公开(公告)号：EP0252627A3

公开(公告)日：1988-09-28

申请号：EP87305353

申请日：1987-06-17

申请人： English Electric Valve Company Limited

发明人： Jones, Eric ,  Doncaster, Alan Mason

IPC分类号： G01N27/12

CPC分类号： G01N27/12 ,  G01N33/0044

摘要： Hydrogen Sulphide is a toxic gas present in many environments. It is necