The electromagnetic flow meter is a velocity flow measurement device which measures the volume flow of conductive liquids. It not only has on-site display but also can output standard current signals for recording, adjustment and control, to realize automatic detection and long-distance signal transmission. It can measure the flow of liquids, pastes, and slurries in water, wastewater, chemical, fertilizer, dairy, food, beverage, pharmaceutical, medical, petrochemical, iron, steel, paper, mining,