form the contractile pump to generate blood flow.
A scientific tool based on ULTRASONOGRAPHY and used not only for the observation of microstructure in metalwork but also in living tissue. In biomedical application, the acoustic propagation speed in normal and abnormal tissues can be quantified to distinguish their tissue elasticity and other properties.
RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm.
Persistent high BLOOD PRESSURE due to KIDNEY DISEASES, such as those involving the renal parenchyma, the renal vasculature, or tumors that secrete RENIN.
A state characterized by loss of feeling or sensation. This depression of nerve function is usually the result of pharmacologic action and is induced to allow performance of surgery or other painful procedures.
A strain of Rattus norvegicus used as a normotensive control for the spontaneous hypertensive rats (SHR).
Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).
The lower right and left chambers of the heart. The right ventricle pumps venous BLOOD into the LUNGS and the left ventricle pumps oxygenated blood into the systemic arterial circulation.
The physiological widening of BLOOD VESSELS by relaxing the underlying VASCULAR SMOOTH MUSCLE.
Established cell cultures that have the potential to propagate indefinitely.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
The volume of air inspired or expired during each normal, quiet respiratory cycle. Common abbreviations are TV or V with subscript T.
Cell surface receptors that are specific for INTERLEUKIN-6. They are present on T-LYMPHOCYTES, mitogen-activated B-LYMPHOCYTES, and peripheral MONOCYTES. The receptors are heterodimers of the INTERLEUKIN-6 RECEPTOR ALPHA SUBUNIT and the CYTOKINE RECEPTOR GP130.
Increased VASCULAR RESISTANCE in the PULMONARY CIRCULATION, usually secondary to HEART DISEASES or LUNG DISEASES.
Drugs used to cause constriction of the blood vessels.
The design or construction of objects greatly reduced in scale.
A cell line derived from cultured tumor cells.
A free radical gas produced endogenously by a variety of mammalian cells, synthesized from ARGININE by NITRIC OXIDE SYNTHASE. Nitric oxide is one of the ENDOTHELIUM-DEPENDENT RELAXING FACTORS released by the vascular endothelium and mediates VASODILATION. It also inhibits platelet aggregation, induces disaggregation of aggregated platelets, and inhibits platelet adhesion to the vascular endothelium. Nitric oxide activates cytosolic GUANYLATE CYCLASE and thus elevates intracellular levels of CYCLIC GMP.
The circulation of blood through the CORONARY VESSELS of the HEART.
Any method of artificial breathing that employs mechanical or non-mechanical means to force the air into and out of the lungs. Artificial respiration or ventilation is used in individuals who have stopped breathing or have RESPIRATORY INSUFFICIENCY to increase their intake of oxygen (O2) and excretion of carbon dioxide (CO2).
Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.
Drugs used to cause dilation of the blood vessels.
Sodium chloride used in foods.
An alpha-1 adrenergic agonist used as a mydriatic, nasal decongestant, and cardiotonic agent.
A ubiquitous sodium salt that is commonly used to season food.
Volume of circulating BLOOD. It is the sum of the PLASMA VOLUME and ERYTHROCYTE VOLUME.
The dilated portion of the common carotid artery at its bifurcation into external and internal carotids. It contains baroreceptors which, when stimulated, cause slowing of the heart, vasodilatation, and a fall in blood pressure.
Pathological conditions involving the CARDIOVASCULAR SYSTEM including the HEART; the BLOOD VESSELS; or the PERICARDIUM.
Statistical models in which the value of a parameter for a given value of a factor is assumed to be equal to a + bx, where a and b are constants. The models predict a linear regression.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
Measurement of oxygen and carbon dioxide in the blood.
The circulation of blood through the BLOOD VESSELS of the BRAIN.
Either of the two principal arteries on both sides of the neck that supply blood to the head and neck; each divides into two branches, the internal carotid artery and the external carotid artery.
A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.
Use or insertion of a tubular device into a duct, blood vessel, hollow organ, or body cavity for injecting or withdrawing fluids for diagnostic or therapeutic purposes. It differs from INTUBATION in that the tube here is used to restore or maintain patency in obstructions.
Identification of proteins or peptides that have been electrophoretically separated by blot transferring from the electrophoresis gel to strips of nitrocellulose paper, followed by labeling with antibody probes.
Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction.
A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment.
The circulation of the BLOOD through the vessels of the KIDNEY.
Enlargement of the LEFT VENTRICLE of the heart. This increase in ventricular mass is attributed to sustained abnormal pressure or volume loads and is a contributor to cardiovascular morbidity and mortality.
A class of drugs whose main indications are the treatment of hypertension and heart failure. They exert their hemodynamic effect mainly by inhibiting the renin-angiotensin system. They also modulate sympathetic nervous system activity and increase prostaglandin synthesis. They cause mainly vasodilation and mild natriuresis without affecting heart rate and contractility.
A species of halophilic archaea found in salt lakes. Some strains form a PURPLE MEMBRANE under anaerobic conditions.
Small encapsulated gas bubbles (diameters of micrometers) that can be used as CONTRAST MEDIA, and in other diagnostic and therapeutic applications. Upon exposure to sufficiently intense ultrasound, microbubbles will cavitate, rupture, disappear, release gas content. Such characteristics of the microbubbles can be used to enhance diagnostic tests, dissolve blood clots, and deliver drugs or genes for therapy.
Proteins found in any species of archaeon.
A diet which contains very little sodium chloride. It is prescribed by some for hypertension and for edematous states. (Dorland, 27th ed)
Sodium or sodium compounds used in foods or as a food. The most frequently used compounds are sodium chloride or sodium glutamate.
One of the mechanisms by which CELL DEATH occurs (compare with NECROSIS and AUTOPHAGOCYTOSIS). Apoptosis is the mechanism responsible for the physiological deletion of cells and appears to be intrinsically programmed. It is characterized by distinctive morphologic changes in the nucleus and cytoplasm, chromatin cleavage at regularly spaced sites, and the endonucleolytic cleavage of genomic DNA; (DNA FRAGMENTATION); at internucleosomal sites. This mode of cell death serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth.
Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.
The muscular membranous segment between the PHARYNX and the STOMACH in the UPPER GASTROINTESTINAL TRACT.
A BLOOD PRESSURE regulating system of interacting components that include RENIN; ANGIOTENSINOGEN; ANGIOTENSIN CONVERTING ENZYME; ANGIOTENSIN I; ANGIOTENSIN II; and angiotensinase. Renin, an enzyme produced in the kidney, acts on angiotensinogen, an alpha-2 globulin produced by the liver, forming ANGIOTENSIN I. Angiotensin-converting enzyme, contained in the lung, acts on angiotensin I in the plasma converting it to ANGIOTENSIN II, an extremely powerful vasoconstrictor. Angiotensin II causes contraction of the arteriolar and renal VASCULAR SMOOTH MUSCLE, leading to retention of salt and water in the KIDNEY and increased arterial blood pressure. In addition, angiotensin II stimulates the release of ALDOSTERONE from the ADRENAL CORTEX, which in turn also increases salt and water retention in the kidney. Angiotensin-converting enzyme also breaks down BRADYKININ, a powerful vasodilator and component of the KALLIKREIN-KININ SYSTEM.
The motor activity of the GASTROINTESTINAL TRACT.
Sodium excretion by URINATION.
Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood.
All of the processes involved in increasing CELL NUMBER including CELL DIVISION.
The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.
The contribution to barometric PRESSURE of gaseous substance in equilibrium with its solid or liquid phase.
Processes and properties of the CARDIOVASCULAR SYSTEM as a whole or of any of its parts.
A family of synthetic protein tyrosine kinase inhibitors. They selectively inhibit receptor autophosphorylation and are used to study receptor function.
A member of the alkali group of metals. It has the atomic symbol Na, atomic number 11, and atomic weight 23.
Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time.
The rate at which oxygen is used by a tissue; microliters of oxygen STPD used per milligram of tissue per hour; the rate at which oxygen enters the blood from alveolar gas, equal in the steady state to the consumption of oxygen by tissue metabolism throughout the body. (Stedman, 25th ed, p346)
The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.
An indicator of body density as determined by the relationship of BODY WEIGHT to BODY HEIGHT. BMI=weight (kg)/height squared (m2). BMI correlates with body fat (ADIPOSE TISSUE). Their relationship varies with age and gender. For adults, BMI falls into these categories: below 18.5 (underweight); 18.5-24.9 (normal); 25.0-29.9 (overweight); 30.0 and above (obese). (National Center for Health Statistics, Centers for Disease Control and Prevention)
A procedure involving placement of a tube into the trachea through the mouth or nose in order to provide a patient with oxygen and anesthesia.
A process involving chance used in therapeutic trials or other research endeavor for allocating experimental subjects, human or animal, between treatment and control groups, or among treatment groups. It may also apply to experiments on inanimate objects.
The movement of the BLOOD as it is pumped through the CARDIOVASCULAR SYSTEM.
That portion of the body that lies between the THORAX and the PELVIS.
Relatively complete absence of oxygen in one or more tissues.
Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.
An ocular disease, occurring in many forms, having as its primary characteristics an unstable or a sustained increase in the intraocular pressure which the eye cannot withstand without damage to its structure or impairment of its function. The consequences of the increased pressure may be manifested in a variety of symptoms, depending upon type and severity, such as excavation of the optic disk, hardness of the eyeball, corneal anesthesia, reduced visual acuity, seeing of colored halos around lights, disturbed dark adaptation, visual field defects, and headaches. (Dictionary of Visual Science, 4th ed)
The processes whereby the internal environment of an organism tends to remain balanced and stable.
The uptake of naked or purified DNA by CELLS, usually meaning the process as it occurs in eukaryotic cells. It is analogous to bacterial transformation (TRANSFORMATION, BACTERIAL) and both are routinely employed in GENE TRANSFER TECHNIQUES.
The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.
A heterogeneous condition in which the heart is unable to pump out sufficient blood to meet the metabolic need of the body. Heart failure can be caused by structural defects, functional abnormalities (VENTRICULAR DYSFUNCTION), or a sudden overload beyond its capacity. Chronic heart failure is more common than acute heart failure which results from sudden insult to cardiac function, such as MYOCARDIAL INFARCTION.
Measurement of intracardiac blood flow using an M-mode and/or two-dimensional (2-D) echocardiogram while simultaneously recording the spectrum of the audible Doppler signal (e.g., velocity, direction, amplitude, intensity, timing) reflected from the moving column of red blood cells.
A variation of the PCR technique in which cDNA is made from RNA via reverse transcription. The resultant cDNA is then amplified using standard PCR protocols.
The major interferon produced by mitogenically or antigenically stimulated LYMPHOCYTES. It is structurally different from TYPE I INTERFERON and its major activity is immunoregulation. It has been implicated in the expression of CLASS II HISTOCOMPATIBILITY ANTIGENS in cells that do not normally produce them, leading to AUTOIMMUNE DISEASES.
The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments.

Mechanics of ventilation in swellsharks, Cephaloscyllium ventriosum (Scyliorhinidae). (1/238)

A simple two-pump model has served to describe the mechanics of ventilation in cartilaginous and bony fishes since the pioneering work of G. M. Hughes. A hallmark of this model is that water flow over the gills is continuous. Studies of feeding kinematics in the swellshark Cephaloscyllium ventriosum, however, suggested that a flow reversal occurred during prey capture and transport. Given that feeding is often considered to be simply an exaggeration of the kinematic events performed during respiration, I investigated whether flow reversals are potentially present during respiration. Pressure and impedance data were coupled with kinematic data from high-speed video footage and dye studies and used to infer patterns of water flow through the heads of respiring swellsharks. Swellsharks were implanted with pressure transducers to determine the pattern and magnitude of pressures generated within the buccal and parabranchial (gill) cavities during respiration. Pressure traces revealed extended periods of pressure reversal during the respiratory cycle. Further, impedance data suggested that pressures within the buccal and parabranchial cavities were not generated by the cyclic opening and closing of the jaws and gills in the manner previously suggested by Hughes. Thus, the classic model needs to be re-evaluated to determine its general applicability. Two alternative models for pressure patterns and their mechanism of generation during respiration are provided. The first depicts a double-reversal scenario common in the swellshark whereby pressures are reversed following both of the pump stages (the suction pump and the pressure pump) rather than after the pressure-pump stage only. The second model describes a scenario in which the suction pump is insufficient for generating a positive pressure differential across the gills; thus, a pressure reversal persists throughout this phase of respiration. Kinematic analysis based on high-speed video footage and dye studies, however, suggested that during respiration, as opposed to feeding, distinct flow reversals do not result from the pressure reversals. Thus, water is probably pooling around the gill filaments during the long periods of pressure reversal.  (+info)

Dominant frequency content of ocular microtremor from normal subjects. (2/238)

Ocular microtremor (OMT) is a high frequency tremor of the eyes present during fixation and probably related to brainstem activity (Coakley, D. (1983). Minute eye movement and brain stem function. CRC Press, FL.). Published observations on the frequency of OMT have varied widely. Ocular microtremor was recorded in 105 normal healthy subjects using the Piezoelectric strain gauge technique. The dominant frequency content of a signal was determined using the peak counting method. Values recorded ranged from 70 to 103 Hz, the mean frequency being 83.68 Hz (S.D. +/- 5.78 Hz).  (+info)

Automated measurement of oxygen consumption by the yellow fever mosquito, Aedes aegypti. (3/238)

Oxygen consumption of single mosquitoes was measured using a differential pressure transducer (DPT) connected to two small chambers. A mosquito was placed in the experimental chamber (P1) and was separated from NaOH by 4 cm2 of marquisette mesh. The reference chamber (P2) contained the same amount of NaOH and the marquisette mesh but without a mosquito. When these two chambers were sealed, removed O2 from P1 resulted in a pressure decrease with respect to P2. This pressure differential was transduced into an output voltage that was directly proportional to the amount of O2 consumed by the mosquito. An array of eight DPTs was interfaced with an IBM 486 PC using an ADAC 5500MF analog to digital converter and software from ADAC (Direct View) to automate the recording procedure. We determined that our apparatus was sensitive enough to detect subtle differences in O2 consumption in mosquitoes subjected to different physiologic conditions.  (+info)

