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Introduction to the selection of flow measurement methods and instruments

The electromagnetic flowmeters required for scientific experiments are not only numerous, but also extremely versatile. According to statistics, a large part of more than 100 varieties of electromagnetic and vortex flowmeters are needed for scientific research. They are not mass-produced and are sold in the market. Many scientific research institutions and large enterprises have set up special teams to develop special flowmeters, especially national defense. The department is more common. For example, chemical intermediate test, which is an intermediate link in chemical production. A chemical product must be tested by intermediate test from laboratory development to mass production. This test plant is nicknamed the factory that produces experimental data. The accuracy and reliability of the data is the first. One. The flow meter in the test plant is an indispensable instrument. Due to its small size, it is mostly small and micro flow measurement. As with the efficiency test of the engine, it needs to detect three parameters: pressure, temperature and flow. It is generally considered that the flow measurement is difficult because the use conditions are special, the flow block in front of the test piece is complicated and there is no straight pipe section arrangement, the fluid composition changes, and the flow is a pulsating flow.

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