What should I watch out for when installing the LGF-PA66 electromagnetic flow meter? Straight-run and grounding requirements

The LGF-PA66 measures by Faraday's law of electromagnetic induction, so installation must guarantee a stable flow profile and reliable grounding — otherwise accuracy degrades noticeably.

• Straight runs: at least 5D upstream and 2D downstream (D = nominal diameter). After elbows, valves, or reducers, extend the upstream run to 10D or add a flow conditioner.
• Flooded pipe: never mount at the high point of the line where air collects; on vertical pipes, flow should run bottom-up so the measuring tube stays full.
• Grounding: the PA66 body is electrically insulating, so the pipe wall cannot serve as ground. Use the supplied grounding ring/electrodes with grounding resistance ≤10 Ω — otherwise stray currents in the network cause drifting readings.
• Signal cable: use the supplied shielded cable, ground the shield at one end only, and route it away from power lines.
• Zero calibration: after installation, run a zero calibration with the pipe flooded and flow stopped before commissioning.

For submerged installations (IP68 service), cable joints must be sealed accordingly. Pairing the meter with an EC32 RTU lets you monitor instrument health remotely and catch empty-pipe or low-conductivity faults early.

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