Cheek and tongue pressures in the molar areas and the atmospheric pressure in the palatal vault in young adults. (4/238)

The pressures acting on the maxillary and mandibular posterior teeth from the tongue and cheeks were measured in 24 adults aged 22-29 years. In addition, the pressure in the palatal vault was recorded. The pressure at two maxillary (buccal and lingual) and two mandibular (buccal and lingual) measuring points, and in the palatal vault was recorded simultaneously. Repeated recordings of the pressures at rest, and during chewing and swallowing were made. The pressures at rest were of similar magnitude (about 2 g/cm2) at the buccal and lingual sides of the mandibular posterior teeth. The median resting pressure at the maxillary posterior teeth was 2.7 g/cm2 on the buccal side and 1.0 g/cm2 on the lingual side. The difference in the maxilla was significant, but not in the mandible. It was concluded that the equilibrium of tooth position is maintained by the pressure from the cheeks and the tongue. During chewing and swallowing the pressures on the lingual side of the teeth were greater than those on the buccal side. At rest about half of the subjects had a negative pressure at the palatal vault, but no correlations between the resting pressure at the palatal vault and the resting pressures on the teeth were found.  (+info)

An in vivo comparison of a catheter mounted pressure transducer system with conventional balloon catheters. (5/238)

In the assessment of respiratory muscle function balloon catheters have been widely used for pressure measurements. However, this type of investigation is poorly tolerated by acutely ill patients. This study assessed the performance of a possible alternative, a catheter-mounted miniature pressure transducer (CMT). The assessment consisted of a laboratory study of the linearity, frequency response, and stability of gain and baseline of the CMT system, and an in vivo study directly comparing the CMT and balloon catheter systems in seven normal subjects for a range of respiratory manoeuvres. These were: 1) maximal inspiratory and expiratory pressures against a closed airway, 2) twitch transdiaphragmatic pressure elicited by cervical magnetic phrenic nerve stimulation, and 3) tidal breathing, sniffs and coughs in five body positions. The agreement of the two systems was analysed for measurements of 1) absolute pressures, 2) magnitude of changes in pressure, and 3) rate of change of pressure (maximum relaxation rate after sniff manoeuvres). The CMT system was linear, with a high frequency response and stable gain, but showed baseline drift. The two systems agreed well for measurements of change and rate of change of pressure, but less well for measurements of absolute pressure. The CMT system tested is potentially useful for studies of acute changes in respiratory pressures, or studies of respiratory muscle strength, but would be less useful where accurate measurements of absolute pressures are required.  (+info)

Effect of co-activation of tongue protrudor and retractor muscles on tongue movements and pharyngeal airflow mechanics in the rat. (6/238)

1. The purpose of these experiments was to examine the mechanisms by which either co-activation or independent activation of tongue protrudor and retractor muscles influence upper airway flow mechanics. We studied the influence of selective hypoglossal (XIIth) nerve stimulation on tongue movements and flow mechanics in anaesthetized rats that were prepared with an isolated upper airway. In this preparation, both nasal and oral flow pathways are available. 2. Inspiratory flow limitation was achieved by rapidly lowering hypopharyngeal pressure (Php) with a vacuum pump, and the maximal rate of flow (VI,max) and the nasopharyngeal pressure associated with flow limitation (Pcrit) were measured. These experimental trials were repeated while nerve branches innervating tongue protrudor (genioglossus; medial XIIth nerve branch) and retractor (hyoglossus and styloglossus; lateral XIIth nerve branch) muscles were stimulated either simultaneously or independently at frequencies ranging from 20-100 Hz. Co-activating the protrudor and retractor muscles produced tongue retraction, whereas independently activating the genioglossus resulted in tongue protrusion. 3. Co-activation of tongue protrudor and retractor muscles increased VI, max (peak increase 44 %, P < 0.05), made Pcrit more negative (peak decrease of 44 %, P < 0.05), and did not change upstream nasopharyngeal resistance (Rn). Independent protrudor muscle stimulation increased VI,max (peak increase 61 %, P < 0.05), did not change Pcrit, and decreased Rn (peak decrease of 41 %, P < 0.05). Independent retractor muscle stimulation did not significantly alter flow mechanics. Changes in Pcrit and VI,max at all stimulation frequencies were significantly correlated during co-activation of protrudor and retractor muscles (r2 = 0.63, P < 0.05), but not during independent protrudor muscle stimulation (r2 = 0.09). 4. These findings indicate that either co-activation of protrudor and retractor muscles or independent activation of protrudor muscles can improve upper airway flow mechanics, although the underlying mechanisms are different. We suggest that co-activation decreases pharyngeal collapsibility but does not dilate the pharyngeal airway. In contrast, unopposed tongue protrusion dilates the oropharynx, but has a minimal effect on pharyngeal airway collapsibility.  (+info)

Time-dependent pressure distortion in a catheter-transducer system: correction by fast flush. (7/238)

BACKGROUND: Distortion of the pressure wave by a liquid-filled catheter-transducer system leads most often to an overestimation in systolic arterial blood pressure in pulmonary and systemic circulations. The pressure distortion depends on the catheter-transducer frequency response. Many monitoring systems use either mechanical or electronic filters to reduce this distortion. Such filters assume, however, that the catheter-transducer frequency response does not change over time. The current study aimed to study the changes with time of the catheter-transducer frequency response and design a flush procedure to reverse these changes back to baseline. METHODS: An in vitro setup was devised to assess the catheter-transducer frequency response in conditions approximating some of those met in a clinical environment (slow flushing, 37 degrees C, 48-h test). Several flush protocols were assessed. RESULTS: Within 48 h, catheter-transducer natural frequency decreased from 17.89 +/- 0.36 (mean +/- SD) to 7.35 +/- 0.25 Hz, and the catheter-transducer damping coefficient increased from 0.234 +/- 0.004 to 0.356 +/- 0.010. Slow and rapid flushing by the flush device built into the pressure transducer did not correct these changes, which were reversed only by manual fast flush of the transducer and of the catheter. These changes and parallel changes in catheter-transducer compliance may be explained by bubbles inside the catheter-transducer. CONCLUSIONS: Catheter-transducer-induced blood pressure distortion changes with time. This change may be reversed by a manual fast flush or "rocket flush" procedure, allowing a con. stant correction by a filter.  (+info)

Popliteal vein entrapment: a benign venographic feature or a pathologic entity? (8/238)

PURPOSE: Asymptomatic morphologic popliteal vein entrapment is frequently found in the healthy population (27%). In our institution, popliteal vein compression on plantar flexion was observed in 42% of all ascending venograms. Some authorities consider the lesion benign, without pathologic significance. This study examines the pathophysiologic importance in select patients, describes treatment with surgery, and suggests a diagnostic tool. METHOD: Thirty severely symptomatic patients with venographic evidence of popliteal entrapment were selected to have popliteal vein release after a process of elimination (ie, other causes of chronic venous insufficiency [CVI] were ruled out by means of comprehensive hemodynamic and morphologic studies). In the last nine limbs, popliteal vein pressure was also measured by means of the introduction of a 2F transducer tip catheter. Patients were clinically and hemodynamically assessed before and after surgery, and anatomical anomalies encountered during surgery were recorded. RESULTS: Popliteal vein release was performed without mortality or serious morbidity. Anomalies of the medial head of the gastrocnemius muscle caused entrapment in 60% of the patients; anatomic course venous anomalies were infrequent (7% of the patients). Significant relief of pain and swelling occurred in the patients who had surgery. Stasis ulceration/dermatitis resolved in 82% of patients. Popliteal venous pressures had normalized in the six patients who were studied postoperatively. CONCLUSION: Popliteal vein entrapment should be included in the differential diagnosis of CVI in patients in whom other, more common etiologies have been excluded on the basis of comprehensive investigations. Popliteal vein compression can be demonstrated venographically in a large proportion of patients with CVI, but the lesion is likely pathological only in a small fraction of these patients. A technique for popliteal venous pressure measurement is described; it shows promise as a test for functional assessment of entrapment. Immediate results of popliteal vein release surgery are encouraging; long-term follow-up is necessary to judge the efficacy of surgical lysis of entrapment in symptomatic patients who fail to improve with conservative treatment measures.  (+info)

Pressure transducers are transducers that convers pressure into an analog electrical signal. Pressure transducers are devices used to control pressure systems as for instance in air pressure installation. Besides, pressure transducers can be also used to control pressure in boilers and direct them by means of a control system. Pressure transducers can be connected to any control system due to their ability to emit a standard signal so customers can use pressure transducers for many different applications.
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It is common to refer to pressure transducers by their full-scale range in megapascals (1 MPa is 145 psi). The accuracy is 0.25% of the full scale of the pressure transducer. To obtain the highest quality data, the recommended minimum pressure is about 10 times the accuracy and the recommended maximum pressure is about 90% of the full-scale range. For example, if you select a 1,000 bar transducer, referred to as a 100 MPa transducer, the recommended minimum is 2.5 MPa (362 psi) (ten times the accuracy) and the recommended maximum is 90 MPa (13,050 psi) (90% of full-scale range).. Individual capillary rheometer pressure transducers have a limited range. For example, a 15 mm diameter barrel can only apply about 35.5 kN before it reaches the maximum of 200 MPa. Multiple transducers are often used to cover a wide variety of samples and tests.. ...
WO 97/02064 PCT/AU96/00413 -1- AUTO-CALIBRATION OF PRESSURE TRANSDUCER OFFSET Field of the Invention This invention relates to the auto-calibration of pressure transducers. In one preferred form, it relates to pressure transducers for use in apparatus for the provision of Continuous Positive Airway Pressure (CPAP) treatment to patients suffering from Obstructive Sleep Apnea (OSA) and for use in apparatus for ventilating assistance.. Background of the Invention CPAP is a well known treatment for the temporary relief of conditions including obstructive sleep apnea (OSA) and snoring. By this technique, air (or breathable gas) at a pressure elevated above atmospheric pressure is continuously supplied to the entrance of a patients airway (by the nasal and/or oral route) by means of known arrangements of masks or nasal prongs. The elevated air pressure acts as a pneumatic splint of the patients airway in the vicinity of the oro- and hypo-pharynx, reducing or eliminating the occurrences of apneas or ...
China Gas, Liquid Pressure Transducer and Switch for Pump, Compressor and Machine Tool System, Find details about China Pressure Transmitter, Pressure Switch from Gas, Liquid Pressure Transducer and Switch for Pump, Compressor and Machine Tool System - ANHUI WNK ELECTRONIC ENGINEERING CO., LTD.
An angioplasty pressure transducer includes a cylindrical member defining an inner cavity. The first end of the cylindrical member is provided with a fluid port allowing the passage of fluid into and out of the cylindrical member due to pressure changes in the physiological fluid being monitored. The angioplasty pressure transducer also includes a cylindrical elastomeric sleeve surrounding the cylindrical member. A cylindrical, transparent housing member is positioned about the cylindrical member such that a substantial portion of the outer surface of the cylindrical member, as well as the elastomeric sleeve, are enclosed and encased within the housing member. The cylindrical wall includes a plurality of small apertures spaced cylindrically about the circumference of cylindrical wall at a position substantially located at the longitudinal center of the cylindrical member, the apertures permitting pressurized fluid to pass between the inner cavity and the outer surface of the cylindrical member.
A novel fiber optic sensor that determines pressure from diaphragm curvature is discussed. This sensing technique exhibits a high degree of sensitivity and linearity and is less susceptible to environmental perturbations than previous intensity modulating techniques. Experimental results are presented for a pressure transducer operational in the 0-60 psi range, and a miniature pressure transducer operational in the 0-5 psi range designed for in vivo medical applications ...
This pressure transducer 0 to 5 volts amplified output calculator provides a way to determine the output reading from the applied pressure and pressure transducer range.
ACI ACI/DP2-3-20 Low Pressure Transducer. Buy the ACI ACI/DP2-3-20 Low Pressure Transducer from LaX Engineered Solutions, the leader in industrial oven parts.
An Air Suspension Pressure Transducer for your Jeep Wrangler JK, TJ, YJ, or Cherokee will give you tons more confidence on the trails. Free Shipping & L
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The Monnit Wireless Pressure Sensor is capable of measuring gas, liquid or vapor pressures from 0-160 PSI. This sensor can be used anywhere a pressure gauge can be used. Requires 12 - 32 VDC input. This solution combines a standard pressure transducer interfaced to a Monnit wireless radio. The Pressure Transducer is NEMA 4X, CE rated. User customization allows you to set notifications and alerts from the system so you can know immediately if pressure is above or below an optimal range ...
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EK-P3, the new evaluation kit from Sensirion, represents a straightforward and cost effective option for testing the digital differential pressure sensors of the SDP600 series. The set consists of a USB stick that is connected to the SDP610 sensor by an adapter cable. With the help of the software, which is available online for download, the differential pressure sensor can be tested under realistic conditions by following five simple installation steps. Consequently, there is no need to program a microprocessor as the evaluation kit maybe connected directly to a PC. The included software allows displaying measured values on the screen and additionally provides the option of exporting the data to an Excel spreadsheet. This enables the data to be saved and processed in a simple manner. The differential pressure sensors of the SDP600 family, which has recorded millions of sales, have a digital (I2C) output signal, are extremely long term stable and impress with their excellent accuracy and ...
Cx-PT-3351 Remote Flange Type Differential Pressure Sensor (CX-PT-3351), Find Details about Diaphragm Pressure Sensor, Diaphragm Pressure Transmitter from Cx-PT-3351 Remote Flange Type Differential Pressure Sensor (CX-PT-3351) - Shanghai Cixi Instrument Co., Ltd.
0032] An inverted cross-section of the biomedical interface pressure transducer 2 of this invention illustrating details of its construction is shown in FIG. 4. FIG. 5 shows an exploded view of the modified MEMS pressure sensor 14 of this invention. The sides of the conformable semisolid body 16 are curved between the top planar face 26 that is normally orientated towards the tissue and the bottom planar face 28 normally orientated towards the tourniquet in such a way as to present a gently contoured transition between the faces (FIGS. 3 and 4). A modified MEMS pressure sensor 14 is surface mounted onto a flexible substrate 20 such as Kapton® (DuPont) polyimide film with patterned conductor 22 tracks used commonly in the flexible circuitry industry. The conformable semisolid body 16 may be formed from polydimethyl siloxane (PDMS) (Dow Corning, Sylgard 184), or other such elastomer. The thickness extent of the conformable semisolid body 16 is such as to span the vertical extent of the modified ...
0018] As will be appreciated, the pressure sensors 12, 18 include various circuitry and other components to facilitate the functional aspects of the sensors. For example, the pressure sensors 12, 18 include telemetry components to facilitate communication between the sensors 12, 18 and the IMD 14 and/or the external device/system 16. In various embodiments, the pressure sensor 12 and/or the pressure sensor 18 may include a battery to supply operating power for the sensor components. In various other embodiments, the pressure sensor 12 and/or the pressure sensor 18 may be powered from an external source. For example, in one embodiment, the pressure sensor 12 and/or 18 includes an acoustic transducer configured to generate an output voltage in response to acoustic energy received from another device (e.g., the IMD 14 and/or the external device/system 16). As will be appreciated, the transducer output may then be utilized to charge one or more capacitors, which are discharged to provide operating ...
A pressure transducer comprising an elongate hollow outer housing having a pressure sensor diaphragm and externally positioned fixing means which facilitates pressure tight introduction of the diaphragm into a pressure sensing port provided in apparatus capable of generating pressures to be sensed, two elongate members positioned within the outer housing in operative association with the diaphragm so as to move differentially in a direction parallel with the longitudinal axis of the housing consequent upon movement of the diaphragm responsively to a pressure to be sensed, and transducer means responsive to differential movement between the elongate members for producing a signal in dependence upon the pressure sensed.
The ATS absolute 5000 PSI pressure sensor reads positive pressure to 5000 PSI while allowing negative pressure down to 14.69 Psi 29.92Hg to be read Note When picking a pressure transducer always pick the pressure closest to the peak pressures to be read The greater the sensing pressure the thicker the diaphragm will be. ...
Boston Millennia Partners is pleased to announce that St. Jude Medical (NYSE: STJ) is acquiring the remaining 81 percent of CardioMEMS, Inc. it does not own for $375 million dollars.. Dana Callow, Managing General Partner at Boston Millennia Partners, said, We congratulate the management team of CardioMEMS for the recent FDA approval of the companys remote heart monitoring device. We agree with the belief of many cardiology experts that the CardioMEMS HF System represents the most significant advancement in the treatment of congestive heart failure in the past twenty years. With the subsequently announced acquisition of CardioMEMS by St. Jude Medical, this device will receive broad distribution and improve the lives of patients worldwide.. The CardioMEMS HF System uses a miniaturized, wireless monitoring sensor that is implanted in the pulmonary artery (PA) during a minimally invasive procedure to directly measure PA pressure. Directly measuring PA pressure via a procedure called a right-heart ...
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Centurion Medical Products has expanded its Compass platform with the introduction of new digital pressure transducers to measure and monitor pleural
HTF Market Intelligence released a new research report of 92 pages on title Global Blood Pressure Transducers Market 2017-2021 with detailed analysis, f
Ashcrofts T2 compact, state-of-the-art pressure transducer has a static accuracy of +/-0.25%FS at 21°C; its digital temperature compensation ensures a total error band better than +/-1% between -20°C and +85°C.
A semiconductor pressure transducer assembly comprising a silicon diaphragm assembly and a glass covering member. The silicon diaphragm assembly has a circular diaphragm portion of thin silicon which is formed using etching, and a thick supporting portion therearound. Piezoresistive elements of a piezoresistive bridge circuit and conducting paths for electrically connection thereof are formed on the silicon diaphragm assembly. On a surface of the silicon diaphragm assembly, a passivating layer of silicon dioxide are formed in uniform thickness, and further on a surface of the passivating layer is formed a layer of polysilicon on the supporting portion of the silicon diaphragm assembly. In the passivating layer, a contacting window is formed, through which the polysilicon layer is electrically connected to the silicon diaphragm assembly. The covering member of borosilicate glass having a circular well is mounted and bonded onto the silicon diaphragm assembly in contact with the polysilicon layer using
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Honeywells PX3 Series, Heavy Duty Pressure Transducer is compatible with a variety of harsh media including brake fluid, refrigerants, engine oil, tap water, hydraulic fluids, and compressed air
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Pressure Transducer Market to Surpass Valuation of US$ 5.6 Bn by 2031, estimated to expand at a CAGR of ~3% during the forecast period
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The Model 1620 is a fully piezoresistive silicon pressure sensor for use in invasive blood pressure monitoring. The sensor is designed to be used with automated assembly equipment and can be dropped directly into a customers disposable blood pressure housing. The sensor is designed to meet the requirements as described in the Association for the Advancement of Medical Instrumentation (AAMI) specification for Blood Pressure Transducers. The pressure sensor consists of a pressure sensing element mounted on a ceramic substrate. Thick-film resistors on the ceramic substrate are laser-trimmed for compensation and calibration. A plastic cap is attached to the ceramic substrate to provide an easy method of attachment to the customers assembly and protection for the sensing element. A dielectric gel is placed over the sensor to provide electrical and fluid isolation. The Model 1620 pressure sensors are batch manufactured in a 10x12 element array on a ceramic substrate (120 units per substrate). The products
Using Ceramic Capacitive Sensing Technology, AMWEI Pressure Sensor Transducer can be used in oil, gas media, Optional for PWM or Voltage output, can be used in the pressure measurement of air compressor, air conditioner, engine, cooker steam, sanitary CO2, Low Pressure Differential Sensors, etc.
A method and apparatus for aspirating and dispensing a sample fluid. The apparatus includes an air source having an output port coupled to a first port of a flow through pressure transducer. A second port of the flow through pressure transducer is coupled to a first port of a sample probe. The flow through pressure transducer provides transducer signals to a detector circuit. In response to the transducer signals provided thereto, the detector detects the occurrence or non-occurrence of a plurality of different events.
The present invention relates to a pressure sensor module for use in catheters having a pressure sensor operable to provide a signal representative of pressure. The pressure sensor includes a sensing side and a pressure reference side. At least one signal transmission media is coupled to the sensor for transmitting the signal representative of pressure. A convex-shaped carrier is provided having a slot formed to expose the sensing side of the sensor. The convex-shaped carrier is adapted for receiving the sensor such that the sensing side of the sensor is adjacent the slot. A bonding material is provided for mounting the sensor to the carrier. The pressure sensing module provides ease of installation and manufacture because the module may easily be bonded and installed within a catheter.
A fuel pressure sensor diagnosing device for diagnosing a fuel pressure sensor for detecting pressure in a common rail in which a high-pressure fuel to be supplied to an engine is accumulated, the device comprising: fuel temperature detection means for detecting fuel temperature; and failure determination means, provided with the fuel temperature detection means for detecting fuel temperature via subsequent to stopping of the engine, for obtaining a resting and stabilization time between when the pressure in the common rail drops and when the pressure stabilizes on the basis of this detected fuel temperature, detecting a stabilized fuel pressure via the fuel pressure sensor subsequent to lapse of the resting and stabilization time, and determining a failure of the fuel pressure sensor when the detected stabilized fuel pressure exceeds a predetermined upper limit threshold value or is less than a predetermined lower limit threshold value.
A pressure sensor that is mounted on an intake tube of an internal combustion engine which prevents icing of the pressure connection. The pressure sensor of the invention has a stublike pressure connection, which extends from an inner wall of an intake tube to approximately the middle of the intake tube or beyond the middle, and as a result the risk of icing of the pressure sensor is considerably reduced. A pressure sensor is intended especially for mixture-compressing internal combustion engines with externally supplied ignition.
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The present invention is an apparatus for treating a selected patient tissue or organ region, at the surface of such region. The apparatus has an accessing tool for accessing the patient region, the tool having a distal end, and a proximal end at which the tool can be manipulated to place the distal end adjacent to the patient region. The apparatus also has a probe carried on the distal end and defining a contact surface that may be urged against the patient region thereby creating contact pressure. A pressure transducer is operatively coupled to the probe and is capable of producing a measurable response to the contact pressure. A monitoring device is operatively connected to the pressure transducer, for determining the contact pressure. An effector is operatively disposed on the probe for producing a given effect on the patient region when the effector is activated, and an activator operatively connected to the effector, by which the effector can be activated.
Over-the-counter intra-vaginal lactic-acid containing douches are marketed as vaginal hygiene products that support optimal vaginal pH balance. We report the effect of a commercially available douche (Etos®) on the vaginal microbiota (VM) in a prospective study. Twenty-five healthy women were recruited through advertisements in 2015-2017 (ethical approval: METC-2014_413) and followed over three menstrual cycles. The participants had a median age of 24 years [IQR: 22-29], were mostly Dutch-Caucasian (88%), and 60% used combined oral contraceptives. All participants douched three times a week during the second cycle, starting on the first day of that cycle. Participants completed a questionnaire at baseline, kept a daily diary to report douching, menses, and sexual activity, self-collected vaginal swabs every other day during the first and third cycle and daily during the second cycle, and measured vaginal pH mid-cycle. A median of 44 vaginal swabs [inter-quartile range (IQR): 41-50] were assessed per
This Tissue Bath has been designed for the studying of perfused tubular organs such as trachea, blood vessels, intestines and vas deferens. Individual solutions can be used for intraluminal perfusion and extraluminal superfusion. Two roller pumps are needed, one for intraluminal constant flow perfusion and the second for extraluminal superfusion. The effective intraluminal perfusion is generated by an adjustable afterload control system. A differential pressure transducer is used to measure the intraluminal pressure difference at the proximal and distal end of the organ.
The subjects wore a nasal mask (Respironics Inc, Murrayville, Pennsylvania, USA) connected to a heated pneumotachometer (Hans Rudolph Inc, Kansas City, Missouri, USA) and a differential pressure transducer (Validyne Corp, Northbridge, California, USA) calibrated with a rotameter for measurement of airflow. Inspiratory (Ti) and expiratory (Te) times were determined from this signal and it was electronically integrated for calculation of tidal volume (Vt). Minute ventilation (VE) was calculated as the sum of all Vt per minute. The duty cycle (Ti/Ttot) was also calculated for each breath. End-tidal carbon dioxide tension (Petco2) was measured from expired air within the nostril using a calibrated infrared CO2 analyser (Capnograph/Oximeter Monitor, BCI, Waukesha, Wisconsin, USA) while arterial oxygen saturation (Sao2) was measured using a pulse oximeter probe attached to the index finger (Capnograph/Oximeter Monitor). Pressure was monitored in the mask with an open catheter attached to a pressure ...
Experiments were performed on littermate control (Kv1.1+/+), heterozygous (Kv1.1+/-), and null (Kv1.1-/-) mice. Breeding pairs were purchased from The Jackson Laboratory (Bar Harbor, ME), and offspring were genotyped as previously described (Zhou et al., 1998). All of the experimental protocols were in compliance with the Case Western Reserve University Institutional Animal Care and Use Committee guidelines.. Measurement of respiratory variables. In unanesthetized animals, respiration was monitored by whole-body plethysmography as previously described (Kline et al., 2002a). Briefly, animals were placed in a 600 ml Lucite chamber that contained an inlet port for gas administration and an outlet port for airflow and gas sampling. The chamber was connected to a high-gain differential pressure transducer (Valydine MP45; Validyne, North Ridge, CA). As the animal breathed, changes in pressure were converted to signals representing tidal volume (VT), which were amplified (BMA 830; CWE, Ardmore, PA), ...
Halcyon pneumotach cancels out noise by ensuring both sensing ports on the differential pressure transducer measure the same pressure from an atmospheric event.
... high pressure condition at the driver cone surface to a large diameter, low pressure condition at the mouth of the horn. This ... Such transducers can cover a wide frequency range (80 Hz to 35,000 Hz) and have been promoted as being close to an ideal point ... Sensitivity - The sound pressure level produced by a loudspeaker in a non-reverberant environment, often specified in dB and ... Maximum sound pressure level - The highest output the loudspeaker can manage, short of damage or not exceeding a particular ...
Transducers for foot pressure measurement: survey of recent developments. Med Biol Eng Comput 33 525-32. Rosenbaum D, Becker HP ... Foot pressure measurement: a review of methodology. J Biomed Eng 3 91-9. Gefen A 2007. Pressure-sensing devices for assessment ... Plantar pressure assessment. Phys Ther 80 399-409. Birtane M, Tuna H 2004. The evaluation of plantar pressure distribution in ... Plantar pressure distribution measurements: technical background and clinical applications. J Foot Ankle Surg 3 1-14. Orlin MN ...
ISBN 978-3-540-92840-9. Cobb J, Claremont DJ (July 1995). "Transducers for foot pressure measurement: survey of recent ... The most commonly analyzed pedobarographic variable is 'peak pressure', or the maximum pressure experienced at each sensor (or ... Other variables like contact duration, pressure-time integral, center of pressure trajectory, for example, are also relevant to ... Prabhu KG, Patil KM, Srinivasan S (May 2001). "Diabetic feet at risk: a new method of analysis of walking foot pressure images ...
ambient pressure transducer pressure sensor Component that converts ambient pressure to an electrical signal Piezoresistive ... The computer is either connected to the first stage by a high pressure hose, or has two parts - the pressure transducer on the ... Some dive computers can receive a signal from more that one remote pressure transducer. The Ratio iX3M Tech and others can ... analog-to-digital converter Component that converts the voltage output from the pressure transducer to binary signal that can ...
Transducers of this form also lend themselves to compensation against the hydrostatic pressures encountered in sonar, ... To maximize efficiency, transducers are often placed in arrays: a grid of sometimes hundreds of transducers. This arrangement ... "Electroacoustic transducer for use under water and comprising a system for automatically compensating the hydrostatic pressure ... The term tonpilz or "acoustic mushroom" may refer to a certain type of underwater electro-acoustic transducer. By sandwiching ...
Optional dedicated pressure transducers facilitate continuous, long-term pressure monitoring. Water FLUTe systems are described ... The multi-screened well casing can then be decommissioned using standard methods such as pressure grouting or by drilling out ... Then, the multi-screened wells can be pressure-grouted or drilled out using standard well decommissioning procedures. The ... The various monitoring ports can be connected to a combination of: sampling pumps, transducers, or polyethylene tubes that ...
The MA series of acoustic hailing devices consist of a hexagonal array of transducers. As the number of transducers increases, ... The current models are detailed below with their maximum sound pressure level.[citation needed] TCPA-Omni 140 db MA-1 138 dB MA ... The current models offered are detailed below with their maximum sound pressure level.[citation needed] HyperShield 140 dB HS- ... Acoustic Hailing Device Sound pressure Acoustics Loudspeaker Frequency Response Curve on 2nd Page News Release for Teaming ...
The pressure transducers measured the effects of various weapons loads and external fuel tanks. In 2002 the aircraft undertook ... In 2000 the aircraft was covered with 490 pressure transducers; due to the fact that they were covered by black pads and had ...
A load cell is a force transducer. It converts a force such as tension, compression, pressure, or torque into an electrical ... This pressure is then transmitted to a hydraulic pressure gauge via a high pressure hose. The gauge's Bourdon tube senses the ... A pressure gauge is attached with the load cell to measure the pressure inside the cell. The deflection of the diaphragm ... The Load cell is designed to automatically regulate the balancing pressure. Air pressure is applied to one end of the diaphragm ...
... filter and pressure transducer on upper side. Closed circuit with high pressure supply to rotor and gearbox bearings. Maximum ... oil lubrication and temperature and pressure transducers. TRS 18-056 Cut down gas generator or core engine version, fuel ...
Ultrasonication generates alternating low-pressure and high-pressure waves in liquids, leading to the formation and violent ... When the UIT tool, made up of the ultrasonic transducer, pins and other components, comes into contact with the work piece it ... The ultrasonic pressure waves nebulize not only the water but also materials in the water including calcium, other minerals, ... The piezoelectric effect, discovered by Jacques and Pierre Curie in 1880, was useful in transducers to generate and detect ...
They were not very reliable, so other transducers were experimented with. Dynamic microphones were also discarded. At the end ... The quartz crystals generate electric voltage depending on the pressure acting on it. In collaboration with the Imperial German ... Navy, Atlas Werke AG in Bremen and Electroacustik (ELAC) in Kiel worked on piezoelectric transducers and the development of ...
The load cell is submerged and in direct contact with the upped pressure head of the specimen. Deformation transducers are ... Pressure in the third direction can be applied using hydrostatic pressure in the test chamber, requiring only 4 stress ... The distance that the upper platen travels is measured as a function of the force required to move it, as the pressure of the ... The stress on the platen is then reduced and the water pressure pushes the sides back in, causing the sample to grow taller ...
Thus, the pressure transducer and thermocouple will detect this diminished airflow and the respiratory event may be falsely ... Nasal and oral airflow can be measured using pressure transducers, and/or a thermocouple, fitted in or near the nostrils; the ... pressure transducer is considered the more sensitive.[citation needed] This allows the clinician/researcher to measure the rate ... This is the same as a "PSG" but with the addition of the mask applied so the technician can increase the airway pressure inside ...
Temperature and pressure must be specified for both the sample and the reference. Pressure is nearly always 1 atm (101.325 kPa ... Buoyant Force Transducer: the buoyancy force produced by a float in a homogeneous liquid is equal to the weight of the liquid ... Hydrostatic Pressure-based Instruments: This technology relies upon Pascal's Principle which states that the pressure ... "Managed Pressure Drilling. Retrieved July 10, 2019 - via sciencedirect.com.. *^ Density - VEGA Americas, Inc. Ohmartvega.com. ...
It can also be applied as a means to diagnose and monitor intracranial pressure, for example as incorporated into continuous ... It may use microphones, accelerometers, and multifrequency ultrasonic transducers. It does not use any radiation and is ... motion in the brain tissue as well as cerebrospinal fluid and therefore produces minimal changes in intracranial pressure. ...
Bull plugs, pressure transducers and valves are found on the rig standpipe. v t e. ...
"Max Chamber Pressure - SAAMI Specs". www.LASC.us. Retrieved June 27, 2017. "Velocity and Piezoelectric Transducer Pressure: ... Pressures for the 400 are in the 23,000 PSI range." The difference between SAAMI maximum average pressure is only 2,500 psi and ... although one source states that the pressure is 26,500 psi), much closer to the SAAMI maximum pressures for .45 ACP (21,000 psi ... Setback of the bullet in the case-which can cause excessive pressure-can be avoided by using a tight roll crimp and, if ...
Almost 100 data channels were recorded from acceleration, displacement, strain, and pressure transducers. UWM researchers will ...
This pressure rise propagates through the tissue and is sensed via ultrasonic transducers. Due to the proportionality between ... This transducer array acts like a band-pass filter in the frequency domain, attenuating both high and low frequencies within ... the optical absorption, the rise in temperature, and the rise in pressure, the ultrasound pressure wave signal can be used to ... "Reconstruction of initial pressure from limited view photoacoustic images using deep learning". Photons Plus Ultrasound: ...
Strain transducers are used in Bridge WIM systems. Strain gauges are used to measure the flexure in bending plates and the ... The majority of systems today are strip sensors - pressure sensitive materials installed in a 2 to 3 cm groove cut into the ...
Typical electro-mechanical sensors used in mechatronics are strain gauges, thermocouples, and pressure transducers. At the ... 2011) "Development of Low Pressure Filter Testing Vessel and Analysis of Electrospun Nanofiber Membranes for Water Treatment" ...
The fetal heart rate and the activity of the uterine muscle are detected by two transducers placed on the mother's abdomen, ... With an IUPC, this is determined by assessing actual pressures as graphed on the paper. Interval: the amount of time between ... The absolute values of pressure readings on an external tocometer are dependent on position and are not sensitive in people who ... To gauge the strength of contractions, a small catheter (called an intrauterine pressure catheter or IUPC) is passed into the ...
These systems incorporate flowmeters, pressure transducers and temperature sensors to closely monitor the simulated conditions ... Different variations can include other parameters to increase the veracity of these models, such as flow, pressure, compliance ...
In early sonar transducers during World War II, nickel was used as a magnetostrictive material. To alleviate the shortage of ... This can be done by magnetic annealing, magnetic field assisted compaction, or reaction under uniaxial pressure. This last ... "Uniaxial anisotropy and enhanced magnetostriction of CoFe 2 O 4 induced by reaction under uniaxial pressure with SPS". Journal ...
The pressure gauges (transducer) can be vibrating-wire, pneumatic, or strain-gauge in operation, converting pressure into an ... Electrical pressure transducers of several types can be read automatically, making data acquisition more convenient. The first ... A piezometer is either a device used to measure liquid pressure in a system by measuring the height to which a column of the ... A piezometer is designed to measure static pressures, and thus differs from a pitot tube by not being pointed into the fluid ...
Most aviation weather stations use two (required for an AWOS) or three independent pressure transducers. The transducers may or ... Should the reported pressures differ by more than a preset maximum, the pressure values are discarded and altimeter setting is ... The measurement is based on the time it takes for an ultrasonic pulse to travel from one transducer to another, which varies ... The transit time is measured in both directions for several (usually two or three) pairs of the transducer heads. Based on ...
Smaller volumes of haze can also be generated from aerosol canisters containing mineral oil under pressure. Although to the ... Ultrasonic haze machines use transducers submerged in a reservoir of fluid to create atmospheric effects. Although less common ...
... or pressure. The physical variable is converted to an analog signal by a transducer. For example, in sound recording, ... Since a sound is a vibration of a medium (such as air), a sound signal associates a pressure value to every value of time and ... The embodiment of a signal in electrical form is made by a transducer that converts the signal from its original form to a ... For example, in an analog audio signal, the instantaneous voltage of the signal varies continuously with the sound pressure. It ...
The reported sensitivity is 820 Vrms/T with a resolution 200 nT at the pressure level of 1mbar. ... Tabrizian, R. (2016) Damped Oscillation of Microstructures and Lumped Element Modeling and Transducers (pdf slides) Retrieved ... or high pressure oil or gas pipelines. When a magnet (generally an electromagnet creating a varying frequency field) creates ... such as mechanical damping of resonator itself or damping from outside pressure and temperature. [2] ...
When estimating static lung compliance, volume measurements by the spirometer needs to be complemented by pressure transducers ... Maximal inspiratory pressure (MIP) MIP, also known as negative inspiratory force (NIF), is the maximum pressure that can be ... This measurement also requires pressure transducers in addition. It is considered normal if it is 60% to 140% of the average ... pressure measured at the airway opening (PaO) during an occlusion at end-inspiration and positive end-expiratory pressure (PEEP ...
The operation has to be performed at low pressure, as the stability of atomic hydrogen at atmospheric pressure is insufficient ... Ultrasound can be used for assisting tinning and soldering; an ultrasonic transducer can be mounted on the soldering iron, in a ... At lower temperatures the reaction speed is too slow for practical applications.) Very low partial pressures of oxygen and ...
