How do I choose the electrode material for the LGF-PA66 electromagnetic flow meter — 316L, Hastelloy, or titanium?

Electrodes are the parts of an electromagnetic flow meter in direct contact with the medium, so their selection follows the medium composition, not the pipe material. The PA66 body of the LGF-PA66 is inherently corrosion-resistant, but a wrong electrode choice will still fail — the two must be evaluated separately.

• 316L stainless steel: for weakly corrosive media — municipal supply, raw water, domestic sewage. Stable below ~200 mg/L chloride; the standard choice for DMA district metering points.
• Hastelloy (HC/HB): for high-chloride media — seawater, salt-lake water, high-TDS groundwater — and dilute sulfuric/hydrochloric chemical streams. The default for seawater aquaculture and coastal power-plant cooling water.
• Titanium: outstanding resistance to chlorine and hypochlorite; suited to chlorinated tap water and loops dosed with sodium hypochlorite. Avoid it in concentrated hydrochloric or sulfuric acid.

Provide the medium's main ions, concentration, temperature, and pH, and our engineers match it against corrosion tables. All LGF-PA66 sizes (DN15–DN3000) accept all three electrode types; accuracy stays at ±0.5%（DN50-100） regardless of electrode material. With an EC32 RTU on telemetry, electrode polarization or empty-pipe faults surface promptly on the platform.

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