An electromagnetic flowmeter consists of two parts: a sensor and a converter. It operates based on Faraday's law of electromagnetic induction and is used to measure the volumetric flow rate of conductive liquids with conductivity greater than 5 us/cm. It is an inductive instrument for measuring the volume flow rate of conductive media. In addition to measuring the volume flow rate of general conductive liquids, it can also be used to measure the volume flow of strong corrosive liquids such as strong acids and bases, as well as uniform liquid-solid two-phase suspended liquids such as slurry, mineral slurry, and pulp. It is widely used for flow meters in industries such as petroleum, chemical, metallurgy, light textile, papermaking, environmental protection, and food, as well as in municipal management, water conservancy construction, and river dredging.