Jaime Andrés Pérez Taborda; J.C. Caicedo; M. Grisales; W. Saldarriaga; H. Riascos (2015). "Deposition pressure effect on ... Aluminium nitride is also used to build piezoelectric micromachined ultrasound transducers, which emit and receive ultrasound ...
The pressure differential is typically measured using diaphragm pressure transducers with digital readout. Since these meters ... Multi-hole pressure probe[edit]. See also: Annubar. Multi-hole pressure probes (also called impact probes) extend the theory of ... A Venturi meter constricts the flow in some fashion, and pressure sensors measure the differential pressure before and within ... and the distance between receiving and transmitting transducers L. {\displaystyle L}. and the inclination angle α. {\ ...
Ease of operating transducers in linear mode.. Optical fibers are more difficult and expensive to splice than electrical ... and as sensors to measure pressure and temperature. ...
D.V.S. Muthu, A.E. Midgley, E.A. Petruska, A.K. Sood, Y. Bando, D. Golberg and M.B. Kruger : «High-pressure effects on boron ... BCN nanotubes as highly sensitive torsional electromechanical transducers» Nano Lett. 14[11] (2014) 6132-6137 DOI:10.1021/ ... S. Li, S. Wang, T. Daiming, W. Zhao, H.L. Xu, L. Chu, Y. Bando, D. Golberg, G. Eda : «Halide-Assisted Atmospheric Pressure ... S SAHA, D MUTHU, D GOLBERG, C TANG, C ZHI, Y BANDO and A SOOD : «Comparative high pressure Raman study of boron nitride ...
Their original formulations usually do not specify locations for the transducer's placement, and do not address how the ... At the pressure balance point, where pressure in the cuff equals systolic artery pressure, a 'whooshing' noise can be heard as ... At this pressure balance point, the applied external pressure (Pe) equals to the intracranial pressure (ICP). ... Direct comparison of arterial blood pressure (ABP) and externally applied pressure is the basic arterial blood pressure ...
... the controllers have breath-operated pressure transducers, and may have gate extractors, velocity sensors, and bite sensors. ... The controllers were initially implemented as a multidimensional pressure keyboard in 1945, then changed to a group of ... finger pressure), and was also later utilized by Robert Moog.[88][89][90] The ribbon controller has no moving parts. Instead, a ...
Tire-pressure monitoring system. *Torque sensor. *Transmission fluid temperature sensor. *Turbine speed sensor ... Transducer. *Ultrasonic sensor. *Video sensor technology. *Visual sensor network. *Wheatstone bridge. *Wireless sensor network ...
... though this article particularly treats visualization of the pressure field produced by ultrasonic transducers, generally in ... due to defects in transducer) and on-line identification of time-dependent phenomena [2] (e.g. in phased array transducers). ... the three-dimensional pressure field.[4] The schlieren technique converts the phase information into an intensity image, ... The acousto-optic effect couples the optical refractive index of the medium with its density and pressure. Thus, spatial and ...
The hydrostatic pressure balances the capillary pressure, which is shown below: p. −. p. 0. −. (. ρ. 2. −. ρ. 1. ). g. z. =. γ ... Using acoustical transducers and related instrumentation that set low limits (0-50,000 Hz with roll-off) causes errors. The low ... Finally, the difference in the top and bottom pressure equal the change in hydrostatic pressure: (. ρ. 2. −. ρ. 1. ). g. z. =. ... The capillary pressure Pc is given by the equation of: P. c. =. γ. (. 1. R. 1. +. 1. R. 2. ). {\displaystyle P_{c}=\gamma \left ...
To better simulate pipe organs, some digital organs emulate changes of windchest pressure caused by the air pressure dropping ... which excite transducers that generate electrical signals of various frequencies that are mixed and fed through an amplifier to ...
Pressure-sensitive tape, adhesive tape that will stick with application pressure, without the need for solvent, heat, or water ... Tape head, a type of transducer used in tape recorders to convert electrical signals to magnetic fluctuations and vice versa ... Masking tape or sticky tape, a type of pressure-sensitive tape made of a thin and easy-to-tear paper, and an easily released ... Surgical tape or medical tape, a form of pressure-sensitive adhesive tape used in medicine and first aid as a bandage to hold a ...
Thus, the pressure transducer and thermocouple will detect this diminished airflow and the respiratory event may be falsely ... Nasal and oral airflow can be measured using pressure transducers, and/or a thermocouple, fitted in or near the nostrils; the ... and sequentially titrated to a final pressure of 17 cm H2O. At this pressure his AHI was 4 events/hr. and the low SaO2 had ... pressure transducer is considered the more sensitive.[citation needed] This allows the clinician/researcher to measure the rate ...
Silicon pressure sensors e.g., car tire pressure sensors, and disposable blood pressure sensors ... Micromachined ultrasound transducers.[31][32]. Industry structure[edit]. The global market for micro-electromechanical systems ... TRANSDUCERS '05. 2. IEEE. pp. 1118-1121. doi:10.1109/SENSOR.2005.1497272. ISBN 9780780389946. .. ... Devices including optical frequency combs [22], and silicaon MEMS pressure sensors [23], have been produced through the use of ...
implanted high-speed pressure transducers into the brain of pigs and demonstrated that a significant pressure wave reaches the ... Actually, three different types of pressure change appear: (1) shock wave pressures or sharp, high pressure pulses, formed when ... Physics of ballistic pressure wavesEdit. World War II era ballistic pressure wave measurement. Peak is 600 psi (4,100 kPa), ... Inferences from blast pressure wave observationsEdit. Ballistic pressure waves believed to be the mechanism of hydrostatic ...
... s cannot be compressed with little pressure whereas gases can be compressed with little pressure because in gases ... and acousto-optic sensors and/or transducers. ... under high pressures. To be classified as a true mineral, a ...
Tire-pressure monitoring system. *Torque sensor. *Transmission fluid temperature sensor. *Turbine speed sensor ... Transducer. *Ultrasonic sensor. *Video sensor technology. *Visual sensor network. *Wheatstone bridge. *Wireless sensor network ...
signal transducer activity. • G-protein coupled receptor activity. • leukotriene receptor activity. • cysteinyl leukotriene ... vascular expression of human cysteinyl leukotriene 2 receptor modulates endothelial permeability and systemic blood pressure". ...
In short, senses are transducers from the physical world to the realm of the mind where we interpret the information, creating ... Mechanoreceptors are sensory receptors which respond to mechanical forces, such as pressure or distortion.[11] While ... Mechanical nociceptors respond to excess pressure or mechanical deformation.. *Chemical nociceptors respond to a wide variety ... and S1 that experiences the sensations labelled as touch or pressure, temperature (warm or cold), pain (including itch and ...
A transducer may be swept mechanically by rotating or swinging. Or a 1D phased array transducer may be used to sweep the beam ... Ultrasound produces heating, pressure changes and mechanical disturbances in tissue. Diagnostic levels of ultrasound can ... Some of the reflections return to the transducer. Receiving the echoesEdit. The return of the sound wave to the transducer ... The sound is focused either by the shape of the transducer, a lens in front of the transducer, or a complex set of control ...
Children's respiration during sleep should be monitored with nasal cannula/pressure transducer system and/or esophageal ...
signal transducer activity. • mineralocorticoid receptor activity. • steroid binding. • G-protein coupled receptor activity. • ... GPER is expressed in the blood vessel endothelium and is responsible for vasodilation and as a result, blood pressure lowering ... which also controls blood pressure,[26][27] and is required for superoxide-mediated cardiovascular function and aging.[28] ... Increases Blood Pressure, and Eliminates Estradiol-stimulated Insulin Release in Female Mice". Endocrinology. 150 (2): 687-98. ...
signal transducer activity. • protein binding. Cellular component. • cytoplasm. • integral component of membrane. • membrane. • ... positive regulation of blood pressure. • signal transduction. • positive regulation of uterine smooth muscle contraction. • ...
There are several companies that offer alternatives to paint-based antifouling, using ultrasonic transducers mounted in or ... and other high contamination risk areas have negative pressure (constant exhaust) in the rooms, maintain strict cleaning ...
Blood pressure can be monitored either invasively through an inserted blood pressure transducer assembly (providing continuous ... The ideal blood pressure in the brachial artery, where standard blood pressure cuffs measure pressure, is ,120/80 mmHg. Other ... Since pressure is a function of force per unit area, (P = F/A), the larger the surface area, the lesser the pressure when an ... Blood pressure[edit]. The blood pressure in the circulation is principally due to the pumping action of the heart.[23] The ...
... and pressure and temperature change simultaneously; when pressure reaches a maximum or minimum, so does the temperature. ... The electro-acoustic transducer, e.g. a loudspeaker, is not shown.. Thermoacoustic engines (sometimes called "TA engines") are ... Isobaric heat transfer. The parcel's higher temperature causes it to transfer heat to the plate at constant pressure, cooling ... Further experiments showed that cooling the air at its points of minimal pressure produced a similar amplifying effect.[2] A ...
APGs PT-400 amplified output pressure transducers cover pressures from 0 to 20,000psi, high-burst pressure to 3x full scale ... APGs PT-400 amplified output pressure transducers cover pressures from 0 to 20,000psi, high-burst pressure to 3x full scale ... Suitable for static and dynamic pressure measurement where an amplified output signal is desired, the transducers are cCSAus- ... The transducers weigh 10 oz. and offer standard 4-20mA, 0-5 VDC and 0-10 VDC outputs. Their integrated electronics are fully ...
... pressure tight introduction of the diaphragm into a pressure sensing port provided in apparatus capable of generating pressures ... and transducer means responsive to differential movement between the elongate members for producing a signal in dependence upon ... A pressure transducer comprising an elongate hollow outer housing having a pressure sensor diaphragm and externally positioned ... parallel with the longitudinal axis of the housing consequent upon movement of the diaphragm responsively to a pressure to be ...
Viatran announced the availability of their new Model 511 Hammer Union Pressure Transducer. This design has addressed the needs ...
Disposable Pressure Transducer with Transpac IV Connector, Wings, 1-Way Stopcock and Male-Male Luer Lock Connection, 48" Cable ... Disposable Pressure Transducer with Transpac IV Connector, Wings, 3-Way and 1-Way Stopcocks and Male-Female Luer Lock ... Disposable Pressure Transducer with Transpac IV Connector, Wings, 3-Way Stopcock, Male-Female Luer Lock Connection and 3 mL / ... Disposable Pressure Transducer with Transpac IV Connector, Wings, 1-Way Stopcock and Male-Female Luer Lock Connection, 48" ...
Manufacturers of diesel engines and systems are increasing being pressured to offer more efficient fuel delivery systems with ... The use of pressure transducers in closed loop with an Engine Control Unit (ECU), is on the increase to help achieve the goals ... Packaging Very High Pressure Transducers for Common Rail Diesel Injection Systems 982020. ... Citation: Sidhu, K., "Packaging Very High Pressure Transducers for Common Rail Diesel Injection Systems," SAE Technical Paper ...
Order Kavlico Pressure Sensors P1K-5-2X16PA (1861-1023-ND) at DigiKey. Check stock and pricing, view product specifications, ... Product Index , Sensors, Transducers , Pressure Sensors, Transducers , Kavlico Pressure Sensors P1K-5-2X16PA ... Pressure Sensor 0.18 PSI (1.25 kPa) 0.25 V ~ 4 V 8-DIP Module ... Operating Pressure 0.18 PSI (1.25 kPa) Output Type Analog ...
Research and development of indwelling pressure transducer, explaining the principles of pressure transducer, biomedical ... Research and Development of Indwelling Pressure Transducers Section 5: Future Directions for Implantable Pressure Transducers ... Needs and Potential Application of Indwelling Pressure Transducers Section 2: Present Applications of Indwelling Pressure ... And then they move onto future directions for implant pressure transducers and the users point of view. This book covers a wide ...
... high-performance manifold absolute pressure sensor for the automotive industry. The sensor uses a pressure-dependent sealed ... Quartz Capsule Pressure Transducer for the Automotive Industry 810374. This paper describes a low-cost, high-performance ... Citation: Lee, C. and Pfeifer, J., "Quartz Capsule Pressure Transducer for the Automotive Industry," SAE Technical Paper 810374 ... The sensor uses a pressure-dependent sealed capacitor element constructed from fused quartz plates, and circuit detection ...
Buy pressure transducer products and get the best deals at the lowest prices on eBay! Great Savings & Free Delivery / ... 1/8NPT Pressure Transducer Sender Sensor For Oil Fuel Gas Air Water 5 PSI UK. £9.53 ... 1/8" NPT Pressure Transducer Sender Sensor for Oil Fuel Diesel Gas Air Water NEW. £16.28 ... 1/8" NPT Pressure Transducer Sender Sensor for Oil Fuel Diesel Gas Air Water UK. £15.59 ...
In Phase I we will fabricate a prototype pressure transducer. In Phase II we will optimize the transducer design and integrate ... Measurement of the pressure in each cylinder permits enhanced control of engine operation which results in decreased exhaust ... developed a novel surface SiC micromachining technology applicable to the manufacture of a cost-effective in-cylinder pressure ...
Buy Cole-Parmer Barometric Pressure Transducers and more from our comprehensive selection of Pressure Transducers from Cole- ... Low-cost barometric pressure transducers are designed for use in environmental applications that require excellent accuracy, ...
... state-of-the-art pressure transducer has a static accuracy of +/-0.25%FS at 21°C; its digital temperature compensation ensures ... Digital pressure transducer. Submersible pressure transducer Pressure transducer/switch. Compact pressure transducer. ... vibration and extreme pressure cycling. Available in ranges from vacuum through 0/20,000psi, the pressure transducer can be ... Ashcrofts T2 compact, state-of-the-art pressure transducer has a static accuracy of +/-0.25%FS at 21°C; its digital ...
if you have vaccum and that line is clear, take the hose that goes to the egr vsv solenoid off the transducer and rev the ... make sure that the metal line that connects to the bottom of the transducer is not clogged with carbon. ... if it is good you will have vaccum through the transducer, if its bad no vaccum will be there. ,() ... make sure you have vaccum to the transducer, i believe there will be 2 hoses coming from the throttle body. ...
The angioplasty pressure transducer also includes a cylindrical elastomeric sleeve surrounding the cylindrical member. A ... member is provided with a fluid port allowing the passage of fluid into and out of the cylindrical member due to pressure ... An angioplasty pressure transducer includes a cylindrical member defining an inner cavity. The first end of the cylindrical ... an angioplasty pressure transducer 10 is disclosed. The angioplasty pressure transducer 10 is designed to detect whether or not ...
The pressure switch inlcudes a transducer in the form of an ink layer ... The pressure transducer includes a layer formed of a force-sensitive resistant (FSR) transducer ink, for example, as ... As is obvious, the pressure exerted on FSR transducer 26 by these opposing surfaces is substantially equal to the pressure ... 13, another embodiment of a pressure-sensitive transducer in accordance with the invention is shown. The transducer includes a ...
PTN Analog Pressure Transducer. The PTN Analog Pressure Transducer Series features a stainless-steel housing and completely ... Pressure Transducer, 1/4 NPT Port, 0 - 500 PSI rated pressure, Voltage 0 to 5 VDC output, M12 connector. Item:. ... Pressure Transducer, 1/4 NPT Port, 0 - 250 PSI rated pressure, Voltage 0 to 5 VDC output, M12 connector. Item:. ... Pressure Transducer, 1/4 NPT Port, 0 - 100 PSI rated pressure, Voltage 0 to 5 VDC output, M12 connector. Item:. ...
TC-08 & pressure transducers. Post any questions you may have about our current range of USB data loggers. ... What is the least expensive/easiest method to log water pressure using a TC-08? The pressure is in the range of +/- 5 psi and ... The simplest method would be to use the Single Channel Terminal Board and a 4 to 20mA pressure sensor that fits with your ... What was the result of this inquiry? Can either of you post some basic details about the solution to measure pressure with the ...
... Not All Pressure Transducers Are Created Equal Often the cost of diagnosing and servicing a control ... system because of a failed transducer is many times the cost of the transducer. I have quoted transducers and lost the business ... The cable to transducer seal is also very important. It is easy to make a seal that last for a few months but quite a different ... This is most often due to poor quality cable jackets and/or seals to the transducer. We wont sell the SO cable jackets as a ...
