The difference between verification and calibration of measuring instruments
2016/04/29 Technology Exchange
BACK
Auditors and enterprises how to grasp the calibration and verification of measuring instruments? Please refer to the calibration and verification of the nine major differences:
1. The purpose is different
The purpose of calibration is to control the measurement standards, measuring equipment, indicating the value of error, to ensure accurate value, is a bottom-up source of a group of operations.
The purpose of the test is to make a comprehensive mandatory measurement device. This comprehensive assessment is the scope of the unity of value, is the top-down value transfer process. The test shall assess whether the metering device complies with the specified requirements.
(2) Different objects
The object of calibration is a measuring device that is outside the mandatory verification. •
The object of the test is the measuring device which is stipulated by China's measurement method.
(3) Different properties •
Calibration is not mandatory, belonging to the organization voluntary traceability behavior. This is a technical activity that evaluates the indication error of a measuring instrument according to the actual needs of the organization and establishes the process for setting the measuring instrument or reference material. In this case,
Verification is a mandatory law enforcement behavior, is a legal system of measurement management. Which the verification protocol agreement cycle, all according to legal requirements.
(4) according to different
Calibration is based on the organization according to actual needs to develop their own "calibration standard", or refer to the "verification procedures" requirements.
The main basis for the verification is the "measurement verification procedures", which is metering equipment must comply with legal technical documents. Among them, the measurement of the test equipment is usually the cycle, measurement characteristics, test items, test conditions, test methods and test results to provide for.
(5) in a different manner
Calibration methods can be used to organize self-school, outside school, or self-school plus a combination of the way the school.
Verification must be carried out by a qualified metrological authority or a legally authorized entity.
(6) cycle is different
The calibration period is determined by the organization according to the needs of the measuring instrument. Can be calibrated on a regular basis, can also be calibrated from time to time, or calibrated before use. The calibration cycle should be based on the principle that the minimum calibration cost should be maintained while minimizing the risk of measuring equipment during use. The period of calibration can be determined based on the frequency of use or the degree of risk of the metering device.
The verification period must be in accordance with the provisions of the "verification procedures", the organization can not determine. The verification cycle is a mandatory constraint.
(7)
Calibration of the contents and projects, but the assessment of measuring device indication error, to ensure the accuracy of the value.
The content of the test is a comprehensive assessment of the measuring device, requiring more comprehensive, in addition to including the entire contents of the calibration, the need to test the project.
(8) Conclusion is different
The conclusion of the calibration is only to assess the value of the measurement error of the device to ensure that the value is accurate, does not require a qualified or unqualified judgment. The results of the calibration can be given "calibration certificate" or "calibration report."
The test must be based on "verification procedures" within the scope of the value of the error, given the measurement device qualified and unqualified judge. Beyond the "verification procedures," the provisions of the value of the scope of the error value is unqualified, within the provisions of the amount of error in the range of qualified. The result of the test is to give a "certificate of conformity".
(9) the legal effect is different
Calibration results do not have the legal effect, given the "calibration certificate" is only marked amount of error, is a technical document.
The conclusion of the test has the force of law and can be used as the legal basis for the verification of measuring instruments or measuring devices. The "certificate of conformity" is a technical document with legal effect.
1. The purpose is different
The purpose of calibration is to control the measurement standards, measuring equipment, indicating the value of error, to ensure accurate value, is a bottom-up source of a group of operations.
The purpose of the test is to make a comprehensive mandatory measurement device. This comprehensive assessment is the scope of the unity of value, is the top-down value transfer process. The test shall assess whether the metering device complies with the specified requirements.
(2) Different objects
The object of calibration is a measuring device that is outside the mandatory verification. •
The object of the test is the measuring device which is stipulated by China's measurement method.
(3) Different properties •
Calibration is not mandatory, belonging to the organization voluntary traceability behavior. This is a technical activity that evaluates the indication error of a measuring instrument according to the actual needs of the organization and establishes the process for setting the measuring instrument or reference material. In this case,
Verification is a mandatory law enforcement behavior, is a legal system of measurement management. Which the verification protocol agreement cycle, all according to legal requirements.
(4) according to different
Calibration is based on the organization according to actual needs to develop their own "calibration standard", or refer to the "verification procedures" requirements.
The main basis for the verification is the "measurement verification procedures", which is metering equipment must comply with legal technical documents. Among them, the measurement of the test equipment is usually the cycle, measurement characteristics, test items, test conditions, test methods and test results to provide for.
(5) in a different manner
Calibration methods can be used to organize self-school, outside school, or self-school plus a combination of the way the school.
Verification must be carried out by a qualified metrological authority or a legally authorized entity.
(6) cycle is different
The calibration period is determined by the organization according to the needs of the measuring instrument. Can be calibrated on a regular basis, can also be calibrated from time to time, or calibrated before use. The calibration cycle should be based on the principle that the minimum calibration cost should be maintained while minimizing the risk of measuring equipment during use. The period of calibration can be determined based on the frequency of use or the degree of risk of the metering device.
The verification period must be in accordance with the provisions of the "verification procedures", the organization can not determine. The verification cycle is a mandatory constraint.
(7)
Calibration of the contents and projects, but the assessment of measuring device indication error, to ensure the accuracy of the value.
The content of the test is a comprehensive assessment of the measuring device, requiring more comprehensive, in addition to including the entire contents of the calibration, the need to test the project.
(8) Conclusion is different
The conclusion of the calibration is only to assess the value of the measurement error of the device to ensure that the value is accurate, does not require a qualified or unqualified judgment. The results of the calibration can be given "calibration certificate" or "calibration report."
The test must be based on "verification procedures" within the scope of the value of the error, given the measurement device qualified and unqualified judge. Beyond the "verification procedures," the provisions of the value of the scope of the error value is unqualified, within the provisions of the amount of error in the range of qualified. The result of the test is to give a "certificate of conformity".
(9) the legal effect is different
Calibration results do not have the legal effect, given the "calibration certificate" is only marked amount of error, is a technical document.
The conclusion of the test has the force of law and can be used as the legal basis for the verification of measuring instruments or measuring devices. The "certificate of conformity" is a technical document with legal effect.
