Instrument Mesurement Knowledge

What is the Function of Grounding Ring of Electromagnetic Flowmeter?

Views: 5     Author: Site Editor     Publish Time: 2021-08-26      Origin: Site

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When do you need a grounding ring?

1. There is scattered current interference in the measured pipeline.

2. The tested pipeline is plastic or coated with insulating layer.

What is the function of grounding ring of electromagnetic flowmeter?

Accurate and stable measurement is based on the complete grounding of the magnetic flowmeter. The flowmeter with grounding ring eliminates the interference caused by dispersed current in the pipeline and can provide more reliable flow data.

Note:

  1. If the electromagnetic flowmeter is installed on plastic pipe or painted pipe, grounding rings must be installed at both ends of the sensor. Otherwise, the electromagnetic flowmeter cannot work normally.

  2. In the case of non-metallic piping, a grounding ring is necessary, otherwise the measured value will be unstable.

  3. In addition; different media also need to choose different materials of grounding ring, to meet the corrosion requirements. (Optional materials: stainless steel, Hastelloy, tantalum, etc.)

In short, according to Faraday's principle of electromagnetic induction, when the electromagnetic flowmeter selection of grounding electrode application can not meet the requirements of the field application, the magnetic field interference is large, you should choose to add a grounding ring to do grounding.


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ARTang is a global leader in measurement instrumentation, services and solutions for industrial process engineering that energizes the transformation of society and industry to achieve a more productive, sustainable future. We provide process solutions for flow, level, pressure, analytics and digital communications, optimizing processes in terms of economic efficiency, safety & environmental impact.

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