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398R/398RVP Retractable pH/ORP Sensor

Brand: Rosemount

The chemical-resistant construction of Tefzel®, titanium, and the patented TUpH™ reference junction makes Models 398R and 398RVP the ideal sensors for measuring pH in harsh process liquids. 

Use Models 398R and 398RVP to measure pH in sour water strippers, in pulp bleaching towers that use chlorine dioxide, and in process streams containing a variety of organic solvents.
Features
  • SUPERIOR CHEMICAL RESISTANCE allowing sensors to withstand applications containing chlorine dioxide and a wide variety of organic solvents and oxidizing agents
  • MINIMUM SENSOR MAINTENANCE due to TUpH reference technology which ensures long life in coating, fouling, and poisoning processes
  • MAXIMUM SENSOR LIFE due to helical reference pathway which hinders reference poisoning and cracking resistant glass

Specifications

Brand

Ambient Temperature Range

  • 0° to 100° C (32° to 212° F)

Measuring Range

  • 0 to 14 pH
  • ORP: -1,500 to 1,500 mV

NPT Connection

  • 1” NPT Male

O-Ring Material

  • EPDM
  • Kalrez
  • Viton

Pressure Range

  • psia: 14.5 to 264.69 (kPa: 100 to 1,825, bar: 1 to 18.25)
  • psig: 0 to 250 (kPa: 0 to 1,724, bar: 0 to 17.24)

Wetted Materials

  • EPDM
  • Glass
  • Kalrez
  • ORP Only: Platinum
  • Tefzel
  • Titanium
  • Viton

Documentation

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