March 22, 2019 –Emerson’s Rosemount CT4400 Continuous Gas Analyzer is a purpose-built Quantum Cascade Laser (QCL) and Tunable Diode Laser (TDL) analyzer designed to help plants report emissions accurately in environmental monitoring applications measuring standard components, such as nitric oxide (NO), nitrogen dioxide (NO 2 ), sulfur dioxide (SO 2 ), carbon monoxide (CO), carbon dioxide (CO 2 ), and oxygen (O 2 ).
Optimized for cold and dry applications running at ambient pressure, the Rosemount CT4400 analyzer offers QCL/TDL technology in a configuration that allows integration into existing plant infrastructure.
Because the systemcan hold up to four laser modules, it can measure up to seven application-specific gas components simultaneously, providing flexibility in continuous emissions monitoring systems (CEMS) applications.
At the heart of the Rosemount CT4400 is Emerson’s QCL technology, which detects gas molecules in both the near- and mid-infrared wavelength range. The system employs a patented laser chirp technique that enables detection of individual gas species, free from the cross-interference effects of other gas components in the stream, making the measurement stable down to sub ppm concentrations.
