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NCSL International - Governance
Board of Directors
Qualifying a Check Standard for Infrared Thermometry Cal.
Frank Liebmann, Fluke Calibration
In the world of calibration, it is best practice to use check standards to assure the quality of calibrations. The check standard is used to determine if the reference standard has drifted by an unacceptable amount from its previous calibration. This helps the calibration laboratory to meet a requirement of Section 5.9 of ISO/IEC 17025. Ideally, the check standard is equal in repeatability to the reference standard. However, in some cases this is not practical due to various issues. In these cases, an instrument should be qualified to determine if it can be used as a check standard.
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