
The measurement principle of electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. The measuring tube of the flow meter is a short tube of non-magnetic alloy lined with insulating material. Two electrodes penetrate the tube wall along the diameter direction and are fixed on the measuring tube. The electrode tip is basically flush with the inner surface of the liner. When the excitation coil is excited by a bidirectional square wave pulse, a working magnetic field with a magnetic flux density B will be generated in the direction perpendicular to the axis of the measuring tube. At this time, if the fluid with a certain conductivity flows through the measuring tube, it will cut the magnetic field lines and induce electromotive force E. The electromotive force E is proportional to the product of the magnetic flux density B, the inner diameter of the measuring tube d and the average flow velocity V. The electromotive force E (flow signal) is detected by the electrode and sent to the converter through the cable. After the converter amplifies the flow signal, it can display the fluid flow, and can output pulses, simulated current and other signals for flow control and regulation.
Our company's main products include Electromagnetic flowmeter、Ultrasonic cold or heat flowmeter、Open channel flowmeter、Electromagnetic cold or heat flowmeter.
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Main Product:
flowmeter,
level instrument ,
temperature instrument,
digital indicator,
radar level gauge,
wires and cables