Electromagnetic flowmeter is a type of flow meter frequently used in industry. It has great advantages in flow measurement. The electric current occurring in the electrodes in the structure of the electromagnetic flowmeter is directly proportional to the amount, that is, the speed, of the liquid passing through the flowmeter pipe. Here, magnetic field inner diameter and body coefficient are constant values.
You can get the correct dimension because the temperature, pressure, viscosity or density (fluidity) of the measured liquid won't affect the flow rate of the liquid.