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Rosemount-398RVP Retractable pH ORP Sensor

Rosemount™ 398RVP Retractable pH/ORP Sensor

Product Description

The Rosemount 398RVP pH Sensor / ORP Sensor 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.

Specifications

Measurement Range
pH Sensor: 0 to 14
ORP 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)

Features

  • Superior chemical resistance allows pH sensor / ORP sensor to withstand applications containing chlorine dioxide and a wide variety of organic solvents and oxidizing agents
  • Minimum maintenance due to robust reference technology helps ensure accurate pH/ORP measurement even in coating, fouling and poisoning processes
  • Helical reference pathway hinders reference poisoning for a long pH/ORP sensor life
  • Variopol (VP8) cable connection option, for quick cable-to-sensor release, eliminates cable twisting.

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