Below is video tutorial about electromagnetic flow meters. On this tutorial demonstrate the features of electromagnetic flow meters. Electromagnetic flow meters is widely used in conductive liquids such as water, acid and alkalies.
Electromagnetic flow meters is using the principle of Michael Faraday 1832 discovery. When any liquid move into the magnetic field, a voltage is produced. How big the voltages in depend on the volume flow rate. The voltage is detected by electrode. this electrode transfers the voltage signal to the processing electronic where can be converted into usable industrial standard signal.