Does the LGF-PA66 insulated body need grounding rings?

Conventional stainless steel electromagnetic flowmeters have conductive bodies, so grounding rings are often required to stabilise the zero point in low-conductivity media. The LGF-PA66 body is made of insulating composite, so the meter tube wall plays no part in the electrical circuit — no grounding rings needed, saving both parts and installation time.

The insulating body brings two extra benefits:

• No stray-current pickup from the pipeline, better zero stability.
• No electrochemical attack on the body, long-term accuracy retention.

Grounding for the LGF-PA66 focuses on the electrode signal reference and the cable shield: connect the converter ground terminal to the instrument earth system with resistance ≤ 4 Ω. In heavy stray-current sites such as arc-furnace workshops, add grounding electrodes on the upstream and downstream straight pipe sections.

For more information, please visit our product pages or contact our technical team.