The photoacoustic gas analyzer SF6 LaserGasTest (short: LGT) is a portable gas detection system "Made in Germany“ for fast and precise leak detection of the insulating gas SF6 (Sulfur Hexafluoride).
By combining laser source and photoacoustic spectroscopy (PAS), a significantly higher SF6 selectivity to comparable detectors can be achieved. To be more specific, LGT can detect the presence of about 10 ppb of SF6, which is equivalent to the detection of one SF6 molecule in one hundred million of air.
In addition to SF6, the system also detects compounds with a high absorption at a wavelength of 10.6 μm. However, the absorption coefficient of SF6 is 2 to 3 times higher compared to other air admixtures.
Its portable design and integrated power supply allow efficient diagnosis of gas-insulated switchgear (GIS) and accurate location of gas leaks as well as leak size determination in daily use.
Also the high speed gas flow rate along with the low response time of the photoacoustic detector reduces the recovery time of the system to less than 2 seconds.
SF6 LaserGasTest was developed in cooperation with Special Technologies, Ltd. (click here to learn more).
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