Electromagnetic Flow Meter for Water and Wastewater

Why are electromagnetic flow meters widely used for water measurement? The principle relies on Faraday’s law, where a conductive liquid moving through a magnetic field produces an induced voltage. Electrodes detect the generated signal, which is then processed to determine flow velocity and volumetric rate. Since there are no moving parts in contact with the liquid, this technology offers minimal pressure loss and reduced mechanical wear. Common applications include water supply, wastewater, effluent, sewage, and industrial utility systems.