Sulphur hexafluoride (SF6) is a man-made gas comprising of one sulphur and six fluoride atoms. SF6 is extremely chemically stable, non-flammable and highly electronegative, with an excellent dielectric property of approximately 2.5 times more than air. Therefore it is commonly used within electrical switchgear, transformers and substations as an electrical insulation, arc quenching and cooling medium.
Cambridge Sensotec has developed the new Rapidox SF6 6100 gas analyser featuring a pump back gas return function.
The analyser is able to extract the SF6 gas from equipment such as Gas Insulated Substations (GIS) and simultaneously analyse all measured gases. It will then pump it back at the same pressure as used within the electrical equipment by using a powerful 10 bar compressor. A vacuum purge cycle and gas storage system ensures that no air is allowed to contaminate the gas sample and that no SF6 gas is allowed to escape during the testing period.
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