Magnetic Flow Meters

Magnetic flow meters, often called mag meters, measure the volumetric flow rate of conductive liquids using the principle of electromagnetic induction. As liquid passes through a pipe with an applied magnetic field, it generates a voltage that is directly proportional to its velocity; electrodes in the meter detect this voltage and convert it into a flow measurement. Because the measurement depends on electrical conductivity, mag meters are suitable only for conductive fluids such as water, slurries, acids, or wastewater, but not for hydrocarbons, deionized water, or gases. They have no moving parts, which makes them durable, low-maintenance, and well suited for harsh or corrosive environments. Offering good accuracy and reliability, magnetic meters are widely used in industries like water treatment, chemical processing, and food and beverage, though their use is limited to conductive liquids.