The Rosemount 398R pH Sensor / ORP Sensor, with integral cable, features chemical-resistant construction of Tefzel™, titanium and a robust reference junction. This pH/ORP sensor is ideal for measuring pH in harsh process liquids like sour water strippers, pulp bleaching towers that use chlorine dioxide, and process streams containing a variety of organic solvents.
Measurement Range: pH Sensor: 0 to 14ORP Sensor: -1500 to +1500 mV
Operating Pressure: Hemi-bulb: 0 to 250 psig (0 to 17.24 barg)Flat-bulb: 0 to 100 psig (0 to 6.89 barg)
Max Operating Pressure: (at retraction or insertion)21 in. tube 64 psig (4.41 barg)36 in. tube 35 psig (2.41 barg)
Temperature Range: 32 - 212 °F (0 -100 °C)
Process Wetted Materials: Titanium, Tefzel™, glass, and choice of Kalrez®, Viton™, or EPDM; platinum (ORP sensor only)
US Dollar
British Pound
