Determination, by measurement or comparison with a standard, of the correct value of each scale reading on a meter or other measuring instrument; or determination of the settings of a control device that correspond to particular values of voltage, current, frequency or other output.
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.
A basis of value established for the measure of quantity, weight, extent or quality, e.g. weight standards, standard solutions, methods, techniques, and procedures used in diagnosis and therapy.
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)
A system for verifying and maintaining a desired level of quality in a product or process by careful planning, use of proper equipment, continued inspection, and corrective action as required. (Random House Unabridged Dictionary, 2d ed)
Methods of creating machines and devices.
A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.
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.
Remains, impressions, or traces of animals or plants of past geological times which have been preserved in the earth's crust.
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)
Concentration or quantity that is derived from the smallest measure that can be detected with reasonable certainty for a given analytical procedure.
The analysis of a chemical substance by inserting a sample into a carrier stream of reagent using a sample injection valve that propels the sample downstream where mixing occurs in a coiled tube, then passes into a flow-through detector and a recorder or other data handling device.
Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.
Statistical formulations or analyses which, when applied to data and found to fit the data, are then used to verify the assumptions and parameters used in the analysis. Examples of statistical models are the linear model, binomial model, polynomial model, two-parameter model, etc.
Method of analyzing chemicals using automation.
Methodologies used for the isolation, identification, detection, and quantitation of chemical substances.
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)
Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant & Hackh's Chemical Dictionary, 5th ed, p301, p499)
A noninvasive technique that uses the differential absorption properties of hemoglobin and myoglobin to evaluate tissue oxygenation and indirectly can measure regional hemodynamics and blood flow. Near-infrared light (NIR) can propagate through tissues and at particular wavelengths is differentially absorbed by oxygenated vs. deoxygenated forms of hemoglobin and myoglobin. Illumination of intact tissue with NIR allows qualitative assessment of changes in the tissue concentration of these molecules. The analysis is also used to determine body composition.
Lack of correspondence between the way a stimulus is commonly perceived and the way an individual perceives it under given conditions.
Measuring and weighing systems and processes.
A principle of estimation in which the estimates of a set of parameters in a statistical model are those quantities minimizing the sum of squared differences between the observed values of a dependent variable and the values predicted by the model.
Theoretical representations that simulate the behavior or activity of systems, processes, or phenomena. They include the use of mathematical equations, computers, and other electronic equipment.
Graphical representation of a statistical model containing scales for calculating the prognostic weight of a value for each individual variable. Nomograms are instruments that can be used to predict outcomes using specific clinical parameters. They use ALGORITHMS that incorporate several variables to calculate the predicted probability that a patient will achieve a particular clinical endpoint.
Any of a variety of procedures which use biomolecular probes to measure the presence or concentration of biological molecules, biological structures, microorganisms, etc., by translating a biochemical interaction at the probe surface into a quantifiable physical signal.
The measurement of radiation by photography, as in x-ray film and film badge, by Geiger-Mueller tube, and by SCINTILLATION COUNTING.
A microanalytical technique combining mass spectrometry and gas chromatography for the qualitative as well as quantitative determinations of compounds.
Chromatographic techniques in which the mobile phase is a liquid.
Electric conductors through which electric currents enter or leave a medium, whether it be an electrolytic solution, solid, molten mass, gas, or vacuum.
The use of electronic equipment to observe or record physiologic processes while the patient undergoes normal daily activities.
A mass spectrometry technique using two (MS/MS) or more mass analyzers. With two in tandem, the precursor ions are mass-selected by a first mass analyzer, and focused into a collision region where they are then fragmented into product ions which are then characterized by a second mass analyzer. A variety of techniques are used to separate the compounds, ionize them, and introduce them to the first mass analyzer. For example, for in GC-MS/MS, GAS CHROMATOGRAPHY-MASS SPECTROMETRY is involved in separating relatively small compounds by GAS CHROMATOGRAPHY prior to injecting them into an ionization chamber for the mass selection.
A technique using antibodies for identifying or quantifying a substance. Usually the substance being studied serves as antigen both in antibody production and in measurement of antibody by the test substance.
Behavior of LIGHT and its interactions with itself and materials.
A mass spectrometry technique used for analysis of nonvolatile compounds such as proteins and macromolecules. The technique involves preparing electrically charged droplets from analyte molecules dissolved in solvent. The electrically charged droplets enter a vacuum chamber where the solvent is evaporated. Evaporation of solvent reduces the droplet size, thereby increasing the coulombic repulsion within the droplet. As the charged droplets get smaller, the excess charge within them causes them to disintegrate and release analyte molecules. The volatilized analyte molecules are then analyzed by mass spectrometry.
Any visible result of a procedure which is caused by the procedure itself and not by the entity being analyzed. Common examples include histological structures introduced by tissue processing, radiographic images of structures that are not naturally present in living tissue, and products of chemical reactions that occur during analysis.
A graphic means for assessing the ability of a screening test to discriminate between healthy and diseased persons; may also be used in other studies, e.g., distinguishing stimuli responses as to a faint stimuli or nonstimuli.
Method of tissue preparation in which the tissue specimen is frozen and then dehydrated at low temperature in a high vacuum. This method is also used for dehydrating pharmaceutical and food products.
Clotting time of PLASMA recalcified in the presence of excess TISSUE THROMBOPLASTIN. Factors measured are FIBRINOGEN; PROTHROMBIN; FACTOR V; FACTOR VII; and FACTOR X. It is used for monitoring anticoagulant therapy with COUMARINS.
Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example Cl2, SO2, NO2, CS2, ozone, mercury vapor, and various unsaturated compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A barbiturate that is used as a sedative. Secobarbital is reported to have no anti-anxiety activity.
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.
Improvement in the quality of an x-ray image by use of an intensifying screen, tube, or filter and by optimum exposure techniques. Digital processing methods are often employed.
A theorem in probability theory named for Thomas Bayes (1702-1761). In epidemiology, it is used to obtain the probability of disease in a group of people with some characteristic on the basis of the overall rate of that disease and of the likelihood of that characteristic in healthy and diseased individuals. The most familiar application is in clinical decision analysis where it is used for estimating the probability of a particular diagnosis given the appearance of some symptoms or test result.
An extraction method that separates analytes using a solid phase and a liquid phase. It is used for preparative sample cleanup before analysis by CHROMATOGRAPHY and other analytical methods.
Thin strands of transparent material, usually glass, that are used for transmitting light waves over long distances.
A rare metal element with a blue-gray appearance and atomic symbol Ge, atomic number 32, and atomic weight 72.63.
Computer-based representation of physical systems and phenomena such as chemical processes.
The narrow passage way that conducts the sound collected by the EAR AURICLE to the TYMPANIC MEMBRANE.
Elements of limited time intervals, contributing to particular results or situations.
Use of a device (film badge) for measuring exposure of individuals to radiation. It is usually made of metal, plastic, or paper and loaded with one or more pieces of x-ray film.
Chemical analysis based on the phenomenon whereby light, passing through a medium with dispersed particles of a different refractive index from that of the medium, is attenuated in intensity by scattering. In turbidimetry, the intensity of light transmitted through the medium, the unscattered light, is measured. In nephelometry, the intensity of the scattered light is measured, usually, but not necessarily, at right angles to the incident light beam.
The spontaneous transformation of a nuclide into one or more different nuclides, accompanied by either the emission of particles from the nucleus, nuclear capture or ejection of orbital electrons, or fission. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Drugs intended for human or veterinary use, presented in their finished dosage form. Included here are materials used in the preparation and/or formulation of the finished dosage form.
An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.
The chemical and physical integrity of a pharmaceutical product.
An increase in the rate of speed.
The condition in which reasonable knowledge regarding risks, benefits, or the future is not available.
The development and use of techniques and equipment to study or perform chemical reactions, with small quantities of materials, frequently less than a milligram or a milliliter.
The visual display of data in a man-machine system. An example is when data is called from the computer and transmitted to a CATHODE RAY TUBE DISPLAY or LIQUID CRYSTAL display.
Measuring instruments for determining the temperature of matter. Most thermometers used in the field of medicine are designed for measuring body temperature or for use in the clinical laboratory. (From UMDNS, 1999)
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.
A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.
Application of statistical procedures to analyze specific observed or assumed facts from a particular study.
Agents that emit light after excitation by light. The wave length of the emitted light is usually longer than that of the incident light. Fluorochromes are substances that cause fluorescence in other substances, i.e., dyes used to mark or label other compounds with fluorescent tags.
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.
Laboratory tests demonstrating the presence of physiologically significant substances in the blood, urine, tissue, and body fluids with application to the diagnosis or therapy of disease.
An examination of chemicals in the blood.
Materials used as reference points for imaging studies.
The specialty of ANALYTIC CHEMISTRY applied to assays of physiologically important substances found in blood, urine, tissues, and other biological fluids for the purpose of aiding the physician in making a diagnosis or following therapy.
X-ray image-detecting devices that make a focused image of body structures lying in a predetermined plane from which more complex images are computed.
A specialized field of physics and engineering involved in studying the behavior and properties of light and the technology of analyzing, generating, transmitting, and manipulating ELECTROMAGNETIC RADIATION in the visible, infrared, and ultraviolet range.
Making measurements by the use of stereoscopic photographs.
The study of chemical changes resulting from electrical action and electrical activity resulting from chemical changes.
The qualitative or quantitative estimation of the likelihood of adverse effects that may result from exposure to specified health hazards or from the absence of beneficial influences. (Last, Dictionary of Epidemiology, 1988)
The relationships of groups of organisms as reflected by their genetic makeup.
That portion of the electromagnetic spectrum usually sensed as heat. Infrared wavelengths are longer than those of visible light, extending into the microwave frequencies. They are used therapeutically as heat, and also to warm food in restaurants.
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)
Solid dosage forms, of varying weight, size, and shape, which may be molded or compressed, and which contain a medicinal substance in pure or diluted form. (Dorland, 28th ed)
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.
Methods for assessing flow through a system by injection of a known quantity of an indicator, such as a dye, radionuclide, or chilled liquid, into the system and monitoring its concentration over time at a specific point in the system. (From Dorland, 28th ed)

Validation of the Rockall risk scoring system in upper gastrointestinal bleeding. (1/3865)

BACKGROUND: Several scoring systems have been developed to predict the risk of rebleeding or death in patients with upper gastrointestinal bleeding (UGIB). These risk scoring systems have not been validated in a new patient population outside the clinical context of the original study. AIMS: To assess internal and external validity of a simple risk scoring system recently developed by Rockall and coworkers. METHODS: Calibration and discrimination were assessed as measures of validity of the scoring system. Internal validity was assessed using an independent, but similar patient sample studied by Rockall and coworkers, after developing the scoring system (Rockall's validation sample). External validity was assessed using patients admitted to several hospitals in Amsterdam (Vreeburg's validation sample). Calibration was evaluated by a chi2 goodness of fit test, and discrimination was evaluated by calculating the area under the receiver operating characteristic (ROC) curve. RESULTS: Calibration indicated a poor fit in both validation samples for the prediction of rebleeding (p<0.0001, Vreeburg; p=0.007, Rockall), but a better fit for the prediction of mortality in both validation samples (p=0.2, Vreeburg; p=0.3, Rockall). The areas under the ROC curves were rather low in both validation samples for the prediction of rebleeding (0.61, Vreeburg; 0.70, Rockall), but higher for the prediction of mortality (0.73, Vreeburg; 0.81, Rockall). CONCLUSIONS: The risk scoring system developed by Rockall and coworkers is a clinically useful scoring system for stratifying patients with acute UGIB into high and low risk categories for mortality. For the prediction of rebleeding, however, the performance of this scoring system was unsatisfactory.  (+info)

Performance and specificity of monoclonal immunoassays for cyclosporine monitoring: how specific is specific? (2/3865)

BACKGROUND: Immunoassays designed for the selective measurement of cyclosporin A (CsA) inadvertently show cross-reactivity for CsA metabolites. The extent and clinical significance of the resulting overestimation is controversial. A comprehensive assessment of old and new methods in clinical specimens is needed. METHODS: In a comprehensive evaluation, CsA was analyzed in 145 samples with the new CEDIA assay and compared with the Emit assay with the old and new pretreatments, the TDx monoclonal and polyclonal assays, the AxSYM, and HPLC. All samples were from patients with liver and/or kidney transplants. RESULTS: The CEDIA offered the easiest handling, followed by the AxSYM, which showed the longest calibration stability. The TDx monoclonal assay provided the lowest detection limit and the lowest CVs. The mean differences compared with HPLC were as follows: Emit, 9-12%; CEDIA, 18%; AxSYM, 29%; and TDx monoclonal, 57%. The CycloTrac RIA paralleled the Emit results. In contrast to the mean differences, substantial (>200%) and variable overestimations of the CsA concentration were observed in individual patient samples. Metabolic ratios, estimates of the overall concentrations of several cross-reacting metabolites (nonspecific TDx polyclonal/specific reference method), correlated with the apparent biases of the various monoclonal assays. Metabolic ratios varied up to 10-fold, which translated into biases for individual samples between -7% and +174%. The higher the cross-reactivity of an assay was, the higher was the range of biases observed. The interindividual differences markedly exceeded other factors of influence (organ transplanted, hepatic function). CONCLUSION: Because assay bias cannot be predicted in individual samples, substantially erratic CsA dosing can result. The specificity of CsA assays for parent CsA remains a major concern.  (+info)

TE671 cell-based ELISA for anti-acetylcholine receptor antibody determination in myasthenia gravis. (3/3865)

