Flow Meters

Electromagnetic flowmeter measurement principle is based on Faraday's law of electromagnetic induction. Flowmeter measurement tube is a lining insulation of permeability alloys short tube. Two electrodes along diameter direction are through the wall on the measuring tube. The electrode head and the inner surface are approximately flush. Excitation coil pulse of both parties will be in a direction perpendicular to the measuring tube axis to produce a magnetic field of magnetic flux density B. At the same time, if a certain electrical conductivity of the fluid is flowing through the measuring tube, it will cut magnetic induction electromotive force E. Electromotive force E is proportional to the magnetic flux density B, sounding pipe diameter d and the average flow v. Electromotive force E (traffic signal) is detected by electrode and conveyed from the cable to the converter. Converter can display the fluid flow, output pulse and signals by flow signal amplification processing. It is used for flow control and regulation