Electromagnetic flowmeter is a flow measurement instrument based on Faraday's Law of Electromagnetic Induction, specifically designed to measure the velocity and flow rate of conductive liquids in pipes. The instrument features high precision, no mechanical resistance, and resistance to corrosion and wear, making it adaptable to acids, alkalis, slurries, and liquids containing solid particles. Electromagnetic flowmeters can achieve bidirectional measurement and provide various signal output methods, such as 4-20mA, pulse, or digital communication, facilitating remote monitoring and automated control. It is widely applied in fields such as water treatment, chemical industry, food and beverage, pharmaceuticals, electric power, and municipal engineering. During installation, it is necessary to ensure that the pipe is full of liquid, reliably grounded, and reserved with straight pipe sections to ensure measurement stability. Through regular calibration and maintenance, the electromagnetic flowmeter can maintain high precision, stability, and reliability in flow measurement over the long term.