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398/398VP pH/ORP Sensor

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

Use Models 398 and 398VP 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
  • 398VP Model Only - Variopol (VP8) cable connection option, for quick cable-to-sensor release, eliminates cable twisting
The chemical-resistant construction of Tefzel, titanium, and the patented TUpH™ reference junction makes Models 398 and 398VP the ideal sensors for measuring pH in harsh process liquids. 

Use Models 398 and 398VP 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
  • 398VP Model Only - Variopol (VP8) cable connection option, for quick cable-to-sensor release, eliminates cable twisting
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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
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Documentation

Data Sheets

Product Manuals

Certificates & Approvals

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