(redirected from Calibrations)
Also found in: Dictionary, Thesaurus, Medical.


(kal-ă-bray -shŏn) A procedure carried out on a measuring instrument, such as a radio telescope, by means of which the magnitude of its response is determined as a function of the magnitude of the input signal. The calibration of a radio telescope provides an absolute scale of the output deflection against antenna temperature.


Process of adjusting equipment to ensure that operation is within design parameters.



a metrological operation by which an instrument of measurement (a standard or measuring device) is equipped with a scale or a calibration chart (curve). The graduations on the scale must correspond with the required accuracy to the values of the quantity being measured; the chart (curve) must reflect with similar accuracy the connection between the magnitude produced at the output of the device and the magnitude affecting the input—for example, the dependence of the electromotive force of a pyrometer’s thermocouple on the temperature of the operating junction. Calibrations are made by means of measurement that are more precise than the means of measurement being calibrated; the actual values of the measured quantity are established from the more precise means of measurement. Accurate means of measurement are calibrated individually; the less accurate ones are supplied with a standard scale printed beforehand or a standard calibration chart (curve). The use of such scales and standard calibration charts may at times make it necessary to regulate the means of measurement in order to reduce the error to some established norm.




verification of a measure or set of measures by taking a group of measurements.

Calibration consists in determining the error or correction of a group of gauges (such as a set of weights) or of a single multivalent gauge (such as a linear scale) for various combinations of the gauge or for various ranges of the scale. A comparison is made of the measures or of the sections of the scale in which one of the measures or scale values is taken as the basis of comparison.


Malikov, M. F. Osnovy metrologii, part 1. Moscow, 1949.
Amatuni, A. N. “Kalibrovka podrazdelenii shtrikhovykh mer.” In En-tsiklopediia izmerenii, kontrolia iavtomatiki (EIKA), issue 6. Moscow-Leningrad, 1966. Page 33.
References in periodicals archive ?
Newark element14 offers a proprietary, web-based calibration document management platform called CalWeb, which is designed to manage every aspect of a customers calibration and certification program.
This means that those delegated to witness calibrations would not have to be physically present.
The existing method was a multianalyte assay that involved the addition of a calibration solution containing deuterated internal standards (ISs) for 4 TCAs (amitriptyline, desipramine, imipramine, and NT) (15), but same chromatographic method was also used for a NT-only assay for the purposes of the current study.
When the scheduled calibrations are completed, the results are uploaded to the CMX analytical software for certification and then returned to the instrumentation database for documentation.
One of the errors includes the probing system calibration (stylus calibration) and it has a critical role in the CMM measurements, not only in terms of the functionality, but also in terms of the contribution towards the overall measurement error.
4 indicate how precisely the calibrations of the multimeters can be maintained by the established procedures.
Instrumentation manufacturing, calibration, testing and application teams are highlighted in this 16-page, four-color brochure.
Calibrations using the fixed load and its associated data-based model will have an accuracy approaching the accuracy of the system that characterized the fixed load.
While it is true that all facilities strive to provide the most accurate calibrations possible, there are some inherent differences in their performances due mainly to their method of traceability, physical configuration and operating conditions.
Manufacturers are turning to on-site calibration services with increasing frequency.
Chief among the advantages, according to Engel, is the ability to conduct continuous on-line adjustments of calibration parameters.