ABB”s Endura TBX587 Retractable pH sensor targets one-inch NPT process connections found in sample lines in refineries, chemical plants and other industrial applications. The temperature compensation element is located in the tip of the sensor to provide response times up to six times faster then conventional gel-filled pH sensors. An optional IP68 Vario Pin-style cable connector is designed to simplify sensor replacement without complicated wiring or terminal strips. The mechanical design of the pH sensor includes a large “T”-style handle to aid in insertion and retraction into pressurized process pipelines. The pH sensor is based on ABB’s solid-state Next Step Reference design. The Next Step Reference is designed to withstand chemical poisoning and buildup often found in strong chemical processes and slurries. 316 Stainless hardware is standard with options for Hastelloy and Titanium metallic fittings. This product, combined with ABB”s TB(X)557 low-pressure retractable sensor, TB(X)564 high pressure retractable sensor, and the TB18 Safe-T-Clean valve, support most insertion-style pH sensor installations.