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Rosemount™ OCX8800 Oxygen and Combustibles Transmitter
rosemount ocx 8800
The Rosemount OCX8800 Combustion Flue Gas Transmitter provides a continuous, accurate measurement of the oxygen and combustibles remaining in flue gases from a combustion process.
The time-tested and world renowned zirconium oxide sensor is the basis for the oxygen measurement. This, coupled with the new combustibles sensor can detect oxygen and combustibles concentrations in flue gases with temperatures up to 2600°F (1427°C).
Rosemount™ OCX8800 Oxygen and Combustibles Transmitter


Response Time
Oxygen: Up to 10 sec T90
Combustibles: Up to 25 sec T90
Process Temperature Range
Up to 2600 °F (1427 °C)
Ambient Temperature
-40 to 212 °F (-40 to 100 °C)
Probe Length Options from 18 in (0.46 m) to 9 ft (2.74 m)
Communication Protocol
4-20 mA HART, FOUNDATION Fieldbus
Hazardous location, see full specs for complete list of certifications


  • Oxygen and combustibles measurements in a single, easy-to-install transmitter design
  • Field-replacable sensors
  • HART®, FOUNDATION® fieldbus and AMS/PlantWeb® compatible
  • Air purge cycle and improves cell calibration and effectiveness
  • Optional factory built auto-calibration panel
  • Internal filter and additional in situ filters reduce maintenance intervals
  • Certifications: ATEX, FM, CSA Type4X/IP66, IECEx, CE, NEPSI