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Field-proven Photoacoustic Spectroscopy (PAS) Technology Made in the USA by CAI ENVEA Group

10. 22. 2025
CAI ENVEA Group is now manufacturing, supplying and servicing the PAS Sense series of analyzers in California, USA, which were previously manufactured by LumaSense as INNOVA.
The new PAS Sense analyzers are highly accurate, reliable, and stable quantitative gas monitoring systems designed to help protect both the environment and plant personnel.

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. The measurement system, based on the photoacoustic infrared detection method, is capable of measuring almost any gas that absorbs infrared light.

The PAS SENSE is the ideal solution for many applications, including:

  • Electrical utilities where environmental compliance and leak prevention are critical. PAS SENSE delivers proven performance for SF6 and advanced alternatives like C4F7N. Learn more.
  • Chemical manufacturing and processing, delivering simultaneous detection of up to five target gases, they help process and chemical industries become compliant and safe in multi-hazardous environments. Learn more.
  • Medical sterilization, offering exceptional parts-per-trillion (PPT) detection for ethylene oxide which is critical for patient safety and regulation compliance, as well as enhancing the efficiency and reliability of sterilization processes. Learn more.
  • Oil and gas industry, where reliable parts-per-trillion (PPT) is critical. Engineered for harsh environments, the PAS Sense series utilizes over 30 years of field-proven stability and sensitivity to upstream, midstream, and downstream operations. Learn more.
  • Research laboratories – PAS Sense series’ ability to detect unique IR-absorbing compounds means it’s the choice for lab personnel who demand accuracy, protection and stability in their research environment. Learn more.


The analyzers require a maximum of only two simple calibrations per year. Accuracy is high as the systems compensate for temperature and pressure fluctuations, water vapor interference, and interference from other known gases.

As the analyzer operates immediately when switched on, there is no warm-up time which reduces delays. Both bench-top and rack-mounted PAS configurations are available for use in different locations.

Salim Hiouel, Global Product Line Manager for CAI ENVEA Group said: “Field-proven for over 30 years, the PAS Sense series is the gold standard in photoacoustic spectroscopy in the USA. Customers can expect to receive the same high-quality products and service, manufactured and delivered by the leaders in environmental monitoring. It’s still the same trusted technology, with the same exceptional performance. We are proud to support the legacy of LumaSense while injecting fresh energy into the range, backed by an experienced USA-based team”.

In addition to the product manufacture and supply, CAI ENVEA Group also carries out maintenance, service and support, including the supply of spare parts, from a single facility in California.

For more information on Photoacoustic Infrared Spectroscopy Analyzers please go to: https://www.cai.envea.global/cai/gas_analyzers/photoacoustic-infrared-spectroscopy-pas-analyzers/ 

ARTICLES CONNEXES

ENVEA acquiert Droplet Measurement Technologies

ENVEA, leader mondial en solutions de gestion environnementale, annonce aujourd’hui l’acquisition de Droplet Measurement Technologies (Droplet). Les conditions financières de la transaction n’ont pas été communiquées.