How does electromagnetic flowmeter work based on Faraday's law of electromagnetic induction?

Electromagnetic flowmeters operate on Faraday's law of electromagnetic induction, measuring flow by detecting the voltage generated when conductive fluid moves through a magnetic field. The working principle involves:

• Magnetic Field Generation: Excitation coils create an alternating magnetic field perpendicular to the pipe
• EMF Induction: Conductive medium cutting magnetic field lines generates induced EMF proportional to velocity
• Signal Detection: Electrodes detect induced voltage, converter amplifies and processes signals
• Flow Calculation: Flow rate calculated using E=BLV formula

Ecolor's LGF series electromagnetic flowmeters utilize low-frequency rectangular wave excitation technology, effectively suppressing power frequency interference with ±0.5% accuracy for precise measurement of various conductive liquids.