New gas analyser tech aims to ‘redefine’ environmental monitoring

A new gas analyser from US-based Process Insights aims to ‘redefine’ environmental monitoring by delivering continuous, real-time monitoring of carbon dioxide (CO2) methane and water.

The T-I Max AIR Cavity Ring-Down Spectroscopy (CRDS) analyser uses the company’s TIGER OPTICS technology to meet standards set by the World Meteorological Organisation (WMO).

Capable of measuring atmospheric concentrations for each analyte in parts-per-billion (ppb), the device reports dry mole fraction –  the number of CO2 molecules in a given number of molecules of. air, after removal of water vapour.

“Its resilience to common interference solidifies its reputation as a consistently reliable choice for air quality and GHG monitoring,” stated the company.

“TIGER OPTICS CRDS gas analysers from Process Insights monitor thousands of critical points for industrial and scientific applications. They serve the world’s national metrology institutes, where they function as transfer standards for the qualification of calibration and zero gases.”

©Process Insights

Gas analysers are essential when it comes to measuring the concentration of a specific gas within a mix of gases.

CRDS is a sensitive analytical technique used to measure the concentration of trace gases in a sample. Light is repeatedly bounced between two highly reflective mirrors within a high-finesse optical cavity. 

When the light matches the absorption frequency of the gas molecules in the cavity, it gets absorbed, leading to a decrease in the intensity of the light bouncing between the mirrors. 

By precisely measuring the time it takes for the light intensity to decrease, CRDS can accurately determine the concentration of the gas being analysed, even at extremely low levels, making it a valuable tool in environmental monitoring, atmospheric studies, and gas analysis applications.

According to market research, the gas analyser market size is estimated at $940m in 2024, and is expected to reach $1.33 billion by 2029, growing at a CAGR of 7.08% during the forecast period (2024-2029).

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