What Is Electromagnetic Flowmeter
Split electromagnetic flowmeter measurement principle is based on Faraday's electromagnetic induction law. The measuring tube of intelligent electromagnetic flowmeter is a non - conductive alloy short tube lined with insulating material. Two electrodes are fixed on the measuring tube along the pipe diameter through the pipe wall. The electrode head is basically flush with the inner surface of the liner. 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 when the excitation coil is excited by two pulse waves. At this point, if a fluid with a certain conductivity flows through the measuring tube. Induct the electromotive force E from the cutting magnetic field line. 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 velocity v. Electromotive force E(flow signal) is detected by the electrode and sent to the converter by cable. After amplifying and processing the flow signal, the converter can display the flow of fluid, and can output pulse,current and other signals for flow control and regulation.