Magnetic Flow Meter
Magnetic flow meters function under the principles of Faraday's law of electromagnetic induction. According to this law, a conductor that passes through a magnetic field produces voltage proportional to the relative velocities between the magnetic field and the conductor. The law can be applied to flow meter systems because many fluids are conductive to a certain degree. The amount of voltage they generate as they move through a passage can be transmitted as a signal measuring quantity or flow characteristics.