| abstract |
This invention is in the field of gas detection for sulphur hexafluoride (SF 6 ) gas decomposition products, particularly for the detection of thionyl fluoride (SOF 2 ) and sulphur dioxide (SO 2 ). The invention relates to a novel portable handheld instrument that can readily detect SOF 2 , SF 4 and SO 2 in SF 6 gas filled electrical equipment and in air. An apparatus for detecting SF 6 decomposition products comprising: (a) an inlet for receiving SF 6 gas containing SOF 2 or SF 4 ; (b) A chamber connected to the inlet and containing a catalyst which converts SOF 2 or SF 4 into SO 2 ; and (c) an SO 2 detector connected downstream of the chamber. |