Calibration Of Measuring Instruments Standards

The difference between the measured value and standard value helps to determine the instrument performance.

Calibration of measuring instruments standards.

Calibration standards are devices that are compared against less accurate devices to verify the performance of the less accurate devices. Calibration is the comparison of a measurement device an unknown against an equal or better standard. Calibration of the measuring instrument is the process in which the readings obtained from the instrument are compared with the sub standards in the laboratory at several points along the scale of the instrument. It is a comparison of the reading found from the instrument or measuring device and the known value or reference standard.

Specific recalibration intervals depend on a number of factors including. The process of calibration involves configuring an instrument to provide sample measurement results within an acceptable range. Calibration is intrinsic in risk based thinking in1 3 3 inputs and outputs in 4 4 1 the necessary infrastructure to accomplish this in 7 1 3 measurement traceability in 7 1 5 2 the actual word calibration is mentioned and performance evaluation in 9 1 just to name a few. The standard s accuracy varies depending on what is being calibrated.

As per the results obtained from the readings obtained of the instrument and the sub standards the curve is plotted. In general nist does not require or recommend any set recalibration interval for measuring instruments devices or standards. They must also be adjusted according to the instructions as provided by the manufacturer prior to being used to make accurate measurements. This activity requires that a comparison is made between a known reference measurement the standard equipment and the measurement using your instrument test instrument.

To begin the instruments that are used for measuring resources must always be calibrated in intervals before being used while following the specified standards in doing so. Traceability is obtained by calibration establishing the relation between the indication of the measuring equipment and the value of a measurement standard which in turn has an established relation to the definition of the si unit also obtained by calibration. Most professionals recommend using a calibration standard that is at least four times more accurate than the device being calibrated. Calibration of instruments and other measuring devices is done to verify its performance.

Accuracy requirements set by customers requirements set by contract or regulation. Hb 145 was developed as a source of calibration procedures for weights and measures laboratories and covered mass length and volume calibrations for field standards used in the commercial marketplace. Calibration fi nds out how far the unknown is from the standard. It is the one in the comparison taken to be the more correct of the two.

A standard in a measurement is considered the reference.