2025-12-02
OPSIS Podcast #03 - How Does a Gas Analyser Work?
We’re excited to announce the release of our latest podcast episode #03, where we dive into the science behind modern gas analysers. The episode explains how gases can be identified by their optical properties using a light source, a detector, and the unique spectral fingerprints of different molecules.
We explore DOAS (Differential Optical Absorption Spectroscopy), a technique that uses a xenon lamp and spectrometer to monitor multiple gases simultaneously with high precision. The discussion also covers conventional analysers, including chemiluminescence-based NOx instruments and fluorescence-based SO2 detection.
Finally, we compare how these technologies are applied across ambient air monitoring, emissions control, and process gas analysis, highlighting how they adapt to different concentration ranges. Tune in to learn how these methods help us better understand and manage the air around us.