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In addition, this National Standard includes and updates the relevant calibration system requirements for measuring and test equipment described by the previous standards, Part II of ANSI/NCSL Z540.1-1994 (R2002) and Military Standard 45662A.
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This paper provides an introduction to the new ANSI/NCSL Z540.3 standard and its approach to prescribing requirements for a calibration system that controls the accuracy of the measuring and test equipment used to ensure that products and services comply with prescribed requirements. The new ANSI/NCSLI Z540.3 standard replaces Part II of the current standard, ANSI/NCSL Z540-1 (R2002). Z540.3 consists of six clauses, each of which is described: Scope; References; Terms and Definitions; General Requirements; Calibration System Implementation; and Calibration System Assessment and Improvement. This paper also discusses the three requirements that received the most interest and discussion during the development process: (1) Measurement decision risk criteria; (2) Test uncertainty ratios; and (3) Use of calibration laboratories accredited to ANS/ISO/IEC 17025.
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December 2022
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