A combination sensor including pH, ORP (Oxidation Reduction Potential) and temperature within the sensor body, the Emerson Rosemount Analytical Model 3900 general-purpose pH/ORP sensor is designed to measure aqueous solutions in pipelines, open tanks and ponds. It functions at sub-zero temperatures, providing accurate measurements in applications from -10ºC to 100ºC, and is equipped for both 3/4- and 1-in. mounting, allowing it to fit into smaller pipes. A Teflon double-junction reference electrode protects the sensor from poisoning ions. The complete encapsulation of the sensor eliminates leakage and high-humidity problems.
Emerson Process Management; www.emersonprocess.com