Calibration Of Measuring Instruments Pdf

The following explains the basic concepts with respect to calibration.

Calibration of measuring instruments pdf.

5 1 a record is maintained of all repair and calibration action performed on the instrument. Nbs handbook 145 1986 handbook for the quality assurance of metrological measurements by john k. Hb 145 was developed as a source of calibration procedures for weights and measures laboratories and covered mass length and volume calibrations for field. Calibration of measuring sensors and instruments.

The calibration of a measuring instrument allows d etermining the deviation of the. A calibration can be executed e ither on a measuring instrument or system or on a measurement standard. Calibration of measuring instruments on a coordinate measuring machine 131 calibration of reference gauge blocks by interferometry u 0 02 µm 0 2 10 6 l substitution measurement on cmm u 1 8 µm 4 10 6 l calibration of gauge rings u 0 4 µm 3 1 10 6 l calibration of thread ring pitch diameter. Where no such standards exist the basis used for calibration or verification shall be recorded.

Values of the measuring instrument used or a measurement standard are compared over one or several stages to this standard. As instruments become more complicated successfully identifying and applying best practices can reduce business expenses and improve organizational capabilities. This document focuses on the determination of calibration intervals of measuring instruments. 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. Measurement standards traceable to international or national measurement standards. At each of these stages calibration with a standard pre viously calibrated with a higher ranking standard is carried out. Taylor and henry v.

Calibration is a comparison between a known measurement the standard and the measurement using your instrument. Calibration in its most basic form is the measuring of an instrument against a standard. In accordance with the ranking order of the standards from the.