Working principle of electromagnetic flowmeter

The measurement principle of the electromagnetic flowmeter is based on Faraday's electromagnetic induction law: when the conductive liquid moves to cut the magnetic line of force in the magnetic field, the induced potential in the conductor is E=KBVD

Where: acoustic wave ash removal

K --- Instrument constant

B --- Magnetic induction intensity

V --- Average flow velocity in the measurement pipe section

D --- Measure the inner diameter of the pipe section

When measuring the flow, the conductive liquid flows through the magnetic field perpendicular to the flow direction at the speed V, and the flow of the conductive liquid induces a voltage that is proportional to the average flow rate. The induced voltage signal is picked up by two or more electrodes that are in direct contact with the liquid, and sent to the converter through the cable for intelligent processing. Then the LCD displays or converts it into a standard signal of 4~20ma and 0-1khz for output.