Purpose:
Calibration - to determine for themselves the accuracy of monitoring and measuring devices. It is a bottom-up traceability of quantitative values and evaluation of the display value error.
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 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 care, 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 national unified provisions, or by the organization itself.
Checking - unified by the state authorized by the measurement department to develop calibration procedures.
Nature:
Calibration - not mandatory, voluntary traceability of the organization.
Testing - mandatory, is the legal measurement of the scope of management of law enforcement.
Period:
Calibration - by the organization according to the use of the need to determine their own, can be regular, irregular or before use.
Checking - implemented in accordance with the mandatory checking cycle prescribed by our laws.
Methods:
Calibration - can be self-calibration, external calibration or self-calibration and external calibration combined.
Checking - can only be carried out in the prescribed checking department or the organization with qualification by legal authorization.
Contents:
Calibration - evaluation of the error in the display value.
Testing - a comprehensive evaluation of the measurement characteristics, including the evaluation of the error of measurement.
Conclusion:
Calibration - not to determine whether the pass, only the evaluation of the error in the display value. Issue a calibration certificate or calibration report.
Checking - according to the range of error in the value of the test specification, to give a qualified or unqualified judgment. 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.