Working principle: Based on Faraday's law of electromagnetic induction. In the electromagnetic flowmeter, the conductive medium in the measuring tube is equivalent to the conductive metal rod in the Faraday test. The two electromagnetic coils at the upper and lower ends produce constant magnetism. When a conductive medium flows through, an induced voltage is generated. Two electrodes inside the pipe measure the induced voltage generated. The measuring pipeline is electromagnetically isolated from the fluid and the measuring electrode through a non-conductive lining (rubber, Teflon, etc.).

 

Working characteristics: ①Has a two-way measuring system; ②The straight pipe required by the sensor is shorter, and the length is 5 times the pipe diameter. ③Small pressure loss ④Measurement is not affected by changes in fluid density, viscosity, temperature, pressure and conductivity ⑤Mainly used in sewage treatment.