BACKGROUND: Acetylcholine receptor (AChR) from human muscles is the antigen used currently in radioimmunoprecipitation assays (RIPAs) for the determination of anti-AChR antibodies in the diagnosis of myasthenia gravis (MG). Our aim was to develop and validate an ELISA using TE671 cells as the source of AChR. METHODS: After TE671 cell homogenization, the crude AChR extract was used for plate coating. Anti-AChR antibodies were determined in 207 MG patients and in 77 controls. RESULTS: The mean intra- and interassay CVs (for two samples with different anti-AChR antibody concentrations) were 9.7% and 15.7%, respectively. Test sensitivity and specificity, for generalized MG, were 79.5% (95% confidence interval, 72.8-85.0%) and 96.1% (89.0-99.1%). The detection limit was 2 nmol/L. Anti-AChR antibody concentrations from 53 MG patients, as tested with our ELISA, showed good agreement with an RIPA with a mean difference (SD) of 1.0 (5.6) nmol/L. CONCLUSION: Our ELISA is a simple screening test for the diagnosis of MG and enables rapid and inexpensive patient follow-up.  (+info)

LocaLisa: new technique for real-time 3-dimensional localization of regular intracardiac electrodes. (4/3865)

BACKGROUND: Estimation of the 3-dimensional (3D) position of ablation electrodes from fluoroscopic images is inadequate if a systematic lesion pattern is required in the treatment of complex arrhythmogenic substrates. METHODS AND RESULTS: We developed a new technique for online 3D localization of intracardiac electrodes. Regular catheter electrodes are used as sensors for a high-frequency transthoracic electrical field, which is applied via standard skin electrodes. We investigated localization accuracy within the right atrium, right ventricle, and left ventricle by comparing measured and true interelectrode distances of a decapolar catheter. Long-term stability was analyzed by localization of the most proximal His bundle before and after slow pathway ablation. Electrogram recordings were unaffected by the applied electrical field. Localization data from 3 catheter positions, widely distributed within the right atrium, right ventricle, or left ventricle, were analyzed in 10 patients per group. The relationship between measured and true electrode positions was highly linear, with an average correlation coefficient of 0.996, 0.997, and 0.999 for the right atrium, right ventricle, and left ventricle, respectively. Localization accuracy was better than 2 mm, with an additional scaling error of 8% to 14%. After 2 hours, localization of the proximal His bundle was reproducible within 1.4+/-1.1 mm. CONCLUSIONS: This new technique enables accurate and reproducible real-time localization of electrode positions in cardiac mapping and ablation procedures. Its application does not distort the quality of electrograms and can be applied to any electrode catheter.  (+info)

European interlaboratory comparison of breath 13CO2 analysis. (5/3865)

The BIOMED I programme Stable Isotopes in Gastroenterology and Nutrition (SIGN) has focused upon evaluation and standardisation of stable isotope breath tests using 13C labelled substrates. The programme dealt with comparison of 13C substrates, test meals, test conditions, analysis techniques, and calculation procedures. Analytical techniques applied for 13CO2 analysis were evaluated by taking an inventory of instrumentation, calibration protocols, and analysis procedures. Two ring tests were initiated measuring 13C abundances of carbonate materials. Evaluating the data it was found that seven different models of isotope ratio mass spectrometers (IRMS) were used by the participants applying both the dual inlet system and the continuous flow configuration. Eight different brands of certified 13C reference materials were used with a 13C abundance varying from delta 13CPDB -37.2 to +2.0/1000. CO2 was liberated from certified material by three techniques and different working standards were used varying from -47.4 to +0.4/1000 in their delta 13CPDB value. The standard deviations (SDs) found for all measurements by all participants were 0.25/1000 and 0.50/1000 for two carbonates used in the ring tests. The individual variation for the single participants varied from 0.02 /1000 (dual inlet system) to 0.14/1000 (continuous flow system). The measurement of the difference between two carbonates showed a SD of 0.33/1000 calculated for all participants. Internal precision of IRMS as indicated by the specifications of the different instrument suppliers is < 0.3/1000 for continuous flow systems. In this respect it can be concluded that all participants are working well within the instrument specifications even including sample preparation. Increased overall interlaboratory variation is therefore likely to be due to non-instrumental conditions. It is possible that consistent differences in sample handling leading to isotope fractionation are the causes for interlaboratory variation. Breath analysis does not require sample preparation. As such, interlaboratory variation will be less than observed for the carbonate samples and within the range indicated as internal precision for continuous flow instruments. From this it is concluded that pure analytical interlaboratory variation is acceptable despite the many differences in instrumentation and analytical protocols. Coordinated metabolic studies appear possible, in which different European laboratories perform 13CO2 analysis. Evaluation of compatibility of the analytical systems remains advisable, however.  (+info)

The length and eruption rates of incisor teeth in rats after one or more of them had been unimpeded. (6/3865)

The eruption rate and length of all four incisor teeth in rats were measured under ether anaesthesia by recording the position of marks on their labial surfaces at 2-day intervals, using calibrated graticules in microscope eyepieces. The rats were divided into four groups and either a lower, an upper, both a lower and an upper, or no incisors were unimpeded. This paper describes the changes when the unimpeded incisors returned to the occlusion. Neither the unimpeded nor the impeded incisors simply returned to control values immediately the period of unimpeded eruption ended, but showed transient changes in their lengths and eruption rates. The results confirm that eruption rates are determined by the sum of the lengths of the lower and upper incisors, rather than by their own lengths, with longer teeth erupting more slowly. Specifically, restoring the bevel to the incisors did not slow their eruption below normal impeded rates. The slowing of the eruption of the longer of two adjacent incisors was related to the length differences of the incisors in the same jaw, not to the sum of the differences in both jaws. Contact with the contralateral incisor in the opposite jaw slowed the eruption of an incisor more than contact with the ipsilateral incisor.  (+info)

Fluorimetric determination of aluminum traces in hemodialysis solutions using Mordant Red 19. (7/3865)

A sensitive and accurate method for the spectrofluorimetric determination of trace levels of aluminum in hemodialysis solutions using Mordant Red 19 as the complexation reagent has been developed. The optimal experimental conditions for the concentration of fluorimetric reagent, pH, temperature, and the specific type of matrix are reported. The emission of the fluorescent metal chelate was measured at 555 nm, excitation at 478 nm. Linearity between emission intensity and aluminum concentration was found in the 2-20 ppb range in standard aluminum solutions. Limit of detection was 0.4 ppb. The aluminum amounts in some commercial hemodialysis solutions were determined by means of the extrapolation method. The proposed method proved to be suitable in terms of sensitivity and accuracy for the determination of aluminum in dialysis fluids.  (+info)

Determination of tin, vanadium, iron, and molybdenum in various matrices by atomic absorption spectrometry using a simultaneous liquid-liquid extraction procedure. (8/3865)

An atomic-absorption spectrometric method is described for the determination of tin, vanadium, iron, and molybdenum in two certified reference materials, food samples, and petroleum crude. After treatment with acids, these elements are separated from matrix elements by simultaneous solvent extraction of 5,5'-methylenedisalicylohydroxamic acid complexes from HCl/NaClO4 solution into an isobutyl methyl ketone/tributyl phosphate solution. The detection limits range from 0.018 to 0.19 microg/mL (n = 3), and the relative standard deviations do not exceed 2.0% at levels of 0.5, 0.6, 2.0, and 7.0 microg/mL of Fe, Mo, V, and Sn, respectively. The method is selective and suffers only from interference by Zr(IV), Ti(IV), Th(IV), W(VI), PO4(3-), and F-.  (+info)

