Purpose:
Calibration - the self determination of the accuracy of monitoring and measuring devices. It is a bottom-up approach to traceability and assesses the error in the displayed value.
Checking - mandatory comprehensive evaluation of measurement characteristics. Is the unity of measurement value, check whether it meets the requirements of the regulations. Top-down transfer of quantitative values.
Object:?
Calibration - in addition to the mandatory verification of measuring instruments and measuring devices.
Checking - the national mandatory verification: measurement reference apparatus; measurement standards; for trade settlement, safety and protection, medical and health, environmental monitoring of the work of measurement of seven categories **** 59 kinds.?
Based on:?
Calibration - calibration specifications or calibration methods, can be used in the unified national regulations, or by the organization itself.?
Checking - unified by the state-authorized metrological department to develop the calibration protocol.?
Nature:?
Calibration - not mandatory, is a voluntary traceability of the organization.?
Testing - mandatory, the legal measurement of the management of the scope of law enforcement.
Contents:?
Calibration - evaluation of the error in the value.?
Testing - a comprehensive evaluation of the measurement characteristics, including the evaluation of the value error.
Conclusion:?
Calibration - not to determine whether the pass or fail, only evaluation of the error of the indicated value, issued a calibration certificate or calibration report.?
Checking - based on the range of error in the measurement value specified in the checking procedure, give a qualified or unqualified judgment, and issue a certificate of conformity.?
Legal effect:?
Calibration - calibration conclusions are not legally binding technical documents.
Testing - the conclusion of the test is a legally binding document, as a measuring instrument or measuring device test legal basis.