... recently introduced the M5100 and U5100 Pressure Transducers designed for use in industrial applications that require ... Measurement Specialties (MEAS) recently introduced the M5100 and U5100 Pressure Transducers designed for use in industrial ... Typical applications for the M5100 and U5100 Pressure Transducers include process control, utilities, hydraulic and pneumatic ... recommended for high pressure, high cycle count applications. The U5100 features Measurement Specialties ultrastable MEMS die ...
Get the latest pressure transducer news on Environmental XPRT, the worlds largest environmental industry marketplace and ... pressure transducer News. Related terms for "pressure transducer ": submersible pressure transducer news ... Pressure transmitters and pressure transducers` The product overview "Pressure transmitters and pressure transducers" displays ... Fairchild I/P transducers deliver high accuracy at very low pressures Precise pressure control, where output pressures must be ...
The AST4200 panel-mount pressure transducer is designed to provide data for safety, control, and alarm functions as found on ... Panel-Mountable Pressure Transducer. The AST4200 panel-mount pressure transducer is designed to provide data for safety, ... Sensor output is 10 mV/V, 4 to 20 mA, or 1 to 5 V. The AST4200 provides gage, sealed gage, and compound-gage pressure ... and fluid-filled cavities for high-proof and burst-pressure uses. It mounts through the panel to keep hazardous media out. A ...
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A capacitance transducer has a central chamber with a conductive diaphragm disposed therein to separate the chamber into at ... which in combination with the conductive diaphragm enclose a substantially incompressible fluid such that when pressure is ... A transducer which preferably is used for differential pressure, gauge pressure, flow, level or other such pressure measurement ... 1. An improved capacitive pressure transducer having a transducer housing,. a sensor housing disposed in the transducer housing ...
... fan static pressure, duct air flow, building pressurization, and filter monitoring ... New from this company are its Models P792 and P892 low-range differential-pressure transducers, designed for use in VAV systems ... Differential pressure transducers. Kavlico Corp.: pressure sensors. Kavlico Corp.: refrigeration pressure transducer. ... New from this company are its Models P792 and P892 low-range differential-pressure transducers, designed for use in VAV systems ...
Id like to take advantage of the built-in power supply of this scope to power transducers for a pressure application. There ... Pressure transducers powered by Picoscope 4444 ?. Post discussions on projects you are working on. ... Is there anything I need to consider in utilizing these transducers ? Any Picoscope documents on D9 pinouts and suggestions for ... seem to be lots of inexpensive transducers ( e.g. Honeywell PX3 ) whose supply is 5VDC with ratiometric output. I should have ...
PRYDE Measurement Pty Ltd has introduced the new Setra Model 278 barometric pressure transducer that is ideal for Automated ... Offered in absolute pressure ranges from 500 to 1100hPa/mb, 600 to 1100 hPa/mb and 800 to 1100hPa/mb, the transducer provides ... PRYDE Measurement has introduced the new Setra Model 278 barometric pressure transducer that is ideal for Automated Weather ... the Model 278 barometric pressure transducer provides excellent thermal expansion co-efficient and low mechanical hysteresis, ...
Different types of pressure transducers are available for HVAC systems that integrate fully with Grundfos pressure sensor ... Pressure transducers. A pressure transducer, or pressure sensor, is fitted in a heating and cooling or ventilation system. A ... There are different types of pressure transducers available:. *A capacitive-type transducer acts like a capacitor where one ... pressure transducer measures the pressure in a specific location in a system and converts it into a signal which can be read by ...
Order Kavlico Pressure Sensors P1A-57A-1-A-06-C-E (1861-1014-ND) at DigiKey. Check stock and pricing, view product ... Product Index , Sensors, Transducers , Pressure Sensors, Transducers , Kavlico Pressure Sensors P1A-57A-1-A-06-C-E ... Pressure Sensor 100 PSI (689.48 kPa) Absolute Female - 1/4" (6.35mm) NPT 4 mA ~ 20 mA Cylinder ...
The pressure sensor includes a sensing side and a pressure reference side. At least one signal transmission media is coupled to ... The pressure sensing module provides ease of installation and manufacture because the module may easily be bonded and installed ... the sensor for transmitting the signal representative of pressure. A convex-shaped carrier is provided having a slot formed to ... The present invention relates to a pressure sensor module for use in catheters having a pressure sensor operable to provide a ...
We supply high-accuracy pressure transducer. We are the authorized agent of the manufacturer and the seller. (Offer to sell ... High-accuracy Pressure Transducer << FEATURES & CHARACTERISTICS >> We supply high-accuracy pressure transducer. We ... High-accuracy Piezoresistive Pressure Transducer is encapsulated in a stainless steel case through assembly and commissioning ...
  • In the first two chapters of this book there is information about the needs and potential applications of indwelling transducers both present and past, and will go into detail about many topics such as the fundaments of blood pressure transducers, studies of the intestinal motility and clinical aspects of cardiovascular pressure measurements. (routledge.com)
  • Blood pressure transducers are the devices used to measure arterial and venous blood pressure. (webnewswire.com)
  • Blood pressure transducers are small and lightweight devices consisting of a thin flexible metal diaphragm connected to strain gauge through inductive bridge. (webnewswire.com)
  • However, accuracy of device and lack of trained professionals would restraints the blood pressure transducers market. (webnewswire.com)
  • North America has the largest share in the global blood pressure transducers market followed by Europe, and Asia Pacific owing to high occurrence of cardiovascular disease suffering from hypertension in U.S. Asia Pacific region is expected to be the fastest growing region during the forecast period, owing to huge population base coupled with increasing disposable income. (webnewswire.com)
  • HTF Market Intelligence released a new research report of 92 pages on title 'Global Blood Pressure Transducers Market 2017-2021' with detailed analysis, forecast and strategies. (medgadget.com)
  • The analysts forecast the global blood pressure transducers market to grow at a CAGR of 4.17% during the period 2017-2021. (medgadget.com)
  • The report covers the present scenario and the growth prospects of the global blood pressure transducers market for 2017-2021. (medgadget.com)
  • The report, Global Blood Pressure Transducers Market 2017-2021, has been prepared based on an in-depth market analysis with inputs from industry experts. (medgadget.com)
  • Growing demand for disposable blood pressure transducers. (medgadget.com)
  • New from this company are its Models P792 and P892 low-range differential-pressure transducers, designed for use in VAV systems, fan static pressure, duct air flow, building pressurization, and filter monitoring applications. (esmagazine.com)
  • D GP:50 NY LTD has announced the introduction of its Model 136/236/336 Series , a family of compact, high-accuracy differential pressure transducers. (engineerlive.com)
  • Setra Systems, Inc. has added an integral static pressure probe for duct mounting to its Model 267 Series of low differential pressure transducers. (pmengineer.com)
  • Model 120/220/320 wet-to-wet differential pressure transducers offer pressure ranges of 0-500 PSID through 0 to 5,000 PSID. (highbeam.com)
  • Setra's Model 760 capacitance manometer is an absolute pressure transducer designed for accurate and repeatable vacuum measurements. (setra.com)
  • The Clipper and Organizer easily attach to any size I.V. pole and accommodate both horizontal and vertical transducer positions. (merit.com)
  • The Clipper and Organizer accessory easily attaches to any size IV pole and accommodates both horizontal and vertical transducer positions. (merit.com)
  • Alternatively, the transducer may be connected to a transmitter, which converts the signal to a variable voltage or current signal, 0-10 V or 4-20 mA respectively. (grundfos.com)
  • DMP305X-TST absolute pressure transmitter is a high performance pressure transmitter with international leading technology meticulously designed by LEEG instrument. (directindustry.com)
  • The Ashcroft® K1 is a proven and versatile pressure transducer/transmitter incorporating polysilicon thin film technology. (industrialcontrolsonline.com)
  • From an accuracy point of view, the range of a transmitter should be low (normal operating pressure at around the middle of the range), so that error, usually a percentage of full scale, is minimized. (omega.com)
  • If the installation is in an area where explosive vapors may be present, the transducer or transmitter and its power supply must be suitable for these environments. (omega.com)
  • Available in ranges from vacuum through 0/20,000psi, the pressure transducer can be configured from a number of process connections, output signals and electrical termination options. (foodengineeringmag.com)
  • Sensor output is 10 mV/V, 4 to 20 mA, or 1 to 5 V. The AST4200 provides gage, sealed gage, and compound-gage pressure measurement ranges up to 10,000 psi. (machinedesign.com)
  • The sensors are available in pressure ranges of ± 0.5-in. (esmagazine.com)
  • Offered in absolute pressure ranges from 500 to 1100hPa/mb, 600 to 1100 hPa/mb and 800 to 1100hPa/mb, the transducer provides long term stability of 0.1hPa/mb full scale per year. (ferret.com.au)
  • Pressure ranges from 0 to 25 psi to 0 to 3000 psi in gauge, absolute, or compound pressure are offered as well. (electronicdesign.com)
  • The list price for the psi gauge or compound pressure ranges is $579 each. (electronicdesign.com)
  • With pressure ranges from 5 inches of water column to 60,000 PSI and various material and output signal options, AST can design a standard or custom pressure sensor for liquids and gases that is cost-effective and reliable. (automation.com)
  • With pressure ranges up to 10,000 psig (689 bar), high-accuracy and exceptional durability, the Gems Sensors portfolio of general purpose industrial pressure transducers gives you the flexibility to specify the right sensor for your application. (gemssensors.com)
  • Setra's Model 730 is a high accuracy capacitance manometer, for measuring low vacuum pressure ranges. (setra.com)
  • The DCT is offered in pressure ranges from 0-1 psi through 0-3000 psi, to cover a broad range of applications, in absolute, compound and gauge pressure types. (ametekusg.com)
  • The Model DCT can be customized for OEM's, such as special pressure ranges, tighter calibration, different electrical connections or pressure connections, etc. (ametekusg.com)
  • The FP5000 is a configurable pressure sensor with industrial standard offerings that include selectable pressure ports, electrical connecters, communication outputs, and pressure ranges. (honeywell.com)
  • Typical applications: Industrial processes, aviation electronics, servo controls,oil industry, robotics… A Rugged Pressure Transducer The piezoresistive chip immersed in silicone oil is welded into a housing made of stainless steel AISI 316 L. High Sensitivity A nominal signal of 200 mV is obtained at a supply current of 1 mA for all standard pressure ranges. (directindustry.com)
  • These transmitters are offered in many standard pressure ranges with either current or voltage output signals. (industrialcontrolsonline.com)
  • The three pressure ranges of the WPS500X allow for accurate measurement and analysis of many automotive pressures including cylinder compression, fuel pressure, intake manifold vacuum and even pulses from the exhaust. (picoauto.com)
  • With three pressure ranges, a zoom function, pressure relief valve and a rechargeable Li-Po battery all enclosed in a durable housing the WPS500X is the cost-effective answer to pressure analysis. (picoauto.com)
  • The P4055 is ideal for low to medium pressure ranges and compatible with many types of l. (aerocontact.com)
  • Temp in two ranges, 0-60¢/200-400¢ (anticipate 2 transducers required) and ambient pressure from 10 to 20 psi. (electronicspoint.com)
  • Automation Products Group, Inc. (APG) introduced a new pressure transducer, the series PT-200 1% Industrial Pressure Transducer. (environmental-expert.com)
  • The product overview "Pressure transmitters and pressure transducers" displays the transmitters and transducers from KELLER AG in a simple layout. (environmental-expert.com)
  • The National Physical Laboratory (NPL) has developed shock tube facilities for the calibration of these sensors under the dynamic pressure conditions that they experience in use. (environmental-expert.com)
  • Setra is a leading designer and manufacturer of pressure transducers, current switches and transducers, humidity transmitters, and calibration systems for a broad range of applications across the HVAC/R industry. (authorstream.com)
  • Ideal tools are manufactured for checking calibration of low/very low, pressure digital indicators, manometers, inclined manometers, analog (Capsule) , gauges, draft gauges, pneumatic loops, Calibration of Digital/Analog pressure gauges/indicators/pressure transmitters/transducers and hydro-static pressure testing etc. (authorstream.com)
  • Model PHP 60 is ideal for checking calibration of pneumatic digital indicators, manometers, pressure transducers, transmitters, pneumatic loops etc. (authorstream.com)
  • Because the output of a pressure transducer depends on its calibration, high-volume manufacturers use automated adjustment stations to test and trim components during assembly. (highbeam.com)
  • By short circuit, a shunt resistor will be connected which provides the melt pressure transducer with an 80% full scale output signal for calibration without need of the external calibration pressure. (industrysearch.com.au)
  • Good agreement is found between all calibration data, and a smooth curve is fit through all resistance change versus pressure data up to 1.5 GPa. (unt.edu)
  • How many points of calibration does the FP5000 pressure sensor offer? (honeywell.com)
  • The FP5000 pressure sensor comes standard with a 5-point calibration and the calibration certificate is provided with each sensor. (honeywell.com)
  • After appropriate sensor calibration, completed at the factory, each etalon cavity length corresponds to a specific pressure value. (harvardapparatus.com)
  • The need for reliable dynamic calibration of pressure transducers is becoming increasingly more important, especially with growing demands for improved performance, increased reliability and efficient energy generation from the aerospace, defense and energy sectors - all while being mindful of low lifecycle cost, minimizing maintenance downtime and reducing any negative impact to the environment. (spie.org)
  • However, these pressure transducers are only as valuable as the dynamic calibration they possess so that more understanding of the physical measurement can be ascertained by the end-user. (spie.org)
  • The shock tube is an established laboratory tool capable of imparting near instantaneous pressure stimulus for the purpose of providing quantifiable dynamic calibration of pressure transducers. (spie.org)
  • A pressure transducer comprising an elongate hollow outer housing having a pressure sensor diaphragm and externally positioned fixing means which facilitates pressure tight introduction of the diaphragm into a pressure sensing port provided in apparatus capable of generating pressures to be sensed, two. (google.com)
  • 6. A pressure transducer according to claim 5 in which the inner tubular member is arranged in contact with the centre of the diaphragm, and in which the outer tubular member is arranged in contact with an end part of the housing adjacent the diaphragm, the ends of the two tubular members remote from the diaphragm being coupled to the transducer means. (google.com)
  • A capacitance transducer has a central chamber with a conductive diaphragm disposed therein to separate the chamber into at least two portions, at least one portion having an electrical conductor disposed thereon to form in combination with the diaphragm at least one variable sensor capacitor, and wherein. (google.ca)
  • 2. A transducer according to claim 1 wherein the diaphragm means is supported with respect to the sensor housing to provide an initial prestress on the diaphragm. (google.ca)
  • 4. Apparatus according to claim 1 wherein the respective passageway means transmits the changes in pressure through the substantially incompressible fluid to the respective central chamber and the diaphragm means therein without subjecting the sensor housing to other substantial mechanical stress. (google.ca)
