The Rosemount 397 TUpH pH sensor offers long life and high performance in pH measurements of aqueous solutions with high suspended solids. Housed in highly chemical‑resistant polypropylene body, completely sealed with EP (ethylene propylene) to eliminate process intrusion. Large area polypropylene reference junction resists process coatings in harsh, dirty, high solid applications. Secondary helical reference pathway provides added protection from poisoning ions.

ACCUGLASS with large glass bulb increases resistance to aging effects for longer life. Specifically designed for use with Quik‑Loc Kit; available without integral preamp. Preamplifier must be in remote location or integral to analyzer/transmitter.

TUpH reference junction maintains steady reference signal even in dirtiest applications, resisting plugging. Long internal helical reference pathway hinders contaminants (sulfide, mercury, cyanide, ammonia) from migrating to reference element. Temperature range 0–100°C, pressure range 0–100 psig.