Electromagnetic flowmeters (EMF) have been used for continuous flow measurement in industrial applications for many years. They are ideally suitable for liquids with an electrical conductivity greater than 5 μS/cm. In addition to water and waste water, other contaminated liquids are typical areas of application.

The underlying measuring principle of the EMFs is based on Faraday's law of induction. 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.

Our product range for flow measurement includes both "Insertion" and "Inline" EMFs in different versions. While the magnetic field in "Full Bore" or "Inline" versions extends over the entire pipe cross section, the magnetic field from the immersed sensor in the Insertion version is transmitted only to a part of the medium.