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Understand the working principle of flowmeter

by:Sure     2020-06-19
Working Principle: based on Faraday's law of electromagnetic induction. In an electromagnetic flowmeter, the conductive medium in the measuring tube is equivalent to the conductive metal rod in Faraday test. The two electromagnetic coils at the upper and lower ends produce constant magnetism. When the conductive medium flows, an induced voltage is generated. The two electrodes in the pipeline measure the induced voltage generated. The measuring tube passes through a non-conductive lining (Rubber, polytetrafluoroethylene, etc)Electromagnetic isolation from fluid and measuring electrodes. Working characteristics: two-way measurement system; The straight pipe section required by the sensor is short and the pipe diameter is 5 times the length. Small measurement of pressure loss is not affected by changes in fluid density, viscosity, temperature, pressure and conductivity, and is mainly used for sewage treatment. In the application of electromagnetic flowmeter, selection is a very important task. Some data show that in practical application, 2/3 of the faults are caused by incorrect selection or installation of electromagnetic flowmeter. Everyone shares the precautions in use. These knowledge points are applicable to the products of electromagnetic flowmeter manufacturers at home and abroad. Is the flowmeter inaccurate? Maybe this is wrong. Explain its working principle, selection and installation! Selection of electromagnetic flowmeter? The choice of instrument is based on the understanding of the principle and operating conditions of the instrument. The choice of electromagnetic flowmeter is no exception. The selection of electromagnetic flowmeter requires the following parameters the actual maximum working pressure of the measured medium parameters must be less than the rated working pressure of the electromagnetic flowmeter.
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