(1) The intent is different
The intent of the verification is to carry out a mandatory comprehensive appraisal of the measuring equipment. This comprehensive identification of areas attributed to the value of the same value is a top-down process of value transfer. The verification shall identify whether the measuring equipment meets the specified requirements.
This requirement is to measure the size of the error specified in the equipment verification regulations. After verification, it is determined whether the error scale of the measuring equipment is within the specified error scale.
The intention of calibration is to identify the indication error of the measurement equipment according to the measurement specification, ensure the accuracy of the measurement value, and attribute it to a set of operations that trace the value from the bottom up.
The identification of such indication errors should be made in accordance with the calibration procedures arranged, carried out according to the calibration cycle, and the calibration records and calibration marks should be made.
(2) The goals are different
The target of verification is the measurement equipment for compulsory verification clearly stipulated in China's metrology law. The objectives of the verification are mainly three categories of measuring equipment:
1. Measurement benchmark (including world measurement benchmark and ** measurement benchmark).
2. Metrological specifications.
3. The measurement law stipulates that 59 kinds of measuring tools are included in the compulsory inspection catalog.
The goal of calibration is to classify measuring equipment outside of the mandatory verification. China's non-mandatory verification of measuring equipment, mainly refers to a large number of measuring tools used in the process of production and service provision, including the measurement equipment used in purchase inspection, process inspection and final product inspection.
(3) Different in nature
The verification is a mandatory legal act and belongs to the field of legal measurement and management.
Calibration is not mandatory, but is a voluntary traceability arrangement.
(4) Depending on the difference
The primary basis for verification is the "** Metrological Verification Regulations" (JJG), which is a statutory technical document that must be adhered to for the verification of measuring equipment. These regulations are classified as metrological regulatory documents, and the arrangements do not have the authority to draw up, and it is necessary to be drawn up by the approved authorized metrology department.
The primary basis for calibration is to arrange the "Calibration Specification" drawn up according to the actual needs, or in accordance with the requirements of the "**Metrology Technical Specification" (JJF).
(5) The methods are different
It is necessary to carry out the verification to the qualified metrology department or the legally authorized unit. According to the current situation in China, most production and service arrangements do not have the qualification of verification, and only a small number of large-scale arrangements or professional metrology verification parts have this qualification.
The method of calibration can be carried out by arranging self-school, external school, or a combination of self-school and external school.
Under the condition of arrangement, the self-calibration method can be used to calibrate the measuring equipment, and then save a lot of money.
(6) The cycle is different
It is necessary to carry out the verification cycle in accordance with the provisions of the "Verification Regulations", and the arrangement cannot be confirmed by itself. The content of the verification cycle is subject to mandatory constraints.
The calibration interval is determined by the arrangement according to the needs of the measuring equipment used. It can be calibrated at a timed time, or at irregular intervals, or calibrated prior to use.
(7) The content is different
The content of the verification is a comprehensive appraisal of the measuring equipment, which requires a more comprehensive one, in addition to including all the contents of the calibration, it is also necessary to verify the relevant items.
The content and items of calibration only identify the indication error of the measurement equipment to ensure the accuracy of the measurement value.
(8) The conclusions are different
It is necessary to give a judgment of whether the measurement equipment is qualified or unqualified according to the scale of the measurement error specified in the "Verification Regulations". The scale of the error beyond the specified value of the "Verification Regulations" is unqualified, and it is qualified within the specified scale of the error of the value. The result of the verification is to give the "Certificate of Verification".
The conclusion of calibration only identifies the error of the measurement device, ensures the accuracy of the measurement, and does not require a pass or fail determination. The results of the calibration can be given as a "Calibration Certificate" or "Calibration Report".
(9) The legal effect is different
The conclusion of the verification has legal effect, which can be used as the legal basis for the verification of measuring appliances or measuring equipment, and the "Certificate of Conformity" is attributed to the technical documents with legal effect.
The conclusion of the calibration has no legal effect, and the "calibration certificate" given only indicates the error of the value and is attributed to a technical document.
From the above, it can be seen that the verification, calibration, and calibration are not completely independent, and the calibration process is included in the verification and calibration, and only the question of whether to give the calibration results is given.
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