The difference between calibration and verification of measuring tools is distinguished from the following aspects:
I.
Different in nature:Calibration is not mandatory and belongs to the voluntary traceability behavior of the organization; Verification is a mandatory law enforcement act and belongs to the category of legal measurement management.
Two.
Different objects:The object of calibration is a measuring device that is not subject to mandatory verification; The object of verification is the compulsory verification measuring device stipulated in the metrology law of our country.
three ,
Different purposes:Calibration belongs to bottom-up quantity-value traceability; Verification is to assess whether the measuring instrument meets the specified requirements, is a top-down value transfer process.
Four.
In different ways:The method of calibration can be organized self-calibration, external calibration, or the combination of self-calibration and external calibration. Verification must be carried out at a qualified metrological department or legally authorized unit. The calibration period shall be determined by the organization itself according to the needs of the use of measuring instruments, and the verification period shall be carried out in accordance with the provisions of the Verification Regulations.
V. Different conclusions:The conclusion of calibration is only to evaluate the measurement error of the measuring device to ensure the accuracy of the measurement value, and does not require the judgment of passing or failing; The qualified and unqualified of the measuring device must be given according to the error range of the measurement value stipulated in the verification Regulations.
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