Accelerometers are used in a variety of applications ranging from navigation systems to stand-alone tests. In each application, the accuracy of the accelerometer is crucial. There are various calibration techniques that range in precision, yet each apparatus devised to calibrate the accelerometer is quite complex. A calibration method of less complexity is desired to calibrate stand-alone accelerometers that require moderate accuracy. One stand-alone accelerometer, the X16-1D, was used to investigate calibration techniques. Six calibration techniques were investigated to determine an efficient method to calibrate a stand-alone accelerometer. Each method provided a different acceleration component that was modeled by theoretical equations. For all six methods, test variables were established to determine the accelerometers ability to track acceleration. Each test was compared to the theoretical acceleration model to determine the effectiveness of the calibration technique. The overall errors of each
A novel method is introduced for developing calibration models for the spectroscopic measurement of chemical concentrations in an aqueous environment. To demonstrate this matrix-enhanced calibration procedure, we developed calibration models to quantitate glucose and glutamine concentrations in an insect cell culture medium that is a complex mixture of more than 20 components, with three components that manifest significant concentration changes. Accurate calibration models were generated for glucose and glutamine by using a calibration data set composed of 60 samples containing the analytes dissolved in an aqueous buffer along with as few as two samples of the analytes dissolved in culture medium. Standard errors of prediction were 1.0 mM for glucose and 0.35 mM for glutamine. The matrix-enhanced method was also applied to culture medium samples collected during the course of a second bioreactor run. Addition of three culture medium samples to a buffer calibration reduced glucose prediction errors from
Two multivariate calibration methods are compared for the simultaneous chromatographic determination and separation of Sulfamethoxazole (SMX) and Phthalazine (PHZ) by High Performance Liquid Chromatography (HPLC). Multivariate calibration techniques such as Classical Least Squares (CLS) and Inverse Least Squares (ILS) were introduced into HPLC to determine the quantification by using UV detector at 235, 250, 260 and 270 nm. Sixteen binary mixtures of SMX and PHZ as calibration set and eight binary mixtures as prediction set were used. Results show that, Relative Errors of Prediction (REP) of CLS and ILS for SMX and PHZ were 0.17%, 0.63% and o.15%, 0.56%, respectively.
Does the 80A03 require any internal calibration? No, the 80A03 requires no internal calibration. However, after installing any electrical sampling module, the compensation procedure should be run. The
We describe a new resist model calibration procedure and its implementation in LithoCruiserTM. In addition to the resist calibration, LithoCruiser is used to perform simultaneous optimization for numerical aperture (NA), mask OPC, and illumination profile with built-in manufacturing constraints for ASML illumination diffractive optical elements (DOE). This calibration procedure uses a global optimization algorithm for resist parameter tuning, matching the simulated and measured 2D resist contours at a user-defined multiple CD sampling across the selected developed 2D resist patterns. Using lumped parameter type resist models and vector high-NA simulation engine, this resist calibration procedure showed an excellent calibration capability of max CD error range < ±4nm for the CPL 70nm DRAM patterns. Calibration results for CPL 130nm contact hole patterns are also included in this manuscript. Dependency of the calibrated model parameters on lithography process (i.e., Quasar, C-Quad illumination ...
An advanced wavelength calibration process with higher wavelength accuracy is developed based on the conventional calibration method of micro-spectrometers with multichannel detectors. The deficiencies of the conventional method in acquiring sufficient well-spaced and adequately accurate wavelength-pixel data for calibration are analyzed. And three steps are added to the conventional method before the final pixel-wavelength fit is carried out. First, segmented data collection is carried out to ensure sufficient well-spaced lines for calibration. Second, sub-pixel analysis is executed to increase sampling rate. Third, peak fit is implemented to acquire more accurate central wavelength positions. The simulated experiment was based on a compact spectrometer with a crossed Czerny-Turner optical design. Mercury and Argon line spectra are used as wavelength standards. A linear image sensor with 1024 pixels each 25μm in width is used as the detector. In the new calibration process the whole spectral ...
Closes an open external calibration session. LabVIEW NXG does not support FPGA devices Not supported in VIs that run in a web application DAQmx Close External :/lvdaqmx.chm::/mxcloseextcal.html calHandle in calHandle in is a reference to the calibration session that you creat
Nowadays, a large number of chiral analyses are needed, simple and rapid methods for the determination of the enantiomeric composition in pharmaceutical products should be developed. The fluoxetine belongs to the most prescribed antidepressant chiral drugs and its enantiomers have a different duration of serotonin inhibition. This study presents cheap and fast alternative to traditional chiral techniques for the determination of the fluoxetine enantiomeric composition by the combination of UV/VIS spectrometry and multivariate calibration. The chiral recognition of the fluoxetine was based on the creating of the diastereomeric complexes with α- and β- cyclodextrin. Multivariate calibration methods, including principal component regression (PCR) and partial least square method (PLS), were used for spectral data evaluation. Small differences in results between eachcyclodextrin and both calibration models were obtained by multivariate calibration. PLS model for determination of the enantiomeric ...
The IIP2 requirement in fully integrated direct-conversion receivers using FDD duplexing is prohibitively high and demands the use of an external filter in order to attenuate the leakage from the transmitter. This paper presents a digital calibration technique for passive CMOS down-converters that allows a direct conversion receiver achieve the requirements without external filtering. A Least-Mean-Square optimization algorithm is used in order to reduce the low-frequency second-order intermodulation product. The algorithm controls the digital calibration structures at the biasing of the passive mixer and adapts them until the second order intermodulation drops below the noise level. The method is tested by calibrating a 1.2-V 65nm CMOS passive mixer targeting UMTS/LTE applications at several corner conditions including worst case mismatches in the switching pairs.. ...
A new method for performing a full two-port s-parameter calibration in free-space is presented. The proposed calibration technique computes the error coeff
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Starts an external calibration session on a device. LabVIEW NXG does not support FPGA devices Not supported in VIs that run in a web application DAQmx Initialize External |helpdir|:/lvdaqmx.chm::/mxinitextcal.html device in device in is the name as configured in MAX of the device to w
Manufacturer of Imported Weighing Balances - Analytical Balance With Internal Calibration, Analytical Balance With External Calibration, Economic Compact Balance and Halogen Moisture Balance offered by Safire Scientific Company, Coimbatore, Tamil Nadu.
Calibration Criteria. Note: Do not apply the brake pedal during the brake pedal position (BPP) sensor calibration procedure. Any movement of the brake pedal during this procedure will cause the calibration procedure to fail. If this occurs, the sensor calibration must be repeated.. Brake pedal position (BPP) sensor calibration must be performed after the sensor or body control module (BCM) have been serviced. The calibration procedure will set the sensor home value. This value is used by the BCM to determine the action of the driver applying the brake system and to provide this information to the vehicle subsystems via serial data.. Calibration Procedure. ...
TY - JOUR. T1 - Geometric calibration of the SND detector electromagnetic calorimeter. AU - Korol, A. A.. AU - Melnikova, N. A.. PY - 2017/3/1. Y1 - 2017/3/1. N2 - This paper presents the design, implementation and validation of the software alignment procedure used to perform geometric calibration of the electromagnetic calorimeter with respect to the tracking system of the SND detector which is taking data at the VEPP-2000 e+e− collider (BINP, Novosibirsk). This procedure is based on the mathematical model describing the relative calorimeter position. The parameter values are determined by minimizing a χ2 function using the difference between particle directions reconstructed in these two subdetectors for e+e−→e+e− scattering events. The results of the calibration applied to data and MC simulation fit the model well and give an improvement in particle reconstruction. They are used in data reconstruction and MC simulation.. AB - This paper presents the design, implementation and ...
Improved Calibration vector network analyzer calibration method of storing sparse data, using the measurements from each of the vector network analyzer calibration data sparse system error interpolated data, and system data and uncorrected errors from each frequency measurement measurement data to create measurement data calibration. It may be measured by the measuring frequency range greater than the specified frequency range of calibration every N th frequency step, or by the measurement of the calibration of each frequency step of the frequency range and the length measurement data obtained by compression, to produce calibration data sparse. Interpolation algorithm may be used by fitting a polynomial curve fitting parameters such as curve algorithm.
The need for custom footwear among the consumers is growing every day. Serious research is being undertaken with regards to the fit and comfort of the footwear. The integration of scanning systems in the footwear and orthotic industries have played a significant role in generating 3D digital representation of the foot for automated measurements from which a custom footwear or an orthosis is manufactured. The cost of such systems is considerably high for many manufacturers due to their expensive components, complex processing algorithms and difficult calibration techniques. This thesis presents a fast and robust calibration technique for a low-cost 3D laser scanner. The calibration technique is based on determining the mathematical relationship that relates the image coordinates to the real world coordinates. The relationship is determined by mapping the known real world coordinates of a reference object to its corresponding image coordinates by multivariate polynomial regression. With the ...
AVL CRETA 5™ is a calibration data lifecycle management system designed for the calibration of all vehicle control units. It supports and facilitates your agile calibration process by helping engineers perform their tasks faster and more efficiently. Support Your Agile Calibration Process ...
Ohaus Pioneer PA4202C precise scale weighs up to 4200 grams in 0.01 gram increments and has internal motorized calibration. A simple press of the CAL keypad starts the internal calibration.
Zhang model [two][3] can be a camera calibration process that makes use of traditional calibration procedures (identified calibration factors) and self-calibration methods (correspondence concerning the calibration details when they are in different positions). To execute an entire calibration from the Zhang technique at least three different pictures of your calibration focus on/gauge are expected, possibly by relocating the gauge or even the digital camera alone ...
The device being calibrated must be running a public release of iOS 10.0 or later. A device running iOS 9 or earlier will be irreparably damaged by the fixture if it is not updated first. It must be awake on the lock screen or the home screen prior to beginning the procedure, and have at least 20% battery remaining. Additionally, the technician must have a Genius Room iMac running the latest version of 3DTouchCal software, and a 3D Touch Calibration Fixture, connected to the iMacs Ethernet port. Often called Horizon machines due to their codename, 3D Touch Calibration Fixtures have the ability to calibrate the display, proximity sensor, and pressure sensors on iPhone 6s or later. They can also pair new Touch ID buttons to a Secure Enclave Processor. They are not to be confused with Display Calibration Fixtures, which are used with iPhone 5 through iPhone 6 Plus during the Display Calibration Procedure. Finally, the device to be calibrated must be wiped clean with a lint-free microfiber cloth ...
The present invention provides a method of calibrating a spectroscopic device for providing a non-invasive measurement of an analyte level in a sample. The method comprises the steps of: (a) providing a plurality of calibration algorithms; (b) taking a set of non-invasive measurements on said sample with said spectroscopic device; (c) calculating a predicted set of analyte levels for each of the calibration algorithms in response to the set of non-invasive measurements, each of the predicted sets of analyte levels being characterized by a variability range, a slope, an R 2 (a square of the correlation between said set of non-invasive measurements and said predicted set of analyte levels), and a standard error of prediction; and (d) selecting an appropriate calibration algorithm by using a suitability score based on the variability range, the slope, the R2 an the standard error of prediction for each of the predicted sets of analyte levels. A method of generating suitable calibration algorithms in step
Sartorius Entris Precision Balances - PROMO Internal Calibration; Capacity: 420g Balances, Scales and Weighing:Laboratory Balances:Analytical Balances
Ohaus AX5202 Adventurer precision balance with 5200 gram capacity, 0.01 gram readability and 18 other weighing units. Internal calibration, 9 modes and more.
Adam Equipment SAB 314i Solis Analytical balance with 310g capacity, 0.1mg readability. Features internal calibration, percent weighing, formulation, and more.
Adventurer Pro Analytical Balances, With Internal Calibration, Ohaus - Model AV212C - Each : dimensions: 22 x 8.5 x 30 (811/16 x 33/8 x 1113/16) -|-
Many anisotropic phenomenological yield functions have been proposed in the literature in which their predictive capabilities strongly depend on the experimental calibration data as well as the calibration procedure to identify the anisotropy parameters. In this paper, emphasis is placed upon the experimental and numerical calibration procedure of anisotropic yield functions in the region of shear loading (zero hydrostatic stress with equal and opposite in-plane principal strains and stresses). Conventional anisotropic calibration procedures are shown to introduce non-physical artefacts into constitutive models which manifest as a non-zero hydrostatic stress or through-thickness strains generated under in-plane shear stress that violate the definition of the shear loading condition. To overcome this issue, a new physically necessary constraint is applied on the plastic potential to enforce equal and opposite principal strains in the shear state and correct the shear region of anisotropic yield ...
A method and apparatus for measuring the concentration of an analyte present in a biological fluid is disclosed. The method includes the steps of applying NIR radiation to calibration samples to produce calibration data, analyzing the calibration data to identify and remove outliers, constructing a calibration model, collecting and analyzing unknown samples to identify and remove outliers, and predicting analyte concentration of non-outliers from the calibration model. Analysis of the calibration data includes data pretreatment, data decomposition to remove redundant data, and identification and removal of outliers using generalized distances. The calibration model may utilize principal component regression, partial least squares, multiple linear regression, or artificial neural networks, and reduction using principal component analysis or partial least squares scores. Unknown sample data is analyzed using data pretreatment followed by projection into the calibration model space, and identification and
Electronic balances are precision instruments and are very susceptible to changes in room temperature. Sensitivity must be calibrated whenever required since changes in room temperature influence weight measurement values, which are not supposed to change. This is why the balance captures changes in room temperature that affect sensitivity and automatically starts calibration using built-in weights. This ensures that sensitivity is constant at all times, allowing the operator to concentrate on measurement tasks without having to worry about sensitivity calibration.. The balance starts calibration using built-in weights at preset times of the day. If you set calibration times before important measurements (e.g. before starting work in the morning, or during the lunch or evening break), the balance will automatically start calibration when the preset time is reached. Consistent measurement is possible without worrying about sensitivity calibration.. The balance incorporates motor-driven ...
A visual sensor calibration method of calibrating of a visual sensor in a robot system. A pattern plate is provided on an arm of a robot, and the calibration pattern data (CPDr) of the pattern plate on robots base coordinates is sent from a robot controller to a visual sensor controller. The visual sensor controller picks up an image of the pattern plate by a camera to obtain calibration pattern data (CPDc). The calibration data (CD) is obtained from the calibration pattern data (CPDr) and the calibration pattern data (CPDc), to thereby calibrate the visual sensor.
