The difference between calibration and verification is the purpose, object, nature, basis, mode, cycle, content and other seven different aspects.
1, the purpose of different
Calibration is mainly used to determine the error in the value of measuring instruments.
Testing is the measurement of measuring instruments for comprehensive assessment of performance, to determine whether it is qualified for all the work.
2, different objects
Calibration of the object is mandatory outside of the measuring instruments.
The object of verification is the measurement of China's measurement law clearly stipulates the mandatory verification of measuring instruments.
3, the nature of the different
Calibration is not mandatory, is a unit of voluntary traceability behavior.
The calibration is mandatory, belonging to the scope of legal measurement management.
4, based on different
Calibration is based on the laboratory according to the actual need to develop their own "calibration specifications", or refer to the "verification procedures" and other technical literature requirements.
The basis for verification is "measurement and verification procedures", which is measured by the verification must follow the technical regulations.
5, different ways
Calibration can be used in the laboratory self-calibration, external school, or self-calibration and external school combined.
The calibration must be carried out by the statutory metrological verification bodies, or authorized metrological verification bodies.
6, the cycle is different
Calibration cycle by the laboratory according to the use of measuring instruments to determine the needs of their own.
Testing cycle must be in accordance with the provisions of the "test regulations" by the measurement of the calibration work to determine the metrological verification body, the test cycle is a mandatory constraints on the content.
7, the content of different
Calibration of the content and the project, but only to assess the value of the measuring instrument error, in order to ensure the accuracy of the value.
The content of the verification is the measurement of measuring instruments for comprehensive assessment of the performance to ensure that the measuring instruments are qualified and effective.