  • 7. Apparatus according to claim 6, wherein the sensor housing and diaphragm means have coefficients of elasticity and are of relative size so that the stress on the diaphragm means changes to provide a maximum error in output across the span of response of the transducer of less than 1% for each 1,000 psi of static line pressure change on the diaphragm means at the same differential pressure. (google.ca)
  • 8. Apparatus according to claim 6 wherein the sensor housing and diaphragm means material is such that the maximum error in output across the span of response of the transducer is less than 0.25% per 1,000 psi of static line pressure change on the diaphragm means at the same differential pressure. (google.ca)
  • 13. The apparatus as specified in claim 12 wherein said isolator means comprises an isolator housing, said isolator chamber being formed in said isolator housing, said wall deflectable under pressure comprising a flexible diaphragm enclosing said isolator chamber. (google.ca)
  • at least one silicon strain gage glass bonded to a top surface of the raised metal beam, wherein the fluid pressure applied to the diaphragm lower surface deflects the diaphragm, producing a strain on the raised metal beam and the associated stain gage, thereby producing an electrical output indicative of the fluid pressure. (freepatentsonline.com)
  • 11. The transducer of claim 10, wherein the metal beam thickness is greater than the diaphragm thickness. (freepatentsonline.com)
  • A semiconductor pressure transducer assembly comprising a silicon diaphragm assembly and a glass covering member. (google.com.au)
  • 2. A semiconductor pressure transducer assembly as claimed in claim 1, wherein a photoresist formed on the surface of said silicon diaphragm assembly is used as mask means in the Ion Implantation method. (google.com.au)
  • A novel fiber optic sensor that determines pressure from diaphragm curvature is discussed. (spie.org)
  • Additionally, the pressure diaphragm features a surface treatment with special alloy coating for all models. (industrysearch.com.au)
  • The isolated pressure sensing diaphragm minimizes zero-shift during hammer up and eliminates long-term signal drift in the field. (honeywell.com)
  • All-welded, stainless steel assembly, shock/vibration ratings, and isolated pressure sensing diaphragm increase reliability. (honeywell.com)
  • This hydrostatic pressure is transmitted to the measuring cell via a stainless steel diaphragm. (pepperl-fuchs.com)
  • The housing is filled with silicone oil for the transfer of the pressure from the diaphragm to the sensing component. (directindustry.com)
  • Modern low-pressure chemical vapor deposition methods provide simple, stable molecular bonds between a proven metal diaphragm and a polysilicon strain gage bridge. (industrialcontrolsonline.com)
  • A transducer assembly for measuring absolute pressure utilizing a glass substrate and a thin silicon diaphragm upon which is diffused a piezoresistive bridge circuit. (google.com)
  • Ambient pressure variations cause stress variation in the diaphragm, resulting in unbalance of the bridge which can be sensed with associated circuits to give an indication of the ambient pressure. (google.com)
  • L. Albritton Attorney, Agent, or FirmFlehr, Hohbach, Test, Albritton & Herbert [57] ABSTRACT A transducer assembly for measuring absolute pressure utilizing a glass substrate and a thin silicon diaphragm upon which is diffused a piezoresistive bridge circuit. (google.com)
  • Experimental results are presented for a pressure transducer operational in the 0-60 psi range, and a miniature pressure transducer operational in the 0-5 psi range designed for in vivo medical applications. (spie.org)
  • PRYDE Measurement has introduced the new Setra Model 278 barometric pressure transducer that is ideal for Automated Weather Systems (Aws) applications. (ferret.com.au)
  • Using Setra's long proven Setraceram variable-capacitance sensor, which is a symmetrical ceramic capsule that deforms proportionally to applied pressure and patented electronic circuitry, the Model 278 barometric pressure transducer provides excellent thermal expansion co-efficient and low mechanical hysteresis, which contributes significantly to its long-term stability. (ferret.com.au)
  • High-accuracy Piezoresistive Pressure Transducer is encapsulated in a stainless steel case through assembly and commissioning by use of advanced foreign silicon piezoresistive sensitive elements. (go.jp)
  • The global Medical Pressure Transducers market is valued at 240 million US$ in 2017 and will reach 360 million US$ by the end of 2025, growing at a CAGR of 5.3% during 2018-2025. (reportsnreports.com)
  • To analyze and study the global Medical Pressure Transducers sales, value, status (2013-2017) and forecast (2018-2025). (reportsnreports.com)
  • The Infinium Global Research analyzes the report of Blood Pressure Transducer Market over the period of 2018 to 2024. (webnewswire.com)
  • According to report the global blood pressure transducer market is projected to grow at a CAGR of 5.7% over the forecast period of 2018-2024. (webnewswire.com)
  • Setra Sensing Solutions gives the top Product & Design Considerations to be taken into account for selecting a pressure transducer for industrial applications. (authorstream.com)
  • Setra has been providing the industrial marketplace with millions of pressure transducers for a variety of applications since 1967. (authorstream.com)
  • This invention relates to pressure transducers, especially to those used in processing industries such as plastics, rubber and food for sensing the pressure to which the materials are subjected during their forming processes. (google.com)
  • The present invention generally relates to pressure transducers, and particularly to a system for compensating errors in a pressure transducer. (google.com)
  • Providing a minimum of 10 million operating cycles with an accuracy of +/-0.25% FS in operating temperatures from -40ºF to 180ºF, APG's PT-400 amplified output pressure transducers cover pressures from 0 to 20,000psi, high-burst pressure to 3x full scale and overpressure to 2x full scale. (foodengineeringmag.com)
  • Low-cost barometric pressure transducers are designed for use in environmental applications that require excellent accuracy, fast response, and long term reliability. (coleparmer.com)
  • The new Rotork Fairchild T7500 range of transducers is specifically designed for these low pressure control systems with set point accuracy of 0.1%, even at pressures of less than 100 mBar. (environmental-expert.com)
  • The ASM is the highest accuracy transducer for measuring gauge, absolute, compound and vacuum pressure in the AccuSense™ product line. (setra.com)
  • Designed to withstand vibration and shock, Omega's PX209 (cable style) and PX219 (connector style) transducers deliver consistent accuracy in small, stainless steel cases with either 0V DC to 5V DC, 0V DC to 10V DC, or 4 mA to 20 mA outputs. (highbeam.com)
  • OMEGA ENGINEERING INC., STAMFORD, CONN. The company says aerospace silicon technology in its PX309 Series pressure transducers delivers accuracy at competitive prices. (highbeam.com)
  • March 29, 2017 - Bestech Australia offers the P895 Pressure Transducer for applications requiring accuracy and performance through ambient temperature changes. (automation.com)
  • It is designed for laboratory pressure measurement, automotive test cells, and any high accuracy application. (automation.com)
  • HBM pressure transducers and pressure sensors ensure precise results up to accuracy class 0.01. (hbm.com)
  • Accuracy is excellent for the industrial transducer, less than ±0.3% full scale over pressure and less than ±1.0% full scale over a wide compensated temperature range. (ametekusg.com)
  • With high accuracy and a wide measuring range, the WPS600C Hydraulic Pressure Transducer connects to your PicoScope for convenient analysis and diagnosis of pressurized systems. (picoauto.com)
  • The 750C33PCD3GA High-Pressure Baratron® Absolute Capacitance Manometer features 3000 psia Full Scale pressure measurement with 1% reading accuracy, a 4 VCR-style female fitting, and 0-5 VDC output signal from a 9-pin D-subminiature electrical connector. (newport.com)
  • With tight process control, the 750C is especially useful in applications requiring higher accuracy at the lower ends of the pressure measurement range. (newport.com)
  • The pressure manometer is made 100% from stainless steel, and its display panel is 100mm in diameter with 1.5% accuracy for indicated melt pressure. (industrysearch.com.au)
  • High accuracy option provides confidence in the actual measured pressure value, particularly for smaller changes in pressure, allowing drilling operation adjustments as needed. (honeywell.com)
  • The P3 Top Class pressure transducer facilitates extremely precise pressure measurement and, owing to its excellent accuracy class of 0.1, is ideal for the measurement of not only static pressure but also dynamic pressure variations, pressure peaks, and pressure fluctuations. (hbm.com)
  • The first range gives you high resolution and accuracy for high-pressure tests such as cranking and running cylinder compression or fuel pressure testing. (picoauto.com)
  • Accuracy of common pressure transducers could range from 0.5% to 0.05 % of the full-scale output. (omega.com)
  • To adequately and accurately reproduce a wide range of frequencies with even coverage, most loudspeaker systems employ more than one driver, particularly for higher sound pressure level or maximum accuracy. (wikipedia.org)
  • The digitally compensated Model 136/236/336 Series can measure differential pressures as low as 20in WCD and line pressures up to 1000 PSID (69 BAR), with accuracies of up to ±0.05% FSO. (engineerlive.com)
  • 7. A pressure transducer according to claim 6 in which the transducer means comprises a strain gauge element which is arranged to be responsive to differential movement between the elongate members to produce an electrical signal. (google.com)
  • A strain gauge transducer is arranged as a long length of conductor arranged in a zigzag pattern. (grundfos.com)
  • 2. The miniaturized pressure sensing module as claimed in claim 1 , wherein said sensor is selected from a group comprising a resistive-type sensor, a capacitive-type sensor, a photoelectric-type sensor, and a strain-gauge-type sensor. (google.ca)
  • Thanks to strain gauge technology and monolithic design, the sensors are extremely durable, and are also suitable for high pressure measurements up to 15,000 bar. (hbm.com)
  • Strain gauge technology-based pressure sensors from HBM provide reliable and trustworthy results even in dynamic applications with a large number of load cycles - from the lowest pressures, all the way up to 15,000 bar (218 kpsi). (hbm.com)
  • The melt pressure transducers and transmitters are constructed with a full bridge strain gauge circuit and are made wholly from stainless steel material. (industrysearch.com.au)
  • The MPT160-series are basic models of melt pressure transducers, with an output of either the strain gauge signal (eg. (industrysearch.com.au)
  • Model 528 strain gauge industrial pressure transducer's modular design is offered with a variety of pressure fittings and electrical connections, enabling the unit to be custom configured. (achrnews.com)
  • If you wish to print or view a selection of pressure transducers from our catalogue, click the PDF symbol. (industrial-needs.com)
  • Measurement Specialties (MEAS) recently introduced the M5100 and U5100 Pressure Transducers designed for use in industrial applications that require long-term stability in harsh environmental conditions. (automationmag.com)
  • The current which flows between the two conductive ink electrodes varies as a function of the force with which the stylus tip is pressed against the data tablet, thus providing an analog output which can be detected as a function of pressure or which can be detected to determine when the pressing force exceeds a predetermined value. (freepatentsonline.com)
  • The PTN Analog Pressure Transducer Series features a stainless-steel housing and completely isolated sensing element for an extremely robust option for pneumatic and hydraulic applications. (norgren.com)
  • Transducers are sensors that convert biological signals into electrical analog signals. (adinstruments.com)
  • These general performance Baratron® capacitance manometers are available as pressure transducers with an analog signal proportional to absolute or differential pressure, or as switches with relay outputs based on pressure. (mksinst.com)
  • Series 800 switch incorporates an electronic pressure switch and pressure transducer with local indication and analog output of 4 mA or 0-10 Vdc. (hydraulicspneumatics.com)
  • These transducers are connected to an electrical convertor that converts blood pressure into analog electrical signal and helps in the detection of consistent and accurate blood pressure through amplifier. (webnewswire.com)
  • A blood pressure transducer is attached to an electrical convertor that converts blood pressure into analog electrical signals that helps determine the exact blood pressure through amplifier. (medgadget.com)
  • The Model 761 is a low cost transducer designed for semi-conductor, petrochemical, pharmaceutical/process and industrial vacuum markets. (setra.com)
  • The Type 750C is referenced to high vacuum pressure, and is designed for use in industrial, analytical, and electronic measurement applications. (newport.com)
  • All metal parts in contact with the pressure media are made of stainless steel AISI 316 L. The fully welded housing is vacuum-tight. (directindustry.com)
  • For example: Let's say your transducer is connected to the intake manifold vacuum on a running engine at idle with the transducer set to mode 2 (-15 to 50 psi) and the waveform on your PicoScope is at -9 psi. (picoauto.com)
  • The transducers weigh 10 oz. and offer standard 4-20mA, 0-5 VDC and 0-10 VDC outputs. (foodengineeringmag.com)
  • Pressure transducers have amplified outputs. (highbeam.com)
  • a href="https://www.highbeam.com/doc/1G1-142874916.html" title="Pressure transducers have amplified outputs. (highbeam.com)
  • AMETEK's Model DCT pressure transducer is a digitally compensated unit available with many different outputs including 4-20 mA, 1-6 VDC, 1-5 VDC and 0-5 VDC. (ametekusg.com)
  • The outputs of all of the transducer elements are employed in locating the particular element which is centrally located over the artery. (swri.org)
  • Then, pulse amplitude outputs from the limited number of transducer elements are employed in selecting that element within the limited-number group which is to be used for obtaining blood pressure measurements. (swri.org)
  • Class I, Zone 1 AExd IIC T4 Gb as well as ATEX (31EA/32EA), Exd IIC T4 Gb (ambient temperature: -40 to +95 °C). Units are available with a broad selection of pressure ports, electrical outputs, cable lengths and configurations. (automationworld.com)
  • There are several types of outputs for pressure transducers. (omega.com)
  • In order to obtain high quality end products, melt pressures which obtain during pressure forming processes such as a plastics extrusion process must be controlled and accordingly they should be carefully monitored. (google.com)
  • These demanding applications are forcing pressure transducer manufacturers to include features in their products so that the device can operate in a hostile environment while maintaining a good price-performance ratio with excellent durability. (sae.org)
  • Automation Products Group, Inc. (APG) introduces a new submersible pressure transducer, the Series PT-510W Wastewater Submersible Pressure Transducer. (environmental-expert.com)
  • Current to Pressure Transducers in which some products are NEMA 4X enclosures, compact, low cost, and explosion-proof. (dwyer-inst.com)
  • Manufactured in New Jersey, AST pressure sensing products are built with a full selection of approvals including: ABS, Explosion-proof, Intrinsically Safe, and Non-Incendive ratings. (automation.com)
  • It's not often that something truly new comes along in the world of pressure transducers, but the TD1000 from Transducers Direct and available from PVL is a revolutionary design employing digital technology, instead of the same basic analogue design circuitry used in conventional products. (controlengeurope.com)
  • Focused on premium products, and adapting innovative technologies to meet customer needs, Kavlico Pressure Sensors is the reliable solutions provider for the harshest and most demanding applications across the globe. (aerocontact.com)
  • To calculate the market size, the report considers the revenue generated from the sales of transducer products. (medgadget.com)
  • State of the art piezoelectric (PE) and piezoresistive (PR) silicon MEMS pressure transducers specifically designed for harsh environments are answering the call to provide the necessary measurements for applications such as high temperature gas turbine engine health monitoring (both in-flight and land/marine based aero-derivative), high pressure blast studies/ordnance explosion optimization, low profile wind tunnel testing/flight testing, etc. (spie.org)
  • The pressure is in the range of +/- 5 psi and the water is flowing in a 1" line. (picotech.com)
  • We offer a wide range of pressure and force transducers for research applications including blood pressure, telemetry, temperature and respiratory measurements. (adinstruments.com)
  • A range of force transducers are available. (adinstruments.com)