The development of a viable self-calibration approach for use with non-metric cameras was investigated. Both computer generated and actual test camera data were generated to determine the effectiveness of the math model and computer program. A twenty-seven parameter bundle adjustment routine was proposed because of its versatility and compatible use in an existing aerotriangulation package. For the camera and test configuration considered, the focal length was recovered to within two percent, and the principal point location was recovered to wi thin O. 3 to twelve percent. When the computer generated data was used, the focal length and principal point offset were recovered to within 0.2 percent.. Modeling and software has been made available for a future comparative study between the self-calibration and Direct Linear Transformation adjustment parameters. The self-calibration modeling and former Direct Linear Transformation modeling software is a promising tool for mensuration tests and ...
Article Sensitivity of the performance of a conceptual rainfall–runoff model to the temporal sampling of calibration data. The effect of the time step of calibration data on the performance of a hydrological model is examined through a numeric...
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Calibration in atomic-absorption spectrometry is achieved by means of a concentration--gradient chamber using a single concentrated standard solution. Calibration is rapid and extends over the entire working concentration range of the analyte, irrespective of the shape of the conventionally obtained calibration curve. No curve-fitting approximations are involved. With well-designed apparatus, deviations are less than 1%.
Utilizing multiple instructors with deep expertise in dimensional calibration methods and practice, this course is unlike any other calibration course. With hands-on exercises, the first day of this course covers key principles that apply to all calibration situations, such as selection of calibration methods, use of appropriate reference standards, reporting of results, and traceability. Students will perform actual calibrations, learn and practice techniques to improve accuracy of results, and understand how the general principles learned in class can be extended to the development of other calibration methods. Day two of the course moves into a series of demonstrations and hands-on practice of various calibrations, and by the end of day two, the students will have covered all of the most common dimensional calibrations, including micrometers, calipers, dial indicators, test indicators, digital indicators, height gages, and micrometer standards. Day three provides for opportunities to cover ...
Utilizing multiple instructors with deep expertise in dimensional calibration methods and practice, this course is unlike any other calibration course. With hands-on exercises, the first day of this course covers key principles that apply to all calibration situations, such as selection of calibration methods, use of appropriate reference standards, reporting of results, and traceability. Students will perform actual calibrations, learn and practice techniques to improve accuracy of results, and understand how the general principles learned in class can be extended to the development of other calibration methods. Day two of the course moves into a series of demonstrations and hands-on practice of various calibrations, and by the end of day two, the students will have covered all of the most common dimensional calibrations, including micrometers, calipers, dial indicators, test indicators, digital indicators, height gages, and micrometer standards. Day three provides for opportunities to cover ...
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The ZSSC3122 Mass Calibration System provides the hardware needed for simultaneous configuration, calibration and evaluation of multiple ZSSC3122 Capacitive Sensor Signal Conditioner (SSC) ICs. The users PC can communicate via the SSC Communication Board with multiple ZSSC3122 ICs (DUTs) mounted on either the users modules or ZSSC3122 Mass Calibration Reference Boards, which are connected through the Mass Calibration Board (MCB). Each MCB allows connection of up to 24 DUTs. The system can operate with up to 8 MCBs, allowing connection of up to 192 DUTs. The Evaluation Kit Software is available on-line for free download.. For further information and support for the SSC Communication Board, visit the SSC-CB product page.. Additional boards can be ordered separately. To enable product comparisons, this modular kit is compatible with other select IDT devices. Contact your local sales representative for more information.. ...
An identification of the model parameters for a parallel cable-driven robot is performed by using both a calibration and a self-calibration approach. The manipulator studied is based on a parallel architecture having 8 cables to control the 6 degrees of freedom of its mobile platform so that the mobile platform is fully constrained by the cables. Under some hypotheses on cable properties, the interest of redundancy in actuation is exploited to self-calibrate by using proprioceptive sensors. This approach is compared to the difficulties to implement a calibration process. Additionally, advanced tools and algorithmic improvements are presented to perform the parameter identification. A complete experimentation validates the robot accuracy improvement after calibration or self-calibration. We show that the basic hypotheses on cable properties are verified. Moreover, the investment in terms of time and cost to obtain the external measurements for calibration process does not bring better results and does
Fisher Scientific - OHAUS Adventurer Precision Balances with External Calibration - Strikes the ideal balance between inventive features and functional, uncomplicated weighing capabilities.
Multivariate Calibration Harald Martens, Chemist, Norwegian Food Research Institute, Aas, Norway and Norwegian Computing Center, Oslo, Norway Tormod Næs, Statistician, Norwegian Food Research Institute, Aas, Norway The aim of this inter-disciplinary book is to present an up-to-date view of multivariate calibration of analytical instruments, for use in research, development and routine laboratory and process operation. The book is intended to show practitioners in chemistry and technology how to extract the quantitative and understandable information embedded in non-selective, overwhelming and apparently useless measurements by multivariate data analysis. Multivariate calibration is the process of learning how to combine data from several channels, in order to overcome selectivity problems, gain new insight and allow automatic outlier detection. Multivariate calibration is the basis for the present success of high-speed Near-Infrared (NIR) diffuse spectroscopy of intact samples. But the ...
Two important aspects of internal calibration of polarimetric synthetic aperture radar are discussed, i.e., system gain calibration and individual transmit
The transfer of a multivariate calibration model for quantitative determination of diethylene glycol (DEG) contaminant in pharmaceutical-grade glycerin between five portable Raman spectrometers was accomplished using piecewise direct standardization (PDS). The calibration set was developed using a multi-range ternary mixture design with successively reduced impurity concentration ranges. It was found that optimal selection of calibration transfer standards using the Kennard-Stone algorithm also required application of the algorithm to multiple successively reduced impurity concentration ranges. Partial least squares (PLS) calibration models were developed using the calibration set measured independently on each of the five spectrometers. The performance of the models was evaluated based on the root mean square error of prediction (RMSEP), calculated using independent validation samples. An F-test showed that no statistical differences in the variances were observed between models developed on ...
Camera calibration plays a critical role in 3D computer vision tasks. The most commonly used calibration method utilizes a planar checkerboard and can be done nearly fully automatically. However, it requires the user to move either the camera or the checkerboard during the capture step. This manual operation is time consuming and makes the calibration results unstable. In order to solve the above problems caused by manual operation, this paper presents a full-automatic camera calibration method using a virtual pattern instead of a physical one. The virtual pattern is actively transformed and displayed on a screen so that the control points of the pattern can be uniformly observed in the camera view. The proposed method estimates the camera parameters from point correspondences between 2D image points and the virtual pattern. The camera and the screen are fixed during the whole process; therefore, the proposed method does not require any manual operations. Performance of the proposed method is evaluated
This article adresses the hyperbolic catadioptric camera calibration matter.An automatic calibration process has been developped,thus no user intervention is required to perform the camera intrinsic and extrinsic parameters estimation. This process uses a specific calibration pattern built to fit the geometry of the sensor.The pattern features are really easy to identify and allow a robust camera calibration.The performances of the algorithm are illustrated by some examples.. Résumé. Cet article présente une procédure détalonnage pour les caméras panoramiques catadioptriques utilisant un miroir hyperbolique de révolution. Lalgorithme que nous avons développé permet un étalonnage automatique (sans intervention dun opérateur) des paramètres intrinsèques et extrinsèques de la caméra. Il utilise une mire détalonnage particulière,adaptée à la géométrie du capteur. Cette mire contient des formes particulièrement simples à détecter et permet un étalonnage robuste du ...
We propose a computational calibration method for optical tomography. The model of the calibration scheme is based on the rotation symmetry of source and detector positions in the measurement setup. The relative amplitude losses and phase shifts at the optic fibers are modeled by complex-valued coupling coefficients. The coupling coefficients can be estimated when optical tomography data from a homogeneous and isotropic object are given. Once these coupling coefficients have been estimated, any data measured with the same measurement setup can be corrected for the relative variation in the data due to source and detector losses. The final calibration of the data for the source and detector losses and the source calibration between the data and the forward model are obtained as part of the initial estimation for reconstruction. The calibration method was tested with simulations and measurements. The results show that the coupling coefficients of the sources and detectors can be estimated with ...
Camera calibration may refer to: Camera resectioning, which is called also geometric camera calibration Color mapping, which is a method for photometric camera calibration Radiometric ...
Camera calibration is one of the fundamental photogrammetric tasks. The standard procedure is to apply an iterative adjustment to measurements of known control points. The iterative adjustment needs initial values of internal and external parameters. In this paper we investigate a procedure where only one parameter - the focal length is given a specific initial value. The procedure is validated using the freely available Damped Bundle Adjustment Toolbox on five calibration data sets using varying narrow- and wide-angle lenses. The results show that the Gauss-Newton-Armijo and Levenberg-Marquardt-Powell bundle adjustment methods implemented in the toolbox converge even if the initial values of the focal length are between 1/2 and 32 times the true focal length, even if the parameters are highly correlated. Standard statistical analysis methods in the toolbox enable manual selection of the lens distortion parameters to estimate, something not available in other camera calibration toolboxes. A ...
Fisher Scientific™ Fisher Scientific™ Traceable™ Conductivity Calibration Standards Certified Reference Material (CRM) NIST Individual bottle...
Hi, Im a graduate student in Curt Franks group in Chemical Engineering. I am in charge of maintaining and calibrating our DI Nanoscope AFMs. I was wondering if anyone has calibration standards we could borrow for a day or two. Specifically, wed like to find high accuracy vertical calibration standards. We currently have vertical standards of SiO2 steps with +/- 1nm accuracy step heights, but wed like to calibrate our scanners to even higher accuracy (down to angstroms) since we have features on the order of a few nanometers that wed like to characterize. If you have standards we might be able to borrow (or advice or suggestions), please contact me at this email or at 650-723-9140 and it would be greatly appreciated! Thanks! Lisa Hwang ...
250ml Refractometer & Hydrometer Calibration Standard - Brightwell Aquatics 1.0264 Specific Gravity 1.3394 Refractive Index 35 ppt Salinity 53 uS/cm at 25 deg c250ml Brightwell Aquatics Aquarium Reagents Refractometer & Hydrometer Calibration Standard is designed to provide an accurate reference
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): In order to address the difficulty of arranging large calibration objects and the low mea-surement accuracy of small calibration objects in traffic accident scene photogrammetry, a photogrammetric method based on a composite of small calibration objects is proposed. Several small calibration objects are placed around the traffic accident scene, and the co-ordinate system of the composite calibration object is given based on one of them. By maintaining the relative position and coplanar relationship of the small calibration objects, the local coordinate system of each small calibration object is transformed into the coordi-nate system of the composite calibration object. The two-dimensional direct linear trans-formation method is improved based on minimizing the reprojection error of the calibration points of all objects. A rectified image is obtained using the nonlinear optimization method. The increased accuracy of traffic
Among the world’s elite flow calibration facilities, the Badger Meter Flow Dynamics primary and secondary standard calibration laboratories, located in Racine, WI, calibrate most flow meters from any manufacturer. The Flow Dynamics primary standard calibration facility offers superior liquid and gas calibration uncertainties, as documented by the National Voluntary Laboratory Accreditation Program (NVLAP*), Lab Code 200668-0, Scope of Accreditation to ISO/IEC 17025:2005 and NIST Handbook 150. Effective immediately, please send products for calibration to: Badger Meter, Inc. Attn: Calibration Lab 8635 Washington Ave Racine, WI 53406
MESA Specialty supplies petrochemical and refinery gas calibration standards, including natural gas pipeline calibration gas standards. Also available are polymer, sulphur,butadiene gas standard and liquid calibration mixtures.
Image: Michal Marcol / Teddington, UK -?? A two day training course on humidity measurement and calibration, covering measurement techniques, terms and definitions;,calculations, traceability and calibration and hands-on laboratory sessions.. The course will open with an introductory session on humidity terms and definitions followed by talks that will cover the necessary background to the subject with full course notes provided. A tour of the NPL Humidity laboratory, plus hands-on sessions, will give a practical introduction to humidity measurement and calibration techniques.. This will be reinforced with talks on uncertainties, traceability and accreditation.. To view the programme, click here for the current/most recent course flyer.. All participants will receive a certificate of attendance.. This course is suitable for technicians and technical managers closely concerned with humidity measurement and calibration.. The course will be given by members of the NPL ...
In a computer tomography system, a flexible calibration phantom is utilized simultaneously with analysis of a patient to ensure accuracy of imagry and to facilitate interpretation of tomographs created. The flexible calibration phantom is preferably placed directly upon a patient between a radiation source and a radiation detector. It includes two solid and flexible samples of reference materials, each having a substantially uniform density, and a solid and flexible encasement surrounding the samples of reference material. The encasement has a substantially uniform density different than that of each of the samples of reference material, and the combination provides suitable reference points for proper analysis of tomographs obtained.
A system and method for radar detection and calibration. By measuring the true range of a calibration target on entry to the radars detection zone, the actual detection capability of the radar in current atmospheric conditions with the actual radar can be determined. The radar system is also adapted to determine a sensed position at a sensed time of a target in the radars detection zone. A calibration target, preferably an unmanned air vehicle (UAV), includes a position device for determining the actual position of the calibration target. A calibration device communicates with the radar system and the calibration target and receives the sensed and actual positions of the calibration target. The calibration device calculates the error between the sensed position and the actual position and adjusts the radar system to minimize the error. The target may include a signal augmentation device to augment the radar cross-section of the target to replicate the radar cross-sections of targets of various types.
