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Rosemount™ CT4000 Ruggedized OEM Gas Analyzer
rosemount ct4000
Emerson's Rosemount CT4000 uses built-in Quantum Cascade Laser (QCL) technology to monitor NO, NO2, SO2, CH4, H2O, CO and CO2 levels in ambient environments of up to 70°C (158°F) and gas temperatures of 190°C (374°F).
Applications for this system include emissions monitoring, power plant emissions monitoring, engine management, engine combustion tools, engine health management and carbon trading.
Rosemount™ CT4000 Ruggedized OEM Gas Analyzer


Ambient Temperature
-20 to +70 °C (-4 to 158 °F)
Humidity Range
10 to 95 %, non-condensing
Power Supply
120 VAC 60 Hz / 240 VAC 50 Hz 250 V/A
23 x 19 x 45 cm (9 x 8 x 18 in.) [H x W x D]
26 kg (57 lbs)
Sample Gas Temperature
20 to 190 °C (68 to 374 °F)


  • Combines Quantum Cascade Laser (QCL) and Tunable Diode Laser (TDL) technology
  • Measures up to ten components simultaneously
  • Ambient temperature -20°C to +70°C (-4°F to 158°F)
  • Gas temperatures up to 190°C (374°F)
  • Modular configuration for up to four lasers
  • No moving parts, low maintenance cost