New level in quantitative optical gas imaging technology enables unprecedented gas leak detection precision
Jan 24 2023
Quantitative optical gas imaging (qOGI) is a technology that allows for the detection and measurement of gas leaks that are invisible to the naked eye. By utilising cooled hydrocarbon optical gas imaging (OGI) cameras and an algorithmic solution, qOGI is able to quantify gas leaks in units of mass and volumetric leak rates, as well as concentration over pathlength (ppm-m).
Historically, OGI cameras were only able to provide qualitative analysis, indicating that a leak was present but giving little indication of the size of the leak. With qOGI, this limitation is overcome, enabling users to visualise and quantify leaks with greater precision.
The FLIR QL320 is a qOGI system that has demonstrated the ability to quantify leaks as small as 100 scc/min for propane and 300 scc/min for methane with a ΔT of 5°C and moderate wind speed. However, the minimum size of a leak that can be quantified is dependent on several factors such as the ΔT, the compound being imaged, and wind speed.
In conclusion, quantitative optical gas imaging is an advanced technology that allows for the precise detection and measurement of gas leaks that are invisible to the naked eye. The FLIR QL320 is a powerful qOGI system that can detect and quantify leaks as small as 100 scc/min for propane and 300 scc/min for methane under certain conditions.
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