Standard vortex flowmeter

『Standard vortex flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)

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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