T/LZZLXH 065-2021 The Management Specification for the Calibration and Traceability of Test Equipment

Scope

Main Technical Content: 5 Methods of Measurement Traceability for Testing Equipment 5.1 Calibration 5.1.1 Identification of Calibration Equipment 5.1.1.1 The following types of testing equipment used by inspection and testing institutions shall be subject to mandatory calibration: a) The highest-level metrological standard instruments used internally by inspection and testing institutions; b) Metrological instruments used for trade settlement, safety protection, medical health, and environmental monitoring, and listed in China's "Catalogue of Metrological Instruments Subject to Mandatory Management" with regulatory modes of V (mandatory calibration) or P+V (type approval + mandatory calibration); c) Other circumstances determined by national or local metrological laws and regulations as requiring mandatory calibration. 5.1.1.2 For testing equipment not subject to mandatory calibration, inspection and testing institutions may choose to trace it through calibration or verification methods, but after selecting calibration as the traceability method, they shall manage the equipment in accordance with the requirements of the corresponding metrological calibration regulations. 5.1.2 Preparation of Calibration Plans Inspection and testing institutions shall prepare calibration plans, which shall include the equipment name, model, unique identification number, factory serial number, accuracy/measurement uncertainty/maximum permissible error, calibration validity period (or last calibration date, calibration cycle), calibration institution, and storage location, etc. 5.1.3 Selection of Calibration Institutions For testing equipment subject to mandatory calibration, after reporting the list of mandatory calibration equipment to the local county (city) level market supervision and management departments, inspection and testing institutions shall apply for calibration to the statutory metrological calibration institutions or authorized metrological technic

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