Electromagnetic Flowmeter

Electromagnetic Flowmeter

Working principle

Based on Faraday’s electromagnetic induction law. In the electromagnetic flowmeter, the conductive medium in the measuring tube is equivalent to the conductive metal rod in the Faraday test, and the two electromagnetic coils at the upper and lower ends generate a constant magnetic constant. When a conductive medium flows, an induced voltage is generated. The two electrodes inside the pipe measure the induced voltage generated. The measuring tube is electromagnetically isolated from the fluid and the measuring electrode by a non-conductive inner liner (rubber, Teflon, etc.).

Working characteristics

1.With a two-way measurement system;

2.The sensor requires a short straight section and a pipe length of 5 times the length;

3.The pressure loss is small;

4.Measurements are unaffected by changes in fluid density, viscosity, temperature, pressure, and conductivity;

5.Mainly used in sewage treatment.


Post time: Jun-29-2019