Vortex flowmeter calibration | Vortex flowmeter application for mandatory inspection, no need to go for inspection. What impact does it have to go to another place for inspection

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What is the difference between the calibration and verification of vortex flowmeters? The main differences between the verification and calibration of vortex flowmeters are reflected in nine aspects: purpose, object, nature, basis, method, cycle, content, conclusion, and legal effect. Specifically, the purpose is different. Verification: Mandatory comprehensive evaluation of vortex flowmeters belongs to the category of unified measurement values, which is a top-down process of value transmission aimed at ensuring that the measuring device meets legal requirements. Calibration: Evaluate the indication error against the measurement standard to ensure the accuracy of the measurement value. It belongs to the bottom-up value traceability operation, focusing on meeting the internal use needs of the organization. Different verification objects: Only for mandatory verification measuring devices specified in Chinas metrology law (such as vortex flowmeters in trade settlement, safety protection, medical and health, environmental monitoring and other fields). Calibration: For measuring devices that are not subject to mandatory calibration, that is, devices that are voluntarily sent for inspection by organizations. Different types of testing: mandatory, belonging to the scope of legal metrology management, and is a law enforcement act. Calibration: It is not mandatory and is a voluntary traceability behavior of the organization, determined by the user independently. According to different verifications: It must be based on the National Verification Regulations, which are formulated by the national metrological administrative department and have uniformity and enforceability. Calibration: Based on the organizations own "Calibration Specification" or in accordance with the requirements of the "Verification Regulations", it has high flexibility. Different verification methods: It must be carried out by qualified metrology departments or legally authorized units, and individuals or unqualified institutions are not allowed to carry out it. Calibration: It can be done through organizational self calibration, external calibration (entrusted to a third-party organization), or a combination of self calibration and external calibration, which is more flexible. Different verification cycles: The verification cycle shall be strictly implemented in accordance with the "Verification Regulations", and the organization shall not adjust it on its own. Calibration: The cycle is determined by the organization based on factors such as usage requirements and equipment stability, and can be dynamically adjusted. Different content verification: Conduct a comprehensive evaluation of the vortex flowmeter, including all statutory items such as indication error, repeatability, initial stability, and sealing. Calibration: Only evaluate the indication error to ensure the accuracy of the measurement, without involving other non critical items. Conclusion: Different tests must be conducted based on the error range specified in the regulations, and a clear judgment of "qualified" or "unqualified" must be given. Calibration: Only provides measurement error data, does not determine whether the equipment is qualified, and the conclusion is a technical description. Different legal effects of verification: The conclusion has legal effect, and the verification certificate can be used as a legal basis for the legal use of measuring instruments, for law enforcement inspections or tra

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