Method and device for the detection of SF6 decomposition products

摘要

This invention is in the field of gas detection for sulphur hexafluoride (SF₆) gas decomposition products, particularly for the detection of thionyl fluoride (SOF₂) and sulphur dioxide (SO₂). The invention relates to a novel portable handheld instrument that can readily detect SOF₂, SF₄ and SO₂ in SF₆ gas filled electrical equipment and in air. An apparatus for detecting SF₆ decomposition products comprising: (a) an inlet for receiving SF₆ gas containing SOF₂ or SF₄; (b) A chamber connected to the inlet and containing a catalyst which converts SOF₂ or SF₄ into SO₂; and (c) an SO₂ detector connected downstream of the chamber.