The FM230 electromagnetic flowmeter is a major flow meter, consisting of a sensor and a converter. It operates based on Faraday's law of electromagnetic induction and is used to measure conductive liquids or two-phase media. Generally, its conductivity should be greater than 25μs/cm(the original conductivity of tap water is approximately 25μs/cm). It can be used to measure various acid, alkali, salt solutions, pulp, ore pulp and other media, but the medium should not contain a large amount of ferromagnetic substances and a large number of bubbles.