This invention is in the field of gas detection for sulphur hexafluoride (SF6)gasdecomposition products, particularly for the detection of thionyl fluoride(SOF2) andsulphur dioxide (SO2). The invention relates to a novel portable handheldinstrumentthat can readily detect SOF2, SF4 and SO2 in SF6 gas filled electricalequipment andin air. An apparatus for detecting SF6 decomposition products comprising: (a)aninlet for receiving SF6 gas containing SOF2 or SF4; (b) A chamber connected totheinlet and containing a catalyst which converts SOF2 or SF4 into SO2; and (c)an SO2detector connected downstream of the chamber.
展开▼