Generally determine whether the measurement instruments should be calibrated, need to meet the following two conditions:
(1) in the Chinese people *** and the State mandatory calibration of the work of measuring instruments within the detailed directory of the instruments;
(2) the field of measurement of the use of instruments are: trade calculations, safety and protection, medical and health, environmental monitoring.
Measuring instruments are used to directly or indirectly measure the value of the object to be measured devices, instruments, gauges and standard substances used to standardize the value. Measuring instruments are widely used in production, scientific research and people's lives and other aspects of the entire measurement of the legislation is in a rather important position. Because the unity of the value of the country, first reflected in the accuracy of measuring instruments, measuring instruments is not only the main object of supervision and management, but also the measurement of the technical basis of the department to provide measurement assurance.
Measuring instruments, is a legal, technical, instrumental for the community to serve the measurement tools. Measuring instruments in the production and manufacturing process and the use of maintenance process, the need for "verification, calibration, calibration or calibration" aspects of the operation and management.
Legal basis:
"Chinese People's Republic of China *** and the State Measuring Instrument Certification Management Measures"
Article VI of the mandatory verification cycle, the implementation of mandatory verification by the metrological verification institutions in accordance with the measurement of the verification procedures to determine.
Article VII belongs to the mandatory verification of the work of measuring instruments, not in accordance with the provisions of this approach to apply for verification or by the verification failed, any unit or individual shall not use.
Derivative questions:
What are the measuring instruments
Construction of the highest standard measuring instruments and for the transfer of the value of the work of measuring instruments, such as: the first level of flat crystals, zero-grade cutter rule, level meter checker, right-angled ruler checker, measuring tape checker, percentage meter checker, micrometer checker, self-collimating instrument, vertical optical meter, standard piston manometer.