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.