DNPDG series electromagnetic flowmeter is composed of sensor and converter. It is based on Faraday's law of electromagnetic induction. It is used to measure the volume flow of conductive liquid. It is a speed meter. Besides measuring the volume flow of general conductive liquids, it can also measure the flow of strong corrosive liquids such as strong acid and strong alkali, and uniform liquid-solid two-phase suspension liquids such as mud, pulp and paper pulp.