Electromagnetic flowmeter working principle

2019/5/28 16:08:13

The working principle of the electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. When a conductor moves within a magnetic field, an induced electromotive force is generated at both ends of the conductor perpendicular to the direction of the magnetic field and the direction of motion. The magnitude of the electromotive force of the electromagnetic flowmeter is proportional to the speed of the conductor and the magnitude of the magnetic induction.
On the one hand, the electromagnetic flow converter provides a stable excitation current to the excitation coil of the electromagnetic flow sensor, and at the same time amplifies and converts the electromotive force induced by the converter into a standard current signal or a frequency signal, which facilitates the display, control and adjustment of the flow.