Photoacoustic method: The contemporary premier method for dissolved gas analysis
This article photoacoustic spectroscopy applications since 2003 when the first online and portable PAS devices appeared for dissolved gas-in-oil measurements.
byMarius Grisaru
This article describes the tip of the iceberg of experience, research, debates, and understandings of photoacoustic spectroscopy applications since 2003 when the first online and portable PAS devices appeared for dissolved gas-in-oil measurements.
After the introduction of the pros and cons of the general spectroscopic method for dissolved gas measurements in insulating liquids, the author dives into the method used in the majority of multi gas dissolved gas analyses in 2024 – the photoacoustic method (PAS). He describes the advantages and issues that users should be aware of when applying PAS for dissolved gas analysis (DGA). Along with PAS properties, the article includes a short comparison with other DGA measurement approaches.
The study briefly describes the main drives that bring PAS technology to the edge of measurements in different domains along with DGA applications. It will also review the new approaches for obtaining the main advantages of PAS application in dissolved gas analysis.
#DGA#history applications#photoacoustic gas measurements#theory
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