Working principle of split electromagnetic flowmeter
The split electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. Measuring tube is non magnetic alloy tube a lined with insulation. Two electrode along the diameter management through the tube wall is fixed on the measuring tube. The electrode head and the liner surface is substantially flush. The excitation coil consists of a bidirectional square wave pulse excitation, In the axis perpendicular to the direction of the measuring tube also generates a magnetic flux density of magnetic field of B. At this moment, in the event the liquid has specific conductivity throughout the measuring tube, cutting the Magnetic Induction EMF E. E electromotive force is proportional to the magnetic flux density, Merchandise measurements of tubing diameter D and typical speed v, Electric possible E (traffic signal) by electrode detection and through a cable sent to the converter. The converter will flow signal amplifying and processing. The split electromagnetic flowmeter can exhibit the fluid flow and output.
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