A system and method for radar detection and calibration. By measuring the true range of a calibration target on entry to the radars detection zone, the actual detection capability of the radar in current atmospheric conditions with the actual radar can be determined. The radar system is also adapted to determine a sensed position at a sensed time of a target in the radars detection zone. A calibration target, preferably an unmanned air vehicle (UAV), includes a position device for determining the actual position of the calibration target. A calibration device communicates with the radar system and the calibration target and receives the sensed and actual positions of the calibration target. The calibration device calculates the error between the sensed position and the actual position and adjusts the radar system to minimize the error. The target may include a signal augmentation device to augment the radar cross-section of the target to replicate the radar cross-sections of targets of various types.
The increase in the concentration of carbon dioxide (CO2) in the atmosphere has led the scientific community to investigate the adverse effects on humanity and nature, including the greenhouse effect, which contributes to global warming and can lead to climate change, besides the risks associated with human health. Due to the importance of metrological issues in the current scenario, the Laboratory of Gas Analysis (Lanag) of the National Institute of Metrology, Quality and Technology (Inmetro) is developing the methodology of preparation of such primary standard gas mixtures through gravimetry. For the preparation of these standards, an analysis verification step is necessary, carried out by means of an analytical technique of comparison, at low levels of concentration, by cavity ringdown (CRDS) and by gas chromatography using a flame ionization detector coupled to a methaniser catalyst (GC-FIDmeth). This work presents the method validation of both methodologies developed to analyze a range of
EOS satellite instruments operating in the visible through the shortwave infrared wavelength regions (from 0.4 micrometer to 2.5 micrometer) are calibrated prior to flight for radiance response using integrating spheres at a number of instrument builder facilities. The traceability of the radiance produced by these spheres with respect to international standards is the responsibility of the instrument builder, and different calibration techniques are employed by those builders. The National Aeronautics and Space Administrations (NASAs) Earth Observing System (EOS) Project Science Office, realizing the importance of preflight calibration and cross-calibration, has sponsored a number of radiometric measurement comparisons, the main purpose of which is to validate the radiometric scale assigned to the integrating spheres by the instrument builders. This paper describes the radiometric measurement comparisons, the use of stable transfer radiometers to perform the measurements, and the measurement ...
In analytical chemistry, a calibration curve is a general method for determining the concentration of a substance in an unknown sample by comparing the unknown to a set of standard samples of known concentration.[1] A calibration curve is one approach to the problem of instrument calibration; other approaches may mix the standard into the unknown, giving an internal standard. The calibration curve is a plot of how the instrumental response, the so-called analytical signal, changes with the concentration of the analyte (the substance to be measured). The operator prepares a series of standards across a range of concentrations near the expected concentration of analyte in the unknown. The concentrations of the standards must lie within the working range of the technique (instrumentation) they are using.[2] Analyzing each of these standards using the chosen technique will produce a series of measurements. For most analyses a plot of instrument response vs. concentration will show a linear ...
0068] In accordance with another aspect of the present invention, there is provided a method of performing internal diameter measurements using a probe apparatus as described herein and a dent calibration standard. A specific example of such a method comprises the following steps: [0069] 1. Setup and prepare the eddy current instrumentation at the location of the inspection; [0070] 2. Connect the probe and verify it is operating correctly; [0071] 3. Insert the probe into the dent calibration standard; [0072] 4. While ensuring that both modules are away from any calibration references, null the probe to balance the electronic bridge; [0073] 5. Review the calibration reference data from the calibration standard and adjust the dent signals so that they deflect vertically as the probe passes over a dent; [0074] 6. Push the probe entirely through the dent calibration standard; [0075] 7. While pulling at a constant speed, record the data as the probe is pulled through and out of the dent calibration ...
Fingerprint Dive into the research topics of Retrospectively supervised click decoder calibration for self-calibrating point-and-click brain-computer interfaces. Together they form a unique fingerprint. ...
are the averages of the x and y measurements and S denotes summation over all n observations. When the points lie exactly on a straight line of positive slope R = +1; when the points lie exactly on a straight line of negative slope R = 1. Mathematically R lies between +1 and 1. Maybe this fact has given rise to the idea that R being near ± 1 indicates a linear relationship between the x and y variables. However values of R which can be considered large can come from markedly non-linear relationships.12,13 Although it has been discussed by many authors, in practice analysts misunderstand this concept. For analytical processes considering instrumental responses the calibration function is usually obtained by means of a calibration experiment; the observations usually represent the result of a physical measurement that must be converted into the analytical result.14 The model equation used is the straight line equation, Yi = b + aXi + ei (with i =1 to n), where Yi is the response variable, Xi the ...
The Testing and Calibration Pillar in KENAS provides accreditation for the recognition of the technical competence of a testing and calibration laboratory for a specific task following ISO/IEC 17025:2005.. KENAS testing and calibration has been established with the objective to provide Government, Industry and Private laboratories in general with a scheme for third-party assessment of the quality and technical competence of testing and calibration laboratories to carry out specific testing, measurements and calibrations. Government of Kenya has authorized KENAS as the sole accreditation body for Testing and Calibration laboratories.. Laboratory Accreditation. The concept of Laboratory Accreditation was developed to provide a means for third-party attestation of the competence of laboratories to perform specific type(s) of testing and calibration.. Laboratory Accreditation provides formal recognition of competent laboratories, thus providing a ready means for customers to find reliable testing ...
Established in 2004, Delta Wye Calibration and Testing Company LLC Dubai, UAE, is meticulous about calibration and testing for all industrial sectors in UAE likely Manufacturing, Oil and Gas, Process Industry, Engineering, Fabrication, Aviation, Medical, Electromechanical, Service and so on.. Adhering to standards equivalent to ISO 9001:2008 & ISO/IEC 17025:2005 demonstrates our service noteworthy & competent. Knowledgeable, Efficient and Proficient Workforce further enables our service and assistance at Delta Wye Calibration and Testing Company LLC to be competent and remain best in the industry.. Delta Wye Calibration and Testing Company LLC provide calibration of highest quality offering a whole range of factory and onsite services. Our calibration and testing services are designed to ensure that your testing system meet or exceed relevant standards. Our team is specialized, trained and supported with necessary tools.. Services Delta Wye Calibration and Testing Company LLC provide includes: ...
Leaf water content is one of the most common physiological parameters limiting efficiency of photosynthesis and biomass productivity in plants including Miscanthus. Therefore, it is of great significance to determine or predict the water content quickly and nondestructively. In this study, we explored the relationship between leaf water content and diffuse reflectance spectra in Miscanthus. Three multivariate calibrations including partial least squares (PLS), least squares support vector machine regression (LSSVR), and radial basis function (RBF) neural network (NN) were developed for the models of leaf water content determination. The non-linear models including RBF_LSSVR and RBF_NN showed higher accuracy than the PLS and Lin_LSSVR models. Moreover, 75 sensitive wavelengths were identified to be closely associated with the leaf water content in Miscanthus. The RBF_LSSVR and RBF_NN models for predicting leaf water content, based on 75 characteristic wavelengths, obtained the high determination
KENNEWICK, Washington - April 19, 2017 - Bruker introduces a new calibration package for the EOS 500 handheld Laser Induced Breakdown Spectrometer (HH-LIBS). In response to customer input, the EOS 500 now has the option to include Iron, Nickel, Copper and Cobalt alloy calibrations, in addition to the existing light metal calibrations (e.g. Aluminum, Titanium and Magnesium base alloys). The EOS 500 is a metals analyzer which can provide rapid grade ID, as well as the chemistry, of the sample under test. This is an excellent choice for either scrap sorting or Positive Material Identification (PMI) measurements; especially for light metals where the measurement is approximately 10x faster than handheld XRF. The EOS 500s rugged design ensures that it will withstand field operation in nearly all environments, including humid and dusty conditions. In addition, the EOS 500 has a unique Air-Flow Optics Shield, which creates a continuous air shield in front of the optics in order to prevent dust ...
On April 14,2003, three Earth remote sensing spacecraft were maneuvered enabling six satellite instruments operating in the visible through shortwave infrared wavelength region to view the Moon for purposes of on-orbit cross-calibration.
TY - JOUR. T1 - Constraining permeabilities in a large-scale groundwater system through model calibration. AU - Ophori, D. U.. PY - 1999/10/12. Y1 - 1999/10/12. N2 - The range of field estimates of permeabilities in rocks of the Atikokan Research Area (ARA), Canada, has been reduced by calibrating a groundwater flow model of the ARA. The flow model was calibrated to the recharge component of the water balance and to measured freshwater heads in boreholes. A good match between field and simulated recharge, and between measured and simulated heads was obtained with two different permeability-depth distributions that differed by up to two orders of magnitude in places. Solute transport simulation of the distributions of total dissolved solids (TDS), chlorides (CI) and oxygen-18 (18O) in groundwater in the area was performed to further refine the permeability estimates. Vertical average linear groundwater velocities from the calibrated flow model were used in one-dimensional solute transport models ...
0076] Sensors described herein may be configured to require no system calibration or no user calibration. For example, a sensor may be factory calibrated and need not require further calibrating. In certain embodiments, calibration may be required, but may be done without user intervention, i.e., may be automatic. In those embodiments in which calibration by the user is required, the calibration may be according to a predetermined schedule or may be dynamic, i.e., the time for which may be determined by the system on a real-time basis according to various factors. Calibration may be accomplished using an in vitro test strip or other calibrator, e.g., a small sample test strip such as a test strip that requires less than about 1 microliter of sample (for example FreeStyle® blood glucose monitoring test strips from Abbott Diabetes Care). For example, test strips that require less than about 1 nanoliter of sample may be used. In certain embodiments, a sensor may be calibrated using only one sample ...
The calibration procedure will automatically perform calibration at four points of rainfall intensity typically in the range 40-80mm/hr.. This allows the company to offer users more detailed technical information on the product and improved service levels.. All gauges will now be supplied with a printed multi-point calibration certificate, essential for traceability of data and product performance auditing.. Gauges are accurate to A correction algorithm is now also provided as standard, allowing users to undertake correction of rainfall data at extremely high rainfall densities if required ( With correction, all tipping buckets provide intensity errors of In addition to the calibration improvements, the funnel outlet diameter on the 0.2mm- and 0.5mm-capacity buckets have been increased to remove funnel back-up effects, reducing cost of ownership and the need for service visits in the field.. All Casella tipping bucket rain gauges are WMO and BMO compliant and calibrated in full compliance with ...
EVERETT, WA--(Marketwire - January 31, 2011) - Fluke Calibration, a global leader in calibration instrumentation and software, has introduced the 1551A Ex and 1552A Ex Stik Thermometers, engineered to give temperature calibration specialists the durable, intrinsically-safe digital instrument they need for precision temperature calibration. The Fluke 1551A and 1552A Stik...
GIS Calibration sse in El SalvadorSolution Delivery with Calibration. Environmental data is directly related to public health. Hence, its accuracy is very crucial. Oizom technology excels in data accuracy for environmental monitoring solutions. Oizom equipment pass through a 3-level calibration procedure - Factory, Lab, and Co-location calibration for accuracy.
Search and download thousands of Swedish university dissertations (essays). Full text. Free. Dissertation: ATLAS Calorimetry Hadronic Calibration Studies.
TY - RPRT. T1 - Calibration of Nacelle-based Lidar instrument. AU - Yordanova, Ginka. AU - Courtney, Michael. N1 - This is an internal report and therefore not available in full text. Please contact authors or director of authors department for further information.. PY - 2015. Y1 - 2015. N2 - This report presents the result of the lidar calibration performed for a two-beam nacelle based lidar at DTUs test site for large wind turbines at Høvsøre, Denmark. Calibration is here understood as the establishment of a relation between the reference wind speed measurements with measurement uncertainties provided by measurement standard and corresponding lidar wind speed indications with associated measurement uncertainties. The lidar calibration concerns the 10 minute mean wind speed measurements.. AB - This report presents the result of the lidar calibration performed for a two-beam nacelle based lidar at DTUs test site for large wind turbines at Høvsøre, Denmark. Calibration is here understood ...
The rectangular calibration chart 1 comprises a plurality of parallel stripe-like color patches that are distributed into groups 11, ..., 14 of adjacent color patches 111, 112, 113, 114, ..., 118, each stripe-like color patch having a uniform calibration color. The calibration colors of the different stripe-like color patches are regularly distributed in a perceptually uniform visual color space. Thank to this regular distribution, the best compromise can be found between the lowest number of different color patches and the highest accuracy of the calibration of a given color device. Such a calibration chart is advantageously used to correction of non-uniformities of the color device.
Applied Image to Feature Personal Identity Verification Calibration Standards at Photonics West - Dec 30, 2016 - Applied Image, Inc.
A simple, accurate and precise UV-spectrophotometric method based inverse least-squares was developed for the simultaneous determination of atorvastatin and amlodipine in tablet formulation. The absorbance values of the two analytes were linear with the concentration at the wavelengths taken at 5 nm interval over the range of 230 -260 nm. The calibration equations were developed using the absorbance values of nine synthetic mixtures containing different concentrations of two analytes measured at 5 nm intervalsin the range of 230 -260 nm. The developed equations werethen validated by calculating the analytes recovery from the analysis of a set of another five synthetic mixtures, the mean% recoveries were 100.02% and 100.06% with the corresponding% RSD of ±0.36 and±0.51 for atorvastatin and amlodipine, respectively. The calibration equations obtained were then used to obtain the concentration of each analyte in commercial samples. The mean % recoveries were 100.43% and 100.28% with the corresponding%
Government Contract Award: A--Space Based Optical Sensor Calibration Approaches. Access many more A - Research and Development Awards | Get your Free Government Bids Alert!
Four size exclusion chromatography (SEC) calibration techniques were tested for use in the molecular weight characterisation of Streptococcal Hyaluronic Acid (HA). An exponential equation, evaluated using the Hamielec method, was superior to the customary peak position method. It provided the most accurate estimates of the weight average molecular weight, Mw. The calibration was valid for HA in the range 800 - 2500 kDa, and permitted the calculation of both polydispersity and molecular weight distributions for HA from Streptococcal fermentations. This exponential calibration approach should have application in the characterisation of other large biopolymers, particularly where pore size of available SEC media is limiting ...
Radar, Satellite tracking systems, Calibration, Self operation, Errors, Least squares method, Equations of motionThe report describes a radar calibration procedure currently in use at the Air Force Eastern Test Range AFETR - a procedure which uses only a single radars own passive tracking data of two successive passes of a satellite in conjunction with the theoretical equations of motion, known physical constants and associated computer program. No external tracking data or externally computed ephemeris is involved. Under routine conditions the zero-set biases and mislevel are estimated to an accuracy of 20 feet in range and 0.03 milliradians in angles. Under good conditions five other radar error model coefficients can be determined to comparable accuracy. The present maintained accuracy level of the AFETR radars is described. Author
