Emerson introduces continuous gas analyser for accurate detection and analysis

Emerson has released the Rosemount CT5400 continuous gas analyser in response to the need for highly accurate, easy-to-use and cost-effective process gas analysis and emissions monitoring systems.

Uniquely combining tunable diode laser (TDL) and quantum cascade laser (QCL) technologies within the same analyser, the CT5400 uses a patented “laser chirp” to provide near-instant high-resolution spectroscopy to detect and identify a range of molecules in both the near and mid-infrared range of spectroscopic light with an enhanced dynamic range from sub ppm to percent levels.

“By using the chirp methodology, the Rosemount laser-based gas analysers have a significantly quicker response time and make continuous measurements,” said Ruth Lindley, product manager for Emerson QCL analysers.

“Sub-second measurements give operators the ability to make adjustments to their processes and avoid costly upsets that can develop into emergencies.”

Unlike traditional process gas analysers requiring continuous calibration and verification, the modular and scalable design of the CT5400 can incorporate up to six high-resolution laser modules and can detect, measure, and monitor up to 12 critical components simultaneously

This design eliminates the need for multiple analysers and sample handling systems and makes the CT5400 a high-accuracy, low-cost alternative.

“The measurement is direct or ‘first principle’, unlike many traditional technologies where the measurements are inferred. This improves accuracy and eliminates the need for frequent calibration, saving engineer time and substantially reducing running costs,” Lindley said.

The rack-mounted analyser is designed for process applications, DeNOX/SCR, ammonium nitrate precursors, continuous emissions monitoring systems (CEMS), and continuous ambient monitoring systems (CAMS).