Vortex flowmeter with supervision and inspection certificate
Qingdao Zhiyuan Instrument Co., Ltd. must obtain a specific special equipment license for the production of vortex flowmeters with supervision and inspection certificates. The special inspection institute will supervise and inspect the products. The release frequency f of the vortex flowmeter with TS certificate is proportional to the flow velocity v, so the instantaneous flow rate can be calculated by measuring the Karman vortex release frequency. Strouhal number is an important coefficient of vortex flowmeter. In the straight part of the curve where St ≈ 0.17, the release frequency of vortices is proportional to the flow velocity. Therefore, the detection frequency f can be used to obtain the flow velocity v, and the volume flow rate can be calculated from v. Explosion proof flow meters should be used in hazardous sites. Due to the fact that explosion-proof instruments are not allowed to be used in Class 0 hazardous areas, and explosion-proof instruments are not allowed to open the casing with electricity on site for circuit adjustment, users should try to use explosion-proof vortex flow meters. A sealing gasket with the same diameter as the pipeline should be installed in the inner groove of the flange, and the flow meter should be installed in the middle of the flange. The flow direction of the flow meter should be the same as the fluid direction, and then bolted to the anti-seismic vortex flow meter. After experiencing wind and rain, the vortex flow meter has gradually emerged from its low point and embarked on a stable development path. With the development of national economic construction, the application of vortex flow meters in various fields is gradually expanding. When installing liquid flow meters on horizontal pipelines, if the measured liquid contains a small amount of gas, the sensor should be installed at a lower position in the pipeline. Here.