  • July 16, 2014 - American Sensor Technologies (AST) achieved ATEX certification for its range of intrinsically safe pressure transducers. (automation.com)
  • Gems Sensors Pressure Transducers feature an extensive range of options, technologies and configurations to meet demanding applications including off-highway vehicles, natural gas, semiconductor, HVAC/R, robotics transportation and general industrial. (gemssensors.com)
  • Static line pressure is 10,000 PSI with a single-sided overpressure rating as high as three times the sensor range. (highbeam.com)
  • I'm assuming the unit will output the correct pressure regardless of it's operating range. (advanced-flight-systems.com)
  • A new 50-ohm piezoresistive pressure gauge has been developed and calibrated in the range 0 to 4.0 GPa. (unt.edu)
  • The Honeywell Model FP5000 Series is a media-isolated piezoresistive silicon pressure sensor offering multiple output options (0 V to 5 V, 0 V to 10 V, 4 mA to 20 mA, or Intrinsically Safe 4mA to 20 mA) for reading pressure over the specified full-scale pressure span and temperature range. (honeywell.com)
  • Available in both hand-held and Paley set-ups, Meritrans Pressure Transducers can also be configured with a broad range of Merit accessories, including Marquis® series stopcocks, manifolds, CCS™ Coronary Control Syringes, and Medallion® syringes. (merit.com)
  • In addition, depending upon selected range, full-scale burst pressure performance can exceed 60,000 PSI (4000 bar). (automationworld.com)
  • Probably the single most important decision in selecting a pressure transducer is the range. (omega.com)
  • For more than 50 years Kavlico Pressure Sensors has been a leading expert in designing, developing, and manufacturing a broad range of precision, pressure, pressure and temperature, fluid level, and specialty sensors. (aerocontact.com)
  • Where high fidelity reproduction of sound is required, multiple loudspeaker transducers are often mounted in the same enclosure, each reproducing a part of the audible frequency range (picture at right). (wikipedia.org)
  • Industrial pressure transducers are used in a wide variety of industrial applications ranging from HVAC/R compressors, refrigeration and variable speed pumps to hydraulic pressure, oil and water. (authorstream.com)
  • AST's ATEX certified pressure transducers are available for submersible and non-submersible applications including oil field SCADA systems, compressors, hydraulic systems, water management and more. (automation.com)
  • The P3 Top Class is suitable for pressure measurement in industrial applications such as those incorporating diesel and hydraulic technologies. (hbm.com)
  • In one embodiment, a connector (150) of the reusable cable includes a CPU (70), which determines the offset and self-heating errors of the pressure transducer during the first 30 seconds it is energized, stores the corrections in its internal memory and compensates the output signal produced by the pressure transducer for those errors and for variations in ambient temperature. (google.com)
  • Used to measure arterial and venous blood pressure in animals. (adinstruments.com)
  • Inexpensive pressure transducer used to measure arterial blood pressures in all species, even on mice with a high heart rate. (harvardapparatus.com)
  • The series PT-200 1% Industrial Pressure Transmitters are rugged, general purpose sensors that offer reliable and accurate measurements under harsh conditions. (environmental-expert.com)
  • The Disposable Blood Pressure (BP) Transducers are designed to give consistent and accurate readings of arterial and venous blood pressure measurements in animals of all sizes. (adinstruments.com)
  • It is designed for a variety of pressure measurements where resistance to vibration and superior stability through temperature change is required. (automation.com)
  • Both the rigid stem and flexible extension provide thermal isolation to the melt pressure transducer's electronic circuitry, which makes it suitable for measurements in plastic, rubber and chemical fibre industries. (industrysearch.com.au)
  • Setting high industry standards, the P3 Top Class series of pressure transducers provides high-precision measurements and have only a small measurement uncertainty. (hbm.com)
  • However, PVDF sensors in compressive mode are insufficient for the low frequency and high sensitivity requirements of vehicle surface pressure measurements. (spie.org)
  • Under steady flow conditions, cantilever and clamped-clamped unimorphs with segmented electrode coverage configurations serve as alternative candidates for differential pressure measurements. (spie.org)
  • The signal conditioner is designed to determine the cavity length to the nanometer level, providing the researcher with an extremely accurate and repeatable pressure measurement system. (harvardapparatus.com)
  • A high-sensitivity piezoresistive silicon chip is used for pressure sensing. (directindustry.com)
  • They have several pages for temperature transducers, and one for pressure transducers. (electronicspoint.com)
  • At Kavlico Pressure Sensors, designing and developing pressure sensors for mission critical applications is our focus and specialty. (aerocontact.com)
  • Featuring a rigid stem and flexible extension, the BCM Sensors melt pressure transducers offered by Bestech Australia are suitable for measuring with plastics, rubbers and chemical fibres. (industrysearch.com.au)
  • Setra's Model 204 is the "standard" for measuring gauge and absolute pressure in the Test & Measurement industry. (setra.com)
  • Request more information to see how we can help you with a pressure gauge solution that fits your exact needs. (ametekusg.com)
  • The unit's CVD stain gauge design is resistant to aging and virtually insensitive to thermal transients and pressure cycling, making it ideal for use in HVAC compressors and refrigeration, states the company. (achrnews.com)
  • Flexibility Versions: Absolute and sealed gauge pressure. (directindustry.com)
  • its digital temperature compensation ensures a total error band better than +/-1% between -20°C and +85°C. An advanced sensor and electronics ensure stability in the presence of overpressure, shock, vibration and extreme pressure cycling. (foodengineeringmag.com)
  • On the other hand, one must always consider the consequences of overpressure damage due to operating errors, faulty design (water hammer), or failure to isolate the instrument during pressure-testing and start-up. (omega.com)
  • Research and development of indwelling pressure transducer, explaining the principles of pressure transducer, biomedical applications. (routledge.com)
  • The M5100 features Measurement Specialties' proprietary Microfused technology in a compact, rugged, vibration-resistant package, recommended for high pressure, high cycle count applications. (automationmag.com)
  • Ideal for applications in the petrochemical, power generation and process industries, the MM300 provides simple, accurate moisture measurement of -100 to +20°C dew point in gases at line pressure or atmospheric pressure. (environmental-expert.com)
  • It features low power consumption, while its instant warm-up feature makes it suitable for environmental applications where pressure readings must be taken quickly. (ferret.com.au)
  • Learn mroe about these pressure transducers and their market applications here. (authorstream.com)
  • The report on Global Ultrasound Transducer Market is a professional report which provides thorough knowledge along with complete information pertaining to the Ultrasound Transducer industry a propos classification, definitions, applications, industry chain summary, industry policies in addition to plans, product specifications, manufacturing processes, cost structures, etc. (authorstream.com)
  • The certification allows AST to expand its support of pressure and level measurement applications in oil and gas and alternative energy markets in Europe and the Middle East. (automation.com)
  • The Model 209H Stainless Steel Pressure Transducer is designed for customers who require high performance, reliability and versatility in harsh applications. (setra.com)
  • The Model 209's capacitive transducer is designed for industrial applications with demanding price and performance requirements. (setra.com)
  • Pressure transducers can be connected to any control system due to their ability to emit a standard signal so customers can use pressure transducers for many different applications. (industrial-needs.com)
  • Models 434/435/437 Wing Union/Hammer Union Pressure Sensors are designed for demanding oil and gas applications as well as stimulation and circulation systems. (honeywell.com)
  • Where can I get a list of potential applications for the FP5000 pressure sensor? (honeywell.com)
  • The 31EP/EA and 32EP/EA Series are designed to withstand the environmental and pressure conditions common to oil and gas equipment applications. (automationworld.com)
  • The WPS500X eliminates this need by giving you one ultra-high resolution transducer that can be used for a multitude of automotive diagnostic applications. (picoauto.com)
  • FISO-LS series pressure sensors were designed as semi-disposable for multi-use applications in the life-sciences and small animal research. (harvardapparatus.com)
  • There are multiple types of pressure transducers for a variety of applications. (omega.com)
  • Each pressure transducer has different aspects that will impact how it works and the applications the pressure transducer works best for. (omega.com)
  • Higher accuracies are desired when it is necessary to read very low pressures for critically demanding applications. (omega.com)
  • Being mechanically compliant and minimally invasive to the host structure, PVDF can be conformed to a variety of surfaces using adhesive bonding, thus making it a suitable candidate for surface pressure mapping and acoustic pressure measurement applications. (spie.org)
  • Chapters 3, 4 & 5 explain and give information on manufacturers considerations of indwelling pressure transducer, specifications of commercial pressure transducers. (routledge.com)
  • The designated "32 Series" of each group features higher proof pressure specifications. (automationworld.com)
  • Suitable for static and dynamic pressure measurement where an amplified output signal is desired, the transducers are cCSAus-certified for use in hazardous locations. (foodengineeringmag.com)
  • The sensor uses a pressure-dependent sealed capacitor element constructed from fused quartz plates, and circuit detection schemes to produce the voltage signal output. (sae.org)
  • Precise pressure control, where output pressures must be accurately held at low pressures down to 70 mBar (1 psi), has traditionally been a difficult task for industrial instrumentation. (environmental-expert.com)
  • Converts picofarad capacitance changes in the transducer into an amplified DC output voltage by means of a patented circuit. (adinstruments.com)
  • The extreme temperatures also create errors in the output of the transducer. (omega.com)
  • Reliable over more than 100 million cycles, the transducers incorporate sputtered thin-film pressure sensing technology, all stainless steel wetted parts and IP67 enclosures. (automationworld.com)
  • Memscap reusable pressure transducer. (philips.co.uk)
  • Merit Medical's Meritrans accessories include organizer plates, pole mounts, and reusable cables to help you optimize the use of your Meritrans pressure transducer. (merit.com)
  • A reusable cable (160) connected to a pressure monitor (14) is intended for use with a plurality of disposable pressure transducers (12). (google.com)
  • On the basis of product type the global blood pressure transducer market is categorized into reusable transducers and disposable transducers. (webnewswire.com)
  • 3. A pressure transducer according to claim 1 in which the transducer means is arranged to produce an electrical signal in dependence upon the pressure sensed. (google.com)
  • 9. A pressure transducer according to claim 1 in which the transducer means comprises an optical detector arrangement responsive to differential movement between the elongate members, the optical detector arrangement including photo-detectors for enabling the production of an electrical signal. (google.com)
  • 10. A pressure transducer according to claim 9 in which the two elongate members each have a graticule secured thereto, illumination means being provided such that light shines through the graticules onto the photo-detectors whereby the electrical signal is produced consequent upon differential movement between the two elongate members. (google.com)
  • A pressure transducer measures the pressure in a specific location in a system and converts it into a signal which can be read by an instrument, for example resistance, inductance or capacitance. (grundfos.com)
  • A piezoelectric pressure sensor converts pressure into an electric signal when compressed. (grundfos.com)
  • The present invention relates to a pressure sensor module for use in catheters having a pressure sensor operable to provide a signal representative of pressure. (google.ca)
  • At least one signal transmission media is coupled to the sensor for transmitting the signal representative of pressure. (google.ca)
  • Interleukin-10 treatment attenuates pressure overload-induced hypertrophic remodeling and improves heart function via signal transducers and activa. (nih.gov)
  • Interleukin-10 treatment attenuates pressure overload-induced hypertrophic remodeling and improves heart function via signal transducers and activators of transcription 3-dependent inhibition of nuclear factor-κB. (nih.gov)
  • In neonatal rat ventricular myocytes and H9c2 myoblasts, ISO activated nuclear factor-κB and inhibited signal transducers and activators of transcription 3 (STAT3) phosphorylation. (nih.gov)
  • Medical pressure transducer is medical device that transforms one form of energy to another, eg, the pressure to an electrical signal. (reportsnreports.com)
  • By mechanical connection the pressure is transferred to the sensing unit, which translates it to an electrical signal. (reportsnreports.com)
  • The fluctuation in the signal caused by the valves opening and closing versus atmospheric pressure forcing air into the manifold will be visible, but will only make up a small portion of the overall signal. (picoauto.com)
  • A gain-set resistor (56) is included in a male modular phone plug (202) of a disposable cable that is integrally connected to the pressure transducer, and is used by the compensation circuit to control the signal produced by the pressure transducer, compensating for the characteristic sensitivity of the device. (google.com)
  • In a second embodiment, the disposable cable includes an offset resistor (250), and the compensation system uses a charge balance modulator 9260) to produce a pulse width modulated signal that is compensated for both the offset and characteristic sensitivity of the pressure transducer. (google.com)
  • Piezoelectric elements serve as a preferred candidate for measuring dynamic pressure owing to their high sensitivity, signal-to-noise ratio, high natural frequency, and suitability for miniaturization. (spie.org)
  • The MPT26X-series also feature a pressure manometer in addition to the functions of the previous models. (industrysearch.com.au)
  • The Series 8 pressure sensors are extremely durable, even when exposed to fast pressure peaks. (directindustry.com)
  • The most common cause of submersible failure is moisture on the backside of the transducer. (xtronics.com)
  • Pressure transducers suitable for monitoring such process pressures are known but known transducers tend to be somewhat inaccurate due for example to temperature dependence. (google.com)
  • Various high pressure direct diesel injection systems have been designed to atomize the fuel so that. (sae.org)
  • Sidhu, K., "Packaging Very High Pressure Transducers for Common Rail Diesel Injection Systems," SAE Technical Paper 982020, 1998, https://doi.org/10.4271/982020 . (sae.org)
  • This paper describes a low-cost, high-performance manifold absolute pressure sensor for the automotive industry. (sae.org)
  • The unit's one-piece 17-4PH or 316L high-strength stainless-steel bulkhead design is free of welds, internal O-rings, and fluid-filled cavities for high-proof and burst-pressure uses. (machinedesign.com)
  • Designed for installation on a modular "Block" gas stick or panel, the Model 217 pressure transducer monitors specialty gas processes in high-purity gas delivery systems and semiconductor process tools. (electronicdesign.com)
  • They have been developed especially for the measurement of high pressures. (directindustry.com)
  • High temperature transient pressure transducer tested for liquid metal systems. (dp.la)
  • The first end of the cylindrical member is provided with a fluid port allowing the passage of fluid into and out of the cylindrical member due to pressure changes in the physiological fluid being monitored. (google.es)
  • With reliable precision, customized configurations and a clear fluid path, Meritrans Pressure Transducers can be customized to fit the needs of your physicians and labs. (merit.com)
  • Transducers providing reliable precision with customized configurations and a clear fluid path. (merit.com)
  • Even in extremely adverse ambient conditions - HBM pressure transducers and pressure sensors are corrosion-resistant and offer IP67 protection. (hbm.com)