We have shown that when it is used to monitor preterm infants receiving supplemental oxygen, the Masimo SET Radical pulse oximeter returns a reduced number of values of 87-90%. This is explained by the internal calibration algorithm, which changes in this region and adjusts SpO2 values above 87% upwards. A new software algorithm removed this artefact and returns a distribution of values that is similar to other current oximeters.. According to the product information, the oximeter is validated for accuracy in human blood studies on healthy adult volunteers in induced hypoxia studies in the range of 70-100% SpO2 against a laboratory CO-oximeter. This variation equals ±1 SD, which encompasses 68% of the population. The stated accuracy for neonates is ±3%, so by this standard at least 68% of the time the displayed SpO2 reading should be within ±3% of the simultaneous CO-oximeter value on an arterial blood sample. In this regard the original oximeter performs within all recommended accuracy ...
Look up calibration in Wiktionary, the free dictionary. Calibration curve Calibrated geometry Calibration (statistics) Color ... Calibration methods for modern devices can be manual or automatic. As an example, a manual process may be used for calibration ... The assignment of calibration intervals can be a formal process based on the results of previous calibrations. The standards ... The design has to be able to "hold a calibration" through its calibration interval. In other words, the design has to be ...
... may refer to: Camera resectioning, which is called also geometric camera calibration Color mapping, which is ... camera calibration Radiometric calibration This disambiguation page lists articles associated with the title Camera calibration ...
In addition, "calibration" is used in statistics with the usual general meaning of calibration. For example, model calibration ... Brown, P.J. (1994) Measurement, Regression and Calibration, OUP. ISBN 0-19-852245-2 Ng, K. H., Pooi, A. H. (2008) "Calibration ... calibration, see Naeini, Cooper, Hauskrecht (2015) Beta calibration, see Kull, Filho, Flach (2017) The following multivariate ... An overview of calibration methods for two-class and multi-class classification tasks is given by Gebel (2009) . The following ...
A calibration curve is one approach to the problem of instrument calibration; other standard approaches may mix the standard ... "Worksheet for analytical calibration curve". ASTM: Static Calibration of Electronic Transducer-Based Pressure ... a calibration curve is a convenient extension of this approach. The calibration curve for a particular analyte in a particular ... the calibration curve provides a reliable way to calculate the uncertainty of the concentration calculated from the calibration ...
A calibration gas is a reference gas or gas mixture used as comparative standard in the calibration of analytical instruments, ... Therefore, a calibration gas has to be of a precisely defined nature or composition, like zero gas or span gas, for example 500 ... To be a calibration gas, the gas must be traceable to a national or international standard. Traceability is the unbroken chain ... For instance, a calibration gas of 500 ppm CO balance nitrogen having PT +/- 10% contains between 450 ppm and 550 ppm. ...
The calibration target for this kind of calibration is that of print stock paper illuminated by D65 light at 120 cd/m2. The ICC ... This means that three independent calibrations need to be performed: The camera or scanner needs a device-specific calibration ... The camera calibration needs a known calibration target to be photographed and the resulting output from the camera to be ... the color space that serves as a standard is sometimes known as a calibration target.[citation needed] Color calibration is a ...
Level-2 calibration, also known as kinematic calibration, concerns the entire geometric robot calibration which includes angle ... Besides the calibration of the robot, the calibration of its tools and the workpieces it works with (the so-called cell ... Level-3 calibration, also called a non-kinematic calibration, models errors other than geometric defaults such as stiffness, ... Hand eye calibration problem Non-parametric robot calibration Matlab Code transforming the configuration space Patent ...
The calibration curve itself has an associated error term, which can be seen on the graph labelled "Calibration error and ... Stuiver, M.; Reimer, P.J. Reimer; Reimer, R. (2013). "CALIB Radiocarbon Calibration". CALIB 14C Calibration Program. Queen's ... there is also a separate marine calibration curve. The calibration curve for the southern hemisphere is known as the SHCal as ... which must be converted to calendar ages by a process called calibration. Calibration is needed because the atmospheric 14 C/12 ...
... is a general term used in science and technology for any set of calibration techniques in support of ... "Radiometric Calibration for AgCam" Remote Sens. 2, no. 2: 464-477. D. Hall; G. Riggs; V. Salomonson. (1995). "Development of ... sensor calibration, and image data processing procedures, which tend to change through time. Targets in multi-date scenes are ... requires the use of ground measurements at the time of data acquisition for atmospheric correction and sensor calibration. This ...
In contrast to classic camera calibration, auto-calibration does not require any special calibration objects in the scene. In ... For example, calibration may be obtained if multiple sets of parallel lines or objects with a known shape (e.g. circular) are ... Camera auto-calibration is a form of sensor ego-structure discovery; the subjective effects of the sensor are separated from ... Camera auto-calibration is the process of determining internal camera parameters directly from multiple uncalibrated images of ...
Passive calibration satellites are objects of known shape and size. Examples include the Lincoln Calibration Sphere 1 developed ... "Design and applications of a versatile HF radar calibration target in low Earth orbit: HF RADAR CALIBRATION TARGET IN ORBIT". ... Active calibration satellites are equipped with transponders that emit a signal on command. The ground radar station submits a ... Radar calibration satellites are orbital satellites used to calibrate ground-based space surveillance radars. There are two ...
All video calibration software interfaces with a color analyzer that reads the luminance and the color from a commercial ... Video calibration software is software used to improve the quality of commercial video reproduction. Organizations such as the ... Video calibration software: software that receives the signals from the color analyzer and displays the data in numerical ... It was developed by a partnership between an American video engineer and a programmer with a goal to make video calibration ...
Reciprocity calibration is currently the favoured primary standard for calibration of measurement microphones. The technique ... Reciprocity calibration is a specialist process, and because it forms the basis of the primary standard for sound pressure, ... As such it is more usual to perform reciprocity calibration in an acoustical coupler, and then apply a correction if the ... Microphone calibration by certified laboratories should ultimately be traceable to primary standards a (National) Measurement ...
In robotics and mathematics, the hand eye calibration problem (also called the robot-sensor or robot-world calibration problem ... Methods are as follows, Straight edges There is a method using straight edges for hand-eye calibration. Amy Tabb, Khalil M. ... "Solving the Robot-World Hand-Eye(s) Calibration Problem with Iterative Methods." 29 Jul 2019. Mili I. Shah, Roger D. Eastman, ... Xu, Jing; Hoo, Jian Li; Dritsas, Stylianos; Fernandez, Javier Gomez (2022-02-01). "Hand-eye calibration for 2D laser profile ...
The Lincoln Calibration Sphere 1, or LCS-1, is a large aluminium sphere in Earth orbit since 6 May 1965. It is still in use, ... LCS-1 has been used for radar calibration since its launch. It was built by Rohr. Corp. for the MIT Lincoln Laboratory. LCS-1 ... "radar calibration via satellites". National Astronomy and Ionosphere Center. Acreibo Observatory. Retrieved 23 July 2015. Krebs ... Nelson, Heather C. "Low-Earth-Orbit Target Design for Optical Calibration of the Falcon Telescope". Electronic Thesis and ...
... webpage IceCube Neutrino Observatory "Award Abstract #0826747, Neutrino Array Radio ... The Neutrino Array Radio Calibration (NARC) experiment was the successor to the Radio Ice Cherenkov Experiment (RICE) which ... Calibration". National Science Foundation. 2009-04-15. Archived from the original on 2013-10-30. Retrieved 2009-04-10. ( ...
In the past, instruments that undergo evolution of calibration files or calibration software often required users to carry out ... The main goals behind the implementation of the OTFC system are to take advantage of better calibration files and the much ... In observational astronomy an On-The-Fly Calibration (OTFC) system calibrates data when a user's request for the data is ... The system can also offer more calibration steps than were available when the data was first released and can implement ...
This calibration is a critical step in ensuring that measurements of internal radiation doses to workers are accurate. The ... The National Calibration Reference Centre for Bioassay and In Vivo Monitoring (NCRC) is administered by the Radiation ... Canadian National Calibration Reference Centre Human Monitoring Laboratory Bioassay Laboratory Canadian Nuclear Safety ... The NCRC provides a national calibration reference service to universities, hospitals, public utilities and private firms in ...
In June, the name was also changed to the 2802nd Inertial Guidance and Calibration Group under HQ Air Force Logisitics Command ... The Dayton Air Force Depot was given the authority to establish a centralized calibration program. Under their plan, the Air ... It retains engineering authority for all calibrations performed in the PMEL labs throughout the Air Force, and oversees the ... The United States Air Force calibration program was initiated in January 1952 to comply with AF Regulation 74-2, which outlined ...
Hill, M.; Tiedeman, C. (2007). Effective Groundwater Model Calibration, with Analysis of Data, Sensitivities, Predictions, and ... Sensitivity analysis has important applications in model calibration. One application of sensitivity analysis addresses the ...
NABL provides accreditation to: Testing laboratories as per ISO/IEC 17025 Calibration laboratories as per ISO/IEC 17025 Medical ... Calibration Laboratories: Electro-Technical, Mechanical, Fluid Flow, Thermal & Optical, Radiological, Thermal. Medical ... 2018). "Current status and way forward for National Accreditation Board for Testing and Calibration Laboratories Accreditation ... Such international arrangements facilitate acceptance of test / calibration results between countries to which MRA partners ...
... is the fifth studio album by Omar Rodríguez-López, and the fourth released in the ... Calibration was Omar's second album to chart on a Billboard music chart and his highest charting yet, peaking at #29 on the Top ... According to the label, the original title given to them by Omar was "Calibration Is Pushing Luck and Key Too Far" but the "Is ... D.E.I.M.O.S. Calibration (is Pushing Luck and Key Too Far) - The Comatorium (Articles with short description, Short description ...
Calibration. In: Perspectives on Science, vol. 5, 1997, pp. 31-80. Millikan´s Oil Drop Experiments. In: The Chemical Educator, ...
Calibration. Many forms of mechanical or electronic equipment require periodic intrusive calibration. Other administrative ...
Calibration equipment. Test equipment. Automatic test equipment. Support equipment for on- and off-equipment maintenance. ... Technical and supply bulletins Transportability guidance technical manuals Maintenance expenditure limits and calibration ...
"External Calibration". Retrieved 18 March 2008. Torres, Rebecca E.; William A. Hyman (2007). "Replacement Parts-Identical, ... ISBN 978-3-527-31255-9. "Calibration of dissolution test apparatus (USP apparatus 1 and 2) - SOP". {{cite web}}: Missing or ... in particular items that are shock sensitive and require balancing or calibration, and re-qualification needs to be conducted ...
"Radiocarbon Calibration". University of Oxford. Archived from the original on 5 March 2016. Retrieved 28 July 2015. " ...
Techniques in multivariate calibration are often broadly categorized as classical or inverse methods. The principal difference ... classical calibration for small data sets". Fresenius' J. Anal. Chem. 368 (6): 585-588. doi:10.1007/s002160000556. PMID ... Multivariate calibration techniques such as partial-least squares regression, or principal component regression (and near ... Olivieri, A. C.; Faber, N. M.; Ferre, J.; Boque, R.; Kalivas, J. H.; Mark, H. (2006). "Guidelines for calibration in analytical ...
If you have a display calibration device and software, it's a good idea to use them instead of Display Color Calibration ... "The Monitor calibration and Gamma assessment page". Retrieved 2018-11-30. the problem is caused by the risetime of most monitor ... "Monitor calibration and gamma". Retrieved 2018-12-10. The chart below enables you to set the black level (brightness) and ... A good monitor with proper calibration shows the six numbers on the right in both bars, a cheap monitor shows only four numbers ...
Calibration, however, cannot remedy faults of low-grade ferric tape, which according to Robertson, "would be bad choices for ... Classic Philips calibration tapes were technologically obsolete and samples were inconsistent. New TDK tapes were even less ... Reviewers noted the manual calibration on the Dragon was as good as the automatic systems of its competitors. Manual process ... The Dragon has a well-developed calibration panel and automated fader but otherwise its function set is minimal, assuming fully ...
X-SHOOTER Calibration Plan. Starting in Period 100, we are changing the nighttime calibration plan. The Observatory will supply ... Calibration Plan. Standard Calibrations. The most commonly used observing configurations of each instrument are calibrated by ... Please note that there are two separate kinds of calibrations in operational terms:. *Calibrations that observe a reference ... Attached Calibrations. When the highest possible wavelength calibration or flatfielding accuracy is required (e.g. for radial- ...
Launches Comprehensive Color Calibration Service For Displays. October 10, 2019. ... so that the calibration is tailored specifically to their viewing environment. During a calibration session, several key image ... Canons color calibration service is available now. For more information about the service or to set-up a free consultation ... "In our case, we needed color calibration assurance in P3D65, DCI XYZ and head/full range REC 709 color spaces. The Canon ...
This Europe-wide unique facility was co-funded by ESA to establish a ‚Calibration Homebase (CHB) for the airborne ... IMF has set-up a new laboratory for calibration of imaging spectrometers. ...
Determining the local calibration of computer-assisted detection (‎CAD)‎ thresholds and other parameters: a toolkit to support ...
National estimates for Calibration Technologists and Technicians: Employment estimate and mean wage estimates for Calibration ... National estimates for Calibration Technologists and Technicians. Industry profile for Calibration Technologists and ... Top paying states for Calibration Technologists and Technicians: State Employment (1) Employment per thousand jobs Location ... Top paying industries for Calibration Technologists and Technicians: Industry Employment (1) Percent of industry employment ...
Sensor Calibration. Compute offsets for position, current, and voltage. Compute the Hall sequence and offsets for Hall sensor, ... Quadrature Encoder Offset Calibration for PMSM Motor. Calculates the offset between the d. -axis of the rotor and encoder index ... Hall Offset Calibration for PMSM Motor. Calculates the offset between the rotor direct axis (. d. -axis) and position detected ... Hall Sensor Sequence Calibration of BLDC Motor. Calculates the Hall sensor sequence with respect to position zero of the rotor ...
In this lens calibration guide, discover when and how to perform this important maintenance step to produce the sharpest ... What is lens calibration?. Lens calibration, also known as autofocus calibration, is a method of fine-tuning where the focus ... Lens calibration tools and setup.. To calibrate, you need a well-lit environment, a tripod, a flat surface, and a subject to ... The calibration process involves taking a series of photos in a controlled way, so you can see exactly how your focus is off. ...
Questions/Comments/Problems with the CALDB to: [email protected] Page Author: Michael F. Corcoran 1-301-286-5576 ...
Our stationary calibration systems are versatile in their functionality, individually configurable as well as exceptionally ... Precise calibration instruments are the starting point for resolving your test requirements, even though they are only one ... Whether built-in to test benches, mobile test carts or 19 racks and supplemented with user-friendly calibration software, you ... ","linkText":" Submitting for calibration","locales":"en","mode":"full","target":"_self","url":"/en-in/lp_service_calibration. ...
... provides calibration services for hydrometers used to measure liquid density. ... The calibration report includes a simple equation for each calibration point that gives the user a correction to the hydrometer ... and others are accepted for calibration. NIST calibrations are done by weighing the hydrometer while it is immersed to ... The calibration results have an expanded uncertainty (with coverage factor of 2) of 100 parts in 106 or less of the liquid ...
The table shown below describes our scope of accreditation for attenuator calibration:. Parameter/Equipment. Range. Best ...
