LGF-PA66 electromagnetic flow meter vs turbine flow meter: which one should I use for clean water?

Both meters handle clean conductive water, but their construction leads to very different field behavior.

Turbine meters use an impeller in the flow path to generate pulses. They are accurate (±0.5%–±1.0%), but the rotor is a wearing part: particles, scale and rust can jam it, low flow may never overcome bearing friction (a dead start-up band), and the constriction creates permanent pressure loss. On raw water carrying algae or floc, turbine bearings typically last only 1–2 years.

The LGF-PA66 electromagnetic flow meter has an unobstructed measurement tube with no moving parts — only the liner and electrodes touch the medium. It is immune to particles and fibers, pressure loss is near zero, turndown reaches 100:1, and accuracy holds at velocities down to 0.3 m/s, which matches the strong day/night flow swings of supply networks. The aviation-grade PA66 composite body is roughly 60% lighter than a stainless body of the same size, cannot corrode, and the IP68 design allows submerged pit installation.

• Turbine meter: small-bore (DN4–DN40) batching of oil products or ultra-pure water.
• LGF-PA66: DN15 and above for potable water, reclaimed water and industrial water — especially custody-transfer points and DMA district meters.

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