System description Page 2/44
MID_M2000_BA_02_1004
2. System description
The electromagnetic flow meters are intended for the metering of all fluids with electric
conductivity of at least 5 μS/cm (20 μS/cm for demineralized water). These series of
meters is characterized by a high degree of accuracy. Measuring results depend on
density, temperature and pressure.
Measuring principle
In accordance with Faraday’s induction principle, electric voltage is induced in a conductor
moving through a magnetic field. In case of the electromagnetic flow measurement, the
moving conductor is replaced by the flowing fluid. Two opposite measuring electrodes
conduct the induced voltage which is proportional to flow velocity to the amplifier. Flow
volume is calculated based on pipe diameter.