Calibration. The XB271HK doesnt require calibration in its default Standard mode, although there are a couple of settings we ... OSD Setup And Calibration. OSD Tour. Pressing any bezel key brings up a quick menu. The big G stands for Game Mode which has ... Check out our calibration notes below for more detail.. Blue Light comes in four levels that warm the white point in an effort ...
Calibration Plan. Standard Calibrations. The most commonly used observing configurations of each instrument are calibrated by ... Please note that there are two separate kinds of calibrations in operational terms:. *Calibrations that observe a reference ... OBs for this kind of calibration should be prepared within the CB (Calibration Block) in p2, as no acquisition template needs ... Please indicate in the User Comments fields of science OBs when a user-provided calibration must be executed contiguously. ...
When it comes to GFG Calibration Gas, you can count on Grainger. Supplies and solutions for every industry, plus easy ordering ... Calibration gas is used to calibrate gas analyzers, gas monitors, or gas detectors. ... Calibration gas is used to calibrate gas analyzers, gas monitors, or gas detectors. ...
Determining the local calibration of computer-assisted detection (‎CAD)‎ thresholds and other parameters: a toolkit to support ...
Hi all I have recently purchased an Onkyo NR818 AVR with Dali Zensor 5, 5.1 surround sound package. Absoloutley love it, but just curious about a couple...
The tuning and calibration work for Engine-out Emissions and Exhaust After-treatment Systems must therefore include all driving ... The tuning and calibration work for Engine-out Emissions and Exhaust After-treatment Systems must therefore include all driving ... The process for use of the Virtual Chassis Dyno by the calibration engineer is also described. The outcome is time and test bed ... Desktop Simulation and Calibration of Diesel Engine ECU Software using Software-in-the-Loop Methodology ...
1. AN 777: Data Word Alignment Calibration With Multiple Intel FPGA PHYLite for Parallel Interfaces IP Cores. This application ... Document Revision History for AN 777: Data Word Alignment Calibration With Multiple Intel FPGA PHYLite for Parallel Interfaces ... Document Revision History for AN 777: Data Word Alignment Calibration With Multiple Intel FPGA PHYLite for Parallel Interfaces ... Document Revision History for AN 777: Data Word Alignment Calibration With Multiple Intel FPGA PHYLite for Parallel Interfaces ...
A Tektronix factory certified calibration plan is the best way to ensure top performance over the lifetime of your instrument. ... Calibration Service Levels. Calibration Features:. Z540. Calibration1. ISO 17025. Compliant1. ISO 17025. Accredited. ... Coverage includes the initial calibration plus 2-years calibration coverage.. Tektronix Opt. C5. Calibration service 5 years. ... Calibration service 3 years. C3 provides for 2 calibration events during 3 years after shipment. Includes traceable calibration ...
... Presentations Tagged with "Spitzbart". Reference. Presenter. Title. 2004.31. Bradley. Spitzbart. ...
Kipp & Zonen Pyranometer & Pyrheliometer Calibration Frequency KippZonen_Pyranometer_Pyrheliometer_Calibration_Frequency.pdf ( ... Kipp & Zonen Pyranometer & Pyrheliometer Calibration Frequency. Corporate Information ...
Download 700PCK Pressure Calibration Software (.exe). The Fluke 700PCK Pressure Calibration Kit makes it possible to calibrate ... Calibration data is captured for import to your database. A PC running Windows XP or later is required. ... When installed on your PC, the Windows-based software easily steps you through an as-found verification, a calibration ... and Fluke 700PCK Version 4 Pressure Module Calibration software. ...
... barcode verifiers require calibration. Read the most frequently asked questions about this calibration process. ... How often do calibration cards need to be replaced? Calibration cards expire two years from the date of issue. Cards should be ... What is calibration?. Calibration is the process of mapping a cameras measurement to actual reflectance levels, establishing a ... Calibration is not specific to the symbology. Once the verifier is calibrated using either type of calibration target, the ...
Monitor Calibration for Photographers I still need to a ... Re: New CiC Tutorial Added: Monitor Calibration Originally ... Re: New CiC Tutorial Added: Monitor Calibration Hi Sean,. Typos:. Iif in first word of second sentence.. Only found that one. ... Tutorial: Monitor Calibration for Photographers. I still need to add perhaps one more section and do some more proofing, but it ... New CiC Tutorial Added: Monitor Calibration This one is not visible on the main page yet, but I thought Id share it here first ...
... *To: Unidata Support ,[email protected],. *Subject: Re: 20030326: problem? with RAIN ... Right now, we get some of this by parsing the comment cards and getting numeric values for center lat/lon and calibration units ... Prev by Date: 20030326: problem? with RAIN calibration *Next by Date: 20030328: McIDAS - Solaris/SPARC - NLDNDISP OUT=PLO fails ... Previous by thread: 20030326: problem? with RAIN calibration *Next by thread: 20030328: McIDAS - Solaris/SPARC - NLDNDISP OUT= ...
... the facility calibration unit. Flat-fielding is done with GCAL or on the sky during twilight. Baseline calibrations will be ... Wavelength calibration of GMOS is obtained using GCAL, ... Examples of Calibration Data. *Plots of CuAr spectra to assist ... GMOS Baseline Calibrations. For all queue observations a set of standard calibrations (the baseline calibrations), shown in ... Observations to provide absolute spectrophotometric calibration are not included as part of the baseline calibration set.. ...
This is the standard for the home theatre, but the ITU and other organizations have standardized on surround calibration ... So…is this standard too "loud" for near/midfield monitoring? And what is the calibration procedure, exactly? ...
Performed by our calibration experts, all Atlas Copco calibrations fulfill global and national requirements. ... force tools and measure equipment calibrations increase the quality, reduce rework and risk of liability costs. ... As your calibration expert, we offer various types of calibration services. We perform calibrations for the following tools:. * ... Additional benefits of tool calibration include securing your quality and reduction of defects in production. Calibration is ...
We are seeking a Calibration Technician for our electronics test equipment client, located near Nashua, NH.. Responsible for ... May also assist with development of new methods and formulas to solve measurement and calibration problems.. Must have ... Additional training and/or certifications in metrology, precision measurement equipment, calibration and repair of electronic ... Provide support for all calibration disciplines (Chemical, Dimensional, Electromagnetic, Mechanical, Process Thermodynamic and ...
  • Additional training and/or certifications in metrology, precision measurement equipment, calibration and repair of electronic and mechanical equipment is a strong plus. (
  • For developing countries and countries in transition, metrology and calibration is a way to establish the trust in products and services that are needed to hook up to the global business. (
  • The Fluke Calibration metrology baths use the 2100 temperature controller which has the following built-in safety devices. (
  • Calibration laboratories that receive the A2LA accreditation are held to the highest standards published by the Organization for Standardization (ISO) meaning that they meet requirements for competence of testing and calibration laboratories covered under ISO 17025. (
  • Accreditation to ISO/IEC 17025 is the formal recognition that a calibration laboratory is technically competent to carry out specific calibrations. (
  • For all queue observations a set of standard calibrations (the 'baseline calibrations'), shown in the tables below, will be taken by Gemini Staff to ensure the long-term utility of data in the archive. (
  • A convenient multi-camera self-calibration for virtual environments. (
  • Graphical sketch of the self-calibration problem. (
  • Since the PC itself is not necessary for self-calibration, the ability to calibrate the monitor is not dependent on using an operating system supported by the ColorNavigator software. (
  • Administrators can set color modes, schedule self-calibration, register or adjust asset management settings, and other tasks whether the monitors are local or remote. (
  • This technique is called self-calibration and takes advantage of the fact that interferometer data is over-constrained (we have more equations than we have solutions). (
  • For an array of 40 antennas, you should have a Peak/RMS of at least 45 in your continuum image to attempt self-calibration. (
  • presentation When, why, and how to do self-calibration for more information on this relationship. (
  • Self-calibration is an iterative process. (
  • In general, you start with phase-only self-calibration and only do amplitude calibration at the end of the self-calibration process if there are amplitude-based gain artifacts in the data (see the Imaging and Deconvolution talk from the Synthesis Imaging Summer School for more detail. (
  • Self-calibration can either be performed with line or continuum data. (
  • For an example of self-calibration with line data, see the VLA high frequency spectral line tutorial for IRC+10216 . (
  • The first thing you should do when beginning self-calibration is to save the original flags in your data set. (
  • See Self_Calibration_Template#Restart_Self-Calibration if you need to start over or go back a step in self-cal. (
  • Now we can set up the parameters for the self calibration. (
  • If you run the self-calibration process more than once, you will need to remove any models that could be left in the measurement set. (
  • With exception of the angular affinity the systematic image errors for corresponding cameras of both blocks have the same trend, but as usual for block adjustments with self calibration, they still show significant differences. (
  • At least in the analyzed data sets the self calibration of sub-cameras by bundle block adjustment suffers from the correlation of the inner to the exterior calibration due to missing crossing flight directions. (
  • If additional calibrations are deemed necessary by applicants, for example to achieve a precision beyond that achievable via the baseline set, then these must be included explicitly as part of the Phase I proposal and Phase II science program. (
  • Any time required for additional calibrations requested by the PI will be charged to that particular program. (
  • Ao marcar esta caixa, eu concordo em receber, por e-mail e telefone, comunicados de marketing e ofertas de produtos da Fluke Calibration, uma divisão da Fluke Corporation, ou de seus parceiros, de acordo com a sua política de privacidade. (
  • Contact Fluke Calibration Pressure Technical Support at the below link or by calling +1 877 355 3225. (
  • Calibrations that observe a reference celestial source , like a spectrophotometric standard star or a nearly-featureless star for the measurement of telluric lines. (
  • And there is no better source for calibration than the original equipment manufacturer, Tektronix, a pioneer in the test and measurement industry. (
  • Calibration means a process of testing and adjusting an instrument or test system to establish a correlation between the measurement response and the concentration or amount of the substance that is being measured by the test procedure. (
  • Calibration is the process of mapping a camera's measurement to actual reflectance levels, establishing a baseline for verification software reflectance levels. (
  • May also assist with development of new methods and formulas to solve measurement and calibration problems. (
  • In basic terms it refers to a method of evaluating how well a laboratory is doing a particular calibration with respect to its claimed measurement uncertainty and how it fares with other participants. (
  • Trescal announced that it has acquired Instrument Calibration Services and Test Equipment Repair Corporation, two companies that provide calibration and repair services for a wide variety of measurement and test equipment. (
  • An important tool for ASCAT inter-beam calibration is the visualization of triplets of radar backscatter in the 3-dimensional measurement space. (
  • Such cone visualization in the measurement space by the C-band Geophysical Model Function (GMF) CMOD5, i.e., a function that relates sea surface wind vector to backscatter, can in turn be used for ASCAT calibration. (
  • The simulations show that the impact of the wind component errors on the calibration results is large as compared to the impact of the measurement errors. (
  • Calibration is a fundamental step in the practice of measurement. (
  • In practice, the simplest calibration is a comparison between measurements - one made with the instrument under test and another measurement with known uncertainty made in a similar way with a second instrument, the reference unit. (
  • The Eizo ColorEdge CG2420 can be correlated to the measurement results of an external calibration sensor. (
  • This is convenient if the ColorEdge CG2420 is used in a work environment with other ColorEdge monitors and one measurement device must be used as a standard for all calibration. (
  • Responsible for calibration, troubleshooting and repair of electronic and mechanical equipment, in the environmentally controlled laboratory and at customer sites. (
  • Hitachi High-Tech Analytical Science Americas, Inc. announces that its calibration laboratory received the acclaimed American Association for Laboratory Accreditation (A2LA) for their Optical Emission Spectroscopy (OES) product line. (
  • The term 'proficiency testing' is one that every accredited calibration laboratory is quite familiar with. (
  • The Digital Measuring Instruments Calibration Laboratory Software supports labs based on the NI Engineering Laboratory Virtual Instrumentation Suite (NI ELVIS) II. (
  • The Digital Measuring Instruments Calibration Laboratory Software is a software add-on for LabVIEW that helps students become familiar with the calibration of digital electrical measuring instruments. (
  • You also can use the Digital Measuring Instruments Calibration Laboratory Softwaree to view graphical representations of your experiment results or export the results in the Microsoft Excel file format. (
  • MTX has a well equipped calibration laboratory that allows its engineers to verify with extreme accuracy most instruments before they are put into the operating cycle. (
  • Our laboratory has a dedicated controlled environment for high-precision physical and dimensional calibrations. (
  • The estimated radial symmetric distortion of the nadir sub-camera corresponds to the laboratory calibration of IGI, but there are still radial symmetric distortions also for the inclined cameras with a size exceeding 5μm even if mentioned as negligible based on the laboratory calibration. (
  • The calibration results have an expanded uncertainty (with coverage factor of 2) of 100 parts in 10 6 or less of the liquid density. (
  • Hydrometers with scales for density, specific gravity, proof spirit for alcohol solutions, API degrees for petroleum measurements, degrees Baume heavy and degrees Baume light, and others are accepted for calibration. (
  • Whether you're making electronic measurements on a brand-new circuit design or spot-checking one unit out of thousands in production, ensure that your results are accurate and maintain compliance with factory certified calibration from Tektronix. (
  • Calibration is a matter of trust, and though trust in itself is almost unmeasurable, measurements made with calibrated equipment create confidence. (
  • The industrial need for comparable, accurate, and precise measurements has led to standardization, and as a result, a growing need for calibration. (
  • Highly reliable and accurate dew point monitors, employing a chilled mirror sensor to deliver consistent drift-free measurements without regular calibrations or sensor replacement. (
  • Our routine calibration services give you confidence in your measurements. (
  • This traceability is a fundamental principle in any type of calibration work. (
  • Establishment of national standard for anti-SARS-Cov-2 neutralizing antibody in China: The first National Standard calibration traceability to the WHO International Standard. (
  • We offer calibration at our Tektronix or Keithley service centers as well as onsite calibration performed on your schedule at your facility. (
  • Whether you need mechanical calibration, temperature calibration, or other physical and dimensional calibration services, we provide offer simplified onsite calibration to all 50 states, minimizing the time your equipment is out of commission or in a calibration lab. (
  • So it makes sense in every case to check the certificate of calibration and make sure that it is in order and meets the requirements of the law. (
  • When the highest possible wavelength calibration or flatfielding accuracy is required (e.g. for radial-velocity studies or high S/N observations in the regime of CCD fringing) the use of attached calibrations at nighttime is possible (cf. (
  • Wavelength calibration of GMOS is obtained using GCAL, the facility calibration unit. (
  • Starting in Period 100, we are changing the nighttime calibration plan. (
  • Since 2017B the time required for nighttime baseline calibrations has to be included in the 'Total Time' requested during Phase I. The required 'Night Basecal Time' per observation is automatically calculated by the Phase I Tool (PIT) . (
  • Please check carefully in the User Manual whether or not the instrument configurations that you plan to use are included in the instrument's Calibration Plan. (
  • Calibration due" notices help you keep track of your instrument's calibration intervals, sparing you the administrative effort of tracking the intervals manually. (
  • Refresh your focus with lens calibration. (
  • What is lens calibration? (
  • Lens calibration, also known as autofocus calibration, is a method of fine-tuning where the focus point falls in your image when you are autofocusing. (
  • And lens calibration corrects how 'off' the lens is. (
  • No, lens calibration is not needed with a mirrorless camera and lens. (
  • Lens calibration tools and setup. (
  • I see that the lens calibration software is using the monitor to display the checker board, since the monitor is small, if I use this lens focus ring setting to calibrate, I will get a blurry result if I do not turn the ring to refocus on the screen. (
  • Those customers who routinely send products in for annual calibration are realizing a lifetime warranty for their products. (
  • Electric Power Systems has trusted ETI with our annual calibration program at over 30 facilities nationwide for more than two decades. (
  • Consequently, the workload, cost and duration for the engine and after treatment system calibration activities, based on physical tests as today, are no more compatible with realistic development targets. (
  • Either of these actions (choosing a new magnification or a new reticle) will re-initialize the tutorial and enable the visitor to start another calibration. (
  • The examiners with an agreement of less than 0.60 were considered inept and should be recommended for another calibration process. (
  • With over 25 years of experience in calibrations and electrical test equipment, ETI Precision's calibration technicians can provide calibration services to a variety of physical and dimensional measure instruments. (
  • The XB271HK doesn't require calibration in its default Standard mode, although there are a couple of settings we recommend changing for optimal picture quality. (
  • To be compliant with the International Organizations for Standardization (ISO) standards, barcode verifiers require calibration. (
  • Industries with the highest published employment and wages for Calibration Technologists and Technicians are provided. (
  • For a list of all industries with employment in Calibration Technologists and Technicians, see the Create Customized Tables function. (
  • They consist of fixed cost components of 2240 € for each test report and 1020 € for each calibration field used as well as an hourly rate of 306 € for each beam tome time hour used for the irradiation of the test object (as of 08.10.2021). (
  • The most commonly used observing configurations of each instrument are calibrated by means of the Observatory's Calibration Plan. (
  • Given an automatic and self-contained procedure which allows the robot to calibrate itself without the need of external tools, we are interested in how to select the set of configurations that maximize calibration accuracy while minimizing calibration time. (
  • inproceedings{pub6655, author = { Carrillo, Henry and Birbach, Oliver and Täubig, Holger and Bäuml, Berthold and Frese, Udo and Castellanos, José A. }, title = {On the Criteria for Configurations Selection in Robot Calibration}, booktitle = {Proceedings of the IEEE International Conference on Robotics and Automation. (
  • We obtain gains of up to 28X in realistic configurations leading to calibration times below the second. (
  • When you send your meter or sensor back for service, Coherent provides much more than just a calibration. (
  • What is a pressure sensor calibration? (
  • Pressure sensor calibration with a deadweight tester is one of the usual methods of calibrating pressure sensors: a counterweight is placed on a piston cylinder to compensate the pressure present under the piston. (
  • This type of calibration is based on continuous loading of the pressure sensor. (
  • From pressure transducer and pressure sensor setup to leak testing and electrical loop calibration, Druck has the tools you need to complete the task. (
  • The sensor swings onto the screen only when calibrating, eliminating the need for a third-party calibration device. (
  • It offers asset management of client Eizo ColorEdge monitors and covers calibration, emulation, built-in sensor correlation, and color mode settings. (
  • The P.I.N.D.A./SuperPINDA sensor must stop right in the center of the 1st calibration point (please refer to the photos below). (
  • Pipette calibration testers allow for the accuracy of the pipette to be quantified to determine suitability or compliance for your procedure. (
  • Deadweight testers are used in calibration laboratories to calibrate transfer standards such as electronic pressure measuring instruments. (
  • Baseline calibrations will be obtained for all observations, both queue and classical. (
  • The baseline calibration set varies from instrument to instrument and from mode to mode. (
  • Note that all calibrations, including baseline arcs, flats, spectral response standards and Nod & Shuffle Darks must be included in the Phase II science program. (
  • Baseline calibration data may be shared between programs and will be distributed to the users as part of their dataset. (
  • Any time used between the hours of nautical sunset and sunrise to obtain baseline calibrations will not be explicitly charged to the program but will be charged to the partner country whose NTAC recommended time (i.e. it is part of the time accounting used to balance partner usage). (
  • For Nod-and-Shuffle observations all baseline calibrations (with the exception of the Nod & Shuffle Darks) will be taken without Nod-and-Shuffle, e.g. spectrophotometric standard stars will not be taken with Nod-and-Shuffle. (
  • Dome flats may also be taken, but are not guaranteed to be part of the baseline calibration set. (
  • These fringe frame images are taken as part of baseline calibration. (
  • Not included as part of the baseline calibration set. (
  • Once the reticle and the stage micrometer rulings have been aligned, use the mouse cursor to click on the superimposed rules at the left-hand rule (the rule labeled " 0 ") of the eyepiece reticle to establish a calibration baseline. (
  • The distance (in micrometers) between the baseline and calibration line will be displayed on the lower right-hand side of the viewport in a yellow box entitled Micrometer Length . (
  • The scan mirror reflectivity of the Advanced Baseline Imager (ABI) solar reflective bands was characterized before launch to ensure calibration uniformity. (
  • Minimum of an Associate's degree in Electronics, Engineering, Math or Science and a minimum of three years of experience in calibration and repair of electronic and mechanical equipment or equivalent combination of education and work experience. (
  • Another option is to return your equipment to Lifeloc for a more complete service which includes yearly calibration, diagnostics and a mechanical check-up. (
  • When installed on your PC, the Windows-based software easily steps you through an as-found verification, a calibration adjustment, and an as-left verification. (
  • The effect of adjustment in calibration is explained by the adaptive participation of metacognitive processing. (
  • The calibration process adjusts reflectance levels and checks these levels to ensure the most accurate verification results. (
  • This is contrary to previous approaches which target the variance indirectly via calibration parameters. (
  • For more details on the XYZ calibration procedure's inner workings, please see the Github changelog . (
  • Many cameras recognize the specific serial number assigned to a lens, and will remember its calibration setting from the last time you set it. (
  • The outcome is time and test bed and prototype saving for the calibration activity. (
  • With a factory certifited calibration plan, your instrument will receive priority service, placing it ahead of the on-demand calibration queue and minimizing turnaround time. (
  • The time will be charged in proportion to the number of programs that receive the calibration data. (
  • Fast calibration turn around time. (
  • We offer simplified, onsite calibrations in all 50 states, minimizing the time your equipment is out of commission, keeping your projects on schedule and allowing you to best support your customers. (
  • If the element #1 is nearest the end of the PAUT calibration block it will have the shortest arrival time in pulse-echo and all subsequent elements should display a monotonic increase in arrival time. (
  • The operational characteristics of gas meters are basically the same as liquid meters, however the calibration methods and procedures are worthy of a paper specific to gas applications and will not be address at this time. (
  • Conclusion: The calibration process of examiners configured itself as a challenge to researchers, demanding time and effort. (
  • The intent of this paper , courtesy of FTI Flow Technology , is to provide the reader with a basic understanding of the operational characteristics and calibration methods of turbine flow meters. (
  • A new specimen can be measured using the same calibration (and objective magnification) by selecting a candidate from the Choose A Specimen pull-down menu. (
  • Additional objective/eyepiece reticle calibrations can be performed by selecting a different magnification from the Objective Magnification pull-down menu. (
  • Navigate to LCD menu - Calibration - Auto-home. (
  • When you choose our factory certified calibration plans, you can rest easy knowing you won't miss a calibration and that your equipment is running at peak performance. (
  • As an expert in tightening tools and quality assurance equipment, we want to support you in the calibration of your equipment allowing you to concentrate on your core activities. (
  • We are seeking a Calibration Technician for our electronics test equipment client, located near Nashua, NH. (
  • Tried and trusted by instrumentation engineers for a generation, Druck's Essential line of pressure calibration and testing equipment is designed to be cost-effective, rugged, and hard-wearing, without compromising accuracy and functionality. (
  • Home » Lab Equipment » Calibration Equipmen. (
  • Highly portable calibration instruments ideal for on-site use in process industries, for diagnosing factory equipment, and also for research and development. (
  • Contact us today to learn how partnering with ETI can simplify your annual equipment calibration program. (
  • As your partner, ETI Precision is here to make sure your critical equipment is accurate and reliable through annual calibrations. (
  • Whether you want to to send calibration equipment to our calibration labs or have our experts handle onsite at your facility, our experts keep your equipment in top shape. (
  • Whether it's troubleshooting with your team over the phone, performing our nationwide calibration services, or repairing and retrofitting equipment, we strive to provide the highest level of service and support. (
  • If there are many machines, it is recommended to purchase automatic calibration equipment. (
  • The National Institute of Standards and Technology (NIST) provides calibration services for hydrometers used to measure liquid density. (
  • The Fluke 700PCK Pressure Calibration Kit makes it possible to calibrate your pressure modules at your facility using your own precision pressure standards. (
  • From millimeter to nanometer, these standards cover the wide range of features needed for magnification calibration and use, from every day to fully traceable. (
  • Calibration is therefore statutory and can be traced back to European standards. (
  • Calibration Plans for each instrument and mode are described in detail in their corresponding User Manual , and their execution times are not charged to the Service Mode programmes. (
  • In response to this growing demand, Canon U.S.A. Inc., a leader in digital imaging solutions is excited to announce it will now be offering a color calibration service for display products. (
  • Clients of this service will have Imaging Science Foundation (ISF) certified Canon professionals visit them on-site, so that the calibration is tailored specifically to their viewing environment. (
  • At Electric Entertainment we had an exceptional experience with Canon's on-site service and support reference display color calibration service that included HDR and SDR alignments," noted Bill Ritter, Head of Engineering for Electric Entertainment. (
  • Canon's color calibration service is available now. (
  • For more information about the service or to set-up a free consultation with a Canon calibration professional, please visit . (
  • Calibration service plans can be added as an option using the ordering nomenclature below with selected Tektronix and Keithley instruments. (
  • Many of our meters and sensors service items include both calibration and minor repairs. (
  • A large percentage of our calibrations are performed within five business days, and expedited service is available, to minimize our customer's downtime. (
  • Coherent's investment in service and calibration facilities and personnel is an on-going process, and we strive to maintain our unique technological edge. (
  • Jürgen Emslander runs a calibration service company called Geo Tec Messtechnik, and has recently upgraded his laser calibration system from the industry standard ML10 to the new Renishaw XL-80 . (
  • The new calibration method is consistent with earlier, manual calibrations performed by NIST using reference hydrometers (see Figure 5). (
  • The best way to ensure top performance is to follow a consistent calibration schedule, adhering to the recommended calibration interval for each specific instrument. (
  • 1. AN 777: Data Word Alignment Calibration With Multiple Intel FPGA. (
  • Calibration data is captured for import to your database. (
  • All calibration data is available through the Gemini Observatory Archive . (
  • Responsible for efficient and accurate data collection and data entry of calibration results and tests. (
  • Within the framework of the Ocean & Sea Ice (OSI) Satellite Application Facility (SAF), KNMI has developed another ocean calibration tool, which can handle both real and simulated data. (
  • Some absolute ocean calibration differences between real and simulated data still need to be further investigated, but relative beam calibration can be done with confidence. (
  • The calibration method is based on Fourier analysis of the data. (
  • This ocean calibration needs only 6 hours of data to produce accurate results and is therefore also very suitable for monitoring purposes. (
  • Amplitude calibration should be used with caution because it has the potential to change the fluxes of sources in your data. (
  • This step is necessary because when you apply the calibration to a data set it flags data that is not associated with a solution. (
  • Applying a bad calibration table to your data can result in the excessive flagging of your data. (
  • Yearly calibration must be performed by a Lifeloc Certified Operator and Calibration Technician (C-LOCT). (
  • The calibration process involves taking a series of photos in a controlled way, so you can see exactly how your focus is off. (
  • The calibration process involves statutory testing of a measuring device while observing the requirements of the German Weights and Measures Act. (
  • This question is prompted by another round-robin type study involving the calibration of thread plug gages, the results of which were predictable because similar studies over the past twenty years or so have produced similar results. (
  • Ocean calibration results and scatterometer wind speed statistics show that the KNMI wind product is of high quality. (
  • However, calibration procedures over the ocean have the advantage that they may be applied over a large portion of the globe and consequently may provide accurate results over a relatively short period. (
  • The KNMI winds have a pre-operational status, awaiting the final calibration results in February 2008. (
  • Will turning the focus ring affect the calibration results? (
  • Aim: To report the challenges faced in a calibration process of examiners for an epidemiological study on malocclusion involving quantitative and ordinal categorical variables, showing the results of inter and intra-examiner diagnostic consistency. (
  • Results: In three calibration exercises, which proved to be lengthy and costly, 33 examiners divided into 7 groups, examined and re-examined 315 students. (
  • Matlab package for a complete and fully automatic calibration of multi-camera setups (3 cams min). (
  • Camera Calibration toolbox for Matlab. (
  • An approval process, requested by the manufacturer of the measuring device, with e.g. the Physikalisch-Technische Bundesanstalt ( PTB ), is therefore required before calibration. (
  • NIST Calibration Services for Hydrometers. (
  • Professional calibration services secure your quality and reduce defects in production. (
  • As your calibration expert, we offer various types of calibration services. (
  • Eurotherm Online Services (EOS) is an integrated online platform and management tool for overseeing calibration records and regulatory status. (
  • Our calibration services can be tailored to fit your needs. (
  • Once the verifier is calibrated using either type of calibration target, the verifier is calibrated for both 1D and 2D barcodes. (
  • The type approval involves checking whether the design and condition match the relevant calibration requirements. (
  • The kit consists of a power supply, an interface adapter, appropriate cables, and Fluke 700PCK Version 4 Pressure Module Calibration software. (
  • A Software for Complete Calibration of MultiCamera Systems. (
  • The bundled ColorNavigator 7 software allows you to easily carry out calibration. (
  • WordPress es un software web galardonado, utilizado por millones de webmasters en todo el mundo para la construcción de webs o blogs. (
  • Conformance calibration cards are a widely used industry tool designed to support the proper calibration of verifiers. (
  • One main issue that I see a lot of times - that doesn't always work - but it's an issue we look at: does the certificate actually identify who did the calibration sufficiently so that we could subpoena that person if we wanted to, if we wanted to ask them about the calibration, since you do have the right to confront the witnesses against you. (
  • OBs for this kind of calibration should be prepared within the 'CB' (Calibration Block) in p2, as no acquisition template needs to be specified in this case. (