316 Stainless Steel Conductivity Electrode with 0.01 cm⁻¹ Cell Constant and 25 ft Cable for Ultra-Pure Water

Ultra‑Pure Water Conductivity/Resistivity Electrode — K=0.01 cm⁻¹, 316SS, 25 ft Cable

The +GF+ Signet 3‑2819‑1P‑025​ is a precision conductivity/resistivity electrode​ from the 2819 series, optimized for ultra‑low conductivity liquids​ such as RO/DI permeate, boiler condensate, and pharmaceutical‑grade water. Its cell constant K=0.01 cm⁻¹​ covers 0.055–100 µS/cm​ (resistivity 18.2 MΩ–10 kΩ, ≈0.02–50 ppm TDS) with ±2% of reading​ accuracy. The electrode uses 316 SS​ with PTFE insulation, EPR O‑ring, and a built‑in PT1000 RTD​ for automatic temperature compensation. The ‑1P‑025​ specifies a ¾" NPT reversible threaded​ inline/submersion mount with a ~7.6 m (25 ft)​ foil‑shielded 3‑wire cable, designed to pair with Signet 2850 sensor electronics / 8850–8860–8900–9900​ instrumentation chains.

Automation Role — Use Cases, Core Function & Advantages

Its core function is to deliver a temperature‑compensated conductivity (or resistivity) signal​ so the control system can enforce water‑quality interlocks, regeneration triggers, RO membrane performance monitoring, discharge/reject logic, and USP/WFI compliance logging. Typical deployments: RO/DI trains, semiconductor ultrapure‑water loops, boiler condensate, rinse‑water recovery, and pharmaceutical purified‑water systems. Advantages include no platinization maintenance, a controlled surface‑finish cell​ for repeatability, reversible ¾" NPT​ for flexible orientation, and optional NIST‑traceable certification​ for audit trails—making it the go‑to sensor wherever ionic purity = product integrity.

Product Specifications: +GF+ Signet 3-2819-1P-025