Use of Electromagnetic Flowmeter Grounding Ring

Electromagnetic flowmeter grounding methods are many, four-fifth lining sensor can be fixed to the flange with a grounding ring flange, can protect the lining from damage, and some can also be connected to the sensor neck flange wire with Earth connection.

The following points need attention:

1. When electromagnetic flowmeters are installed on plastic pipes or pipelines with insulating paints and paints, grounding wires should be installed at both ends of the sensor to make the measured medium in the pipe short-circuit with the earth, with zero potential, otherwise the electromagnetic flowmeters cannot work properly. .

Second, electromagnetic flowmeter grounding ring should use stainless steel.

Third, the grounding point should be an independent acceptance point, not connected with the grounding of other equipment.

The electromagnetic flowmeter housing grounding is directly related to the measurement accuracy and stability, the grounding conductor must not conduct any interference voltage, so other electrical equipment should not be connected to the same grounding wire, the output part of the converter when the instrument leaves the factory The grounding wire has been set, as long as it is grounded as required. Because the sensor is connected to the metal pipe, the media in the metal pipe has a good electrical connection with the earth, so that the sensor can be installed without the ground wire. If there is more grounding When high demands are made or there is strong electromagnetic interference in the surrounding work environment, the ground wire can also be set independently.

During the use of the electromagnetic flowmeter, the flow rate displayed by the converter may be unstable and fluctuate. Especially in the case of pipeline interference currents, only good ground protection can ensure accurate measurement of electromagnetic flowmeters. Ungrounded does not affect the accurate measurement of the flowmeter. However, once the environment changes, it will cause the flowmeter to work accurately and stably. Therefore, it is best to install the grounding protection of the sensor during installation to create a good work environment for the electromagnetic flowmeter.