Joint Test FMX-240 Compact Electromagnetic Flow Meter - Small and Compact in Appearance - Flexible Installation

The low-frequency square wave excitation design adopted by the electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. The two electromagnetic coils at the upper and lower ends in the figure generate a constant or alternating magnetic field. When a conductive medium flows through the electromagnetic flowmeter, an induced electromotive force can be detected between the left and right electrodes on the flowmeter tube wall. The magnitude of this induced electromotive force is proportional to the flow velocity of the conductive medium, the magnetic induction intensity of the magnetic field, and the conductor width (the inner diameter of the flowmeter measuring tube). The medium flow rate can be obtained through calculation.