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Rosemount-398R Retractable pH ORP Sensor

Rosemount™ 398R Retractable pH/ORP Sensor

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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
Temperature Range
32 - 212 °F (0 -100 °C)
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)

Features

  • Superior chemical resistance allows pH sensor and 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 and cracking resistant glass for a long pH/ORP sensor life

Documents & Drawings

Parts & Accessories

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23240-00
Rosemount™ Ball Valve Assembly, 316 Stainless Steel, 1.5" (Process connector required)
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2002565
Rosemount™ Mounting Bracket Kit
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23765-00
Rosemount™ 1.25" Ball Valve Assembly
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9210013
Rosemount™ Buffer Solution, pH 6.86, 16 oz
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23557-00
Rosemount™ Preamplifier for Remote Weatherproof Junction Box
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9210014
Rosemount™ Buffer Solution, pH 9.18, 16 oz
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23166-00
Rosemount™ Connector, 1" x 1" 316 SS, with O-ring Groove
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9310100
Rosemount™ Ferrule, 1" Tube, PTFE
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23166-01
Rosemount™ Connector, 1" x 1" Titanium, with O-ring Groove
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9310102
Rosemount™ Close Nipple - 1-1/2" Ball Valve
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