Conductivity / Resistivity Electrode — Water/Aqueous
30+ years spec experience. Send James the process data and get a real answer — not a catalog page.
Request a Spec Review →Named chemicals
LibertyCES has documented Conductivity / Resistivity Electrode in Water/Aqueous service, including ultrapure water, distilled water and potable water. Wetted materials to confirm: 316SS with PEEK insulator and Flowline chart. Documented models include GF Signet 2818/2819 and 2820. Compatibility depends on exact concentration, temperature and duty cycle, so confirm with a free spec review.
Materials documented for this service
- 316SS or Titanium body with carbon-fiber-reinforced PTFE insulator and EPDM O-rings (2818-2821)
- CPVC body with 316SS electrodes (2822)
- 316SS with PEEK insulator (2823)
- PVDF insulator and process connection (2839-2842)
- Hastelloy-C, Monel and Titanium electrodes available on special order
- Flowline chart: 316SS rates F on saturated salt water at BOTH 40°C and 80°C, but E on sea water at both — a real, non-obvious divergence between two similar-looking aqueous media
Products cited for this service
Real Specifications
| Spec | Value | Source document |
|---|---|---|
| GF Signet 2818/2819 range/cell constant | 0.01 cell, 0.055-100 µS (18.2MΩ-10KΩ) | GF Signet — Instrumentation Product Range Brochure |
| GF Signet 2823 range/cell constant | 20.0 cell, 200-400,000 µS — only cell explicitly rated for acids/bases/concentrated chemicals | GF Signet — Instrumentation Product Range Brochure |
| GF Signet 2818-2821 max temperature/pressure | 100°C @ 6.9 bar (Polypro fitting) / 120°C @ 13.8 bar (SS fitting) | GF Signet — Instrumentation Product Range Brochure |
| GF Signet 2823 max temperature/pressure | 150°C @ 6.9 bar | GF Signet — Instrumentation Product Range Brochure |
| Flowline chart: 316SS rating, saturated salt water | F (poor) at both 40°C and 80°C | Manufacturer documentation on file |
| Flowline chart: 316SS rating, sea water | E (excellent) at both 40°C and 80°C | Manufacturer documentation on file |
Flowline's own compatibility chart shows 316SS is not interchangeable between two similar-looking aqueous media: it rates only 'F' (poor) against saturated salt water at both 40°C and 80°C but rates 'E' (excellent) against sea water at the same two temperatures — assuming 'salt water' and 'sea water' behave the same way against 316SS is a real, chart-documented mistake.
Every material and product claim on this page traces to real, vendor-published documentation on file with LibertyCES. Chemical compatibility depends on exact concentration, temperature, and duty cycle — confirm current specifications with the manufacturer and request a spec review before final specification.
FAQ
Can Conductivity / Resistivity Electrode handle Water/Aqueous?
LibertyCES has documented Conductivity / Resistivity Electrode in Water/Aqueous service.
What wetted materials should Conductivity / Resistivity Electrode use in Water/Aqueous service?
Materials documented for this service: 316SS or Titanium body with carbon-fiber-reinforced PTFE insulator and EPDM O-rings (2818-2821), CPVC body with 316SS electrodes (2822), 316SS with PEEK insulator (2823), PVDF insulator and process connection (2839-2842), Hastelloy-C, Monel and Titanium electrodes available on special order, Flowline chart: 316SS rates F on saturated salt water at BOTH 40°C and 80°C, but E on sea water at both — a real, non-obvious divergence between two similar-looking aqueous media. Compatibility depends on exact concentration, temperature and duty cycle, so confirm with a spec review before final specification.
Which Water/Aqueous chemicals does this cover?
Named chemicals in this documentation: ultrapure water, distilled water, potable water, cooling tower water, brackish water, sea water, salt water, acids/bases and concentrated cleaners (high cell constant only).
Which Conductivity / Resistivity Electrode models are documented for Water/Aqueous?
Documented examples include GF Signet 2818/2819 (0.01 cell, 0.055-100 µS, 18.2MΩ-10KΩ; R.O., ultrapure water, resistivity), 2820 (0.1 cell, 1-1000 µS; deionized/distilled), 2821 (1.0 cell, 10-10,000 µS; distilled/drinking water, cooling tower), 2822 (10.0 cell, 100-200,000 µS, CPVC body; wastewater, salinity, brackish, sea water), 2823 (20.0 cell, 200-400,000 µS, 316SS with PEEK insulator, 150°C @ 6.9 bar; the only cell explicitly rated for acids/bases, cleaners and other concentrated chemicals), 2839-2842 (PVDF insulator, dual-threaded, 131°C @ 2.76 bar), 2850 universal sensor electronics.
Ready to buy or need a fast answer? Call, text, or email James directly — (559) 395-5500 · [email protected].
Send James your spec
Fluid, concentration, temperature, flow or volume, and where it goes. James replies with a real answer, not a catalog page.
Reviewed by James Riggins, 30+ years specifying water and chemical process equipment · Updated