Electromagnetic Flow meter (EMF)

FLOW

Electromagnetic flowmeters (EMF), also known as magnetic meters, are a type of velocity or volumetric flow meter that operates on Faraday’s Law of Induction. They are ideally suitable for liquids with an electrical conductivity greater than n 5 μS/cm and are used in water, wastewater, or other contaminated liquids applications.

Being based on Faraday, the coils of the flowmeter generate a magnetic field orthogonal to the flow direction. According to Faraday’s law of induction, a conductive liquid passing through the magnetic field induces a current between the two electrodes, which can be used to measure the voltage. The higher the flow velocity, the higher the induced voltage. This voltage signal is converted into a standard signal (e.g. 4 – 20 mA or P) by the integrated electronics.