What does a flow meter (housing) inspection certificate refer to?

The \"Rules for Supervision and Inspection of Pressure Pipelines\" (TSG D7006-2020) came into effect on September 1, 2020. This safety technical specification for special equipment includes components such as gas pressure regulating devices, temperature and pressure reducing devices, prefabricated pipe sections, and flow meters (housings) found in pressure pipelines within the scope of supervision and inspection for the manufacturing of such special equipment. Those that fall under the category of flowmeters (housings) are detailed in the group standard \"Specifications for Supervisory Inspection of Flowmeters (Housings) for Pressure Equipment\" T/CASEI 012-2022.

The flow meter (housing) inspection certificate refers to the certification obtained as a result of the supervision inspection carried out on the main part of the flow meter, namely the housing. In certain industries or sectors, such as oil and chemicals, the accuracy and reliability of flowmeters are of great importance; therefore, the manufacturing and use of flowmeters may be subject to strict inspection and monitoring by quality oversight agencies. “The “housing” here generally refers to the main structure of the flow meter, that is, the casing that surrounds the internal measuring elements. In some types of flowmeters, such as turbine flowmeters or electromagnetic flowmeters, the housing not only protects the internal sensitive components but is also likely to be directly related to the principle by which the flow rate is measured. As for which flowmeters can obtain a supervision certificate, this usually depends on the regulations of a specific ** or region. Generally speaking, any flowmeter used in commercial transactions, energy measurement, or critical industrial processes may require official certification and regular calibration. This ensures that the measurement results of the flowmeter are accurate and reliable, and are recognized in legal and commercial transactions. The claim that orifice plate flowmeters lack this certification is not accurate. A orifice plate flow meter is a differential pressure flow meter that operates on the principle of Bernoulli’s principle, and it is commonly used to measure the flow rate of liquids, gases, or steam. If a orifice plate flow meter is used in applications where statutory measurement is required, it also needs to undergo inspection and certification. Whether certification is required usually depends on the application of the flow meter and local regulatory requirements, rather than the type of flow meter. If a orifice plate flow meter is used in regulatory or commercially critical areas, it also requires a corresponding certification. .

The inspection certificate is determined based on your pipeline requirements and whether inspection is necessary; this usually needs to be specified to the manufacturer during the production of the flow meter. For orifice flow meters, a single-orifice type generally does not require inspection, while integrated orifice types or those with flanges do require such inspection