What are the advantages and disadvantages of electromagnetic flowmeter, 24V power supply and 220V power supply?
If the distance between the flowmeter and the control room is far away, it is better to choose 220VAC electromagnetic, because the cable is too long, the signal will be attenuated, and the external 220VAC power supply will be needed.
When the distance between the flowmeter and the control room is not far away, 24VDC electromagnetic can be selected, so that the power supply can be saved. When the cable is laid, the barrier is not added to the bridge;
