Difference between calibration and verification:
1, the purpose of different
Calibration: the purpose of calibration is to assess the measurement device against the measurement standard, the error in the display value, to ensure that the value is accurate, belonging to the bottom-up traceability of the value of a group of operations.
Test: the purpose of the test is a mandatory comprehensive evaluation of the measuring device. This comprehensive evaluation belongs to the scope of the unification of quantitative value, is the top-down process of transmission of quantitative value.
2, different objects
Calibration: calibration of the object is mandatory outside the measurement device. China's non-compulsory calibration of measuring devices, mainly in the production and service delivery process using a large number of measuring instruments, including incoming inspection, process inspection and final product inspection of measuring instruments used.
Check: the object of verification is the measurement of China's measurement law clearly stipulates the mandatory verification of measuring devices.
3, the nature of the different
Calibration: calibration is not mandatory, belonging to the organization's voluntary traceability behavior. This is a technical activity, according to the actual needs of the organization, the evaluation of measuring instruments, measuring instruments or standard substances for the value of the process. Organizations can specify the calibration specification or calibration method according to the actual needs. Self-regulation of calibration cycle, calibration marks and records.
Checking: checking belongs to the mandatory law enforcement behavior, is the scope of the legal measurement management. Which the verification protocol agreement cycle and so on all in accordance with legal requirements.
4, based on different
Calibration: calibration of the main basis for the organization in accordance with the actual needs of their own development of the "calibration specification", or with reference to the "test procedures" requirements.
Check: the main basis for verification is "measurement and verification procedures", which is the measurement of equipment must comply with the statutory technical documents.
5, different ways
Calibration: calibration can be used to organize the organization's self-calibration, external school, or self-calibration and external school combined. Organizations in the case of conditions, you can use the self-calibration of measuring instruments calibration, thus saving greater costs.
Checking: checking must be qualified to the measurement of the department or the statutory authorization of the unit. According to the status quo in our country, the calibration belongs to the statutory authorization, non-state organs or relevant departments are difficult to get authorization, even if the technical strength is sufficient.
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