CAI PAS Sense analyzers use photoacoustic infrared technology to measure many of the most commonly measured IR-absorbing gases. Gas selectivity is achieved through the use of optical filters that provide both a means of detecting the gas of interest and compensating for interfering gases and water. Both bench-top and rack-mounted PAS configurations are available.

An optional carousel is available to accommodate up to five additional gases. Typical applications for CAI PAS analyzers include:

• Vehicle exhaust measurements for Ammonia, Ethanol, Nitrous Oxide, CO₂, CO and H₂O
• SHED testing for Methanol, Ethanol, Toluene, CO₂, R-134-A and H2O
• Process quality control
• Stack gases
• VOC/THC analysis
• Fermentation/greenhouse gases
• Trace gas analysis
• Occupational health and safety
• Livestock emissions