Magnetic Flow meter

Magnetic Flow Meter is a flow meter that measures the flow of conductive fluids, which abbreviated as EMF, also called Electromagnetic flowmeters. It is a kind of Volumetric flow meter. A magnetic flow meter measures the velocity of conductive liquids moving through a pipe or conduit. Mag flow meter can not only measure the volume flow of conductive liquid, but also measure the volume flow of corrosive liquid such as strong acid and alkali, and even liquid-solid two-phase suspension liquid such as mud, pulp and pulp.

The measurement principle of magnetic flow meters is based on Faraday’s law of electromagnetic induction. The measuring tube of the flowmeter is a non magnetic alloy short tube lined with insulating material. Two electrodes are fixed on the measuring tube through the tube wall along the diameter direction. The electrode head is basically flush with the inner surface of the lining. When the excitation coil is excited by dual wave pulses, a working magnetic field with a magnetic flux density of B will be generated in the direction perpendicular to the axis of the measuring tube. At this point, if a fluid with a certain conductivity flows through the measuring tube. Induct the cutting magnetic field line to generate electromotive force E. The electromotive force E is proportional to the magnetic flux density B, and the product of the inner diameter d of the measuring tube and the average flow velocity v. The electromotive force E (flow signal) is detected by the electrode and sent to the converter through a cable. After amplifying and processing the flow signal, the converter can display the fluid flow rate and output signals such as pulses and analog currents for flow control and regulation.