The electromagnetic flow meters operate based on the principle that they measure liquid flow through the measurement tube without any moving parts. These types of flow meters function using the principle of electromagnetic induction and can be widely used to measure water, sewage, chemical, process and other conductive fluids. Some of the considerations during the selection of electromagnetic flow meters include the conductivity of the fluid, pipe size, measurement precision, material of the liner and electrodes, pressure and temperature of operation, and installation conditions. There are several Indian suppliers of electromagnetic flow meters.