Electromagnetic flowmeter has become one of the flow meters for measuring media in chemical enterprises. As long as the liquid has a certain conductivity, the electromagnetic flowmeter can be used to stop the flow measurement. Electromagnetic flowmeters are used most in conductive liquids such as water, sewage, sulfuric acid, ammonia and so on. Electromagnetic flowmeter is different from the volume of the flowmeter, the operation of the electromagnetic flowmeter depends on the supply of power, the needle on different working conditions, the power supply method of the flowmeter is now mainly three kinds, respectively, 220V AC power supply, 24V DC power supply and battery (mainly high-function lithium battery) power supply.

1. 220V power supply, electromagnetic flowmeter is now the most used, the general industrial site has 220V power supply, the flowmeter only needs to stop the equipment according to the request, no need to install other equipment, on the power can stop the operation. 220V power supply electromagnetic flowmeter can be made into one type or split type.

2. 24V power supply electromagnetic flowmeter is mainly used in industrial sites do not allow the use of communication electricity or from the safety aspect to consider the selection of low-voltage direct current, or flow distribution integrator by the integrator to electromagnetic flowmeter suspended power supply.

3. Battery power supply is in the case of no external power supply at the scene, or in the case of safety at the scene to make battery power supply, you can flash instantaneous flow, cumulative flow, you can save the cost of dragging the power supply, in a more remote environment this battery power supply method is particularly important