Calibration Of Measuring Instruments Pdf

The calibration of a measuring instrument allows d etermining the deviation of the.

Calibration of measuring instruments pdf.

A calibration can be executed e ither on a measuring instrument or system or on a measurement standard. Taylor and henry v. Hb 145 was developed as a source of calibration procedures for weights and measures laboratories and covered mass length and volume calibrations for field. Values of the measuring instrument used or a measurement standard are compared over one or several stages to this standard.

Where no such standards exist the basis used for calibration or verification shall be recorded. When calibration is successfully completed a calibration sticker is affixed to the instrument which contains the date the calibration was completed and the date the instrument is due for recalibration. 2 here is an introduction to a quick reference of reference gages that can be used as calibration standards and inspection tools available from mitutoyo as appropriate for maintaining the accuracy of precision measuring tools and instruments. In accordance with the ranking order of the standards from the.

Oppermann is out of print and the majority of content has been updated and published in the publications noted below. Typically the accuracy of the standard should be ten times the accuracy of the measuring device being tested. At each of these stages calibration with a standard pre viously calibrated with a higher ranking standard is carried out. The following explains the basic concepts with respect to calibration.

This document focuses on the determination of calibration intervals of measuring instruments. 5 1 a record is maintained of all repair and calibration action performed on the instrument. As instruments become more complicated successfully identifying and applying best practices can reduce business expenses and improve organizational capabilities. Nbs handbook 145 1986 handbook for the quality assurance of metrological measurements by john k.

Calibration in its most basic form is the measuring of an instrument against a standard. Measurement standards traceable to international or national measurement standards. However accuracy ratio of 3 1 is acceptable by most standards organizations.