The role of electrode and grounding ring in the electromagnetic flowmeter.

The electromagnetic flowmeter is equipped with a grounding electrode and a grounding ring for safety reasons, grounding the electromagnetic flowmeter at work to avoid electric shock when the on-site staff touches the flowmeter.

Electromagnetic flowmeter grounding ring: The grounding ring directly contacts the medium through the grounding electrode, and then grounding the electromagnetic flowmeter flange through the grounding ring to eliminate interference and make the electrode signal better.

When the electromagnetic flowmeter sensor is installed on a metal pipe, and there is no insulating coating or lining on the inner wall of the metal pipe, the measured fluid potential is consistent with the measured line potential, and the grounding ring is not required. Because in this case, there is usually sufficient electrical contact between the sensor, the pipe connector, and the conductive medium. When the sensor is installed on a plastic pipe, on a pipe with an insulating coating, paint, or insulating lining, it must be Install a grounding ring or a wetted device with a grounding electrode on both ends of the sensor (this is another form of the grounding ring), so that there is sufficient electrical contact between the measured medium flowing in the main pipeline and the sensor housing to ensure electromagnetic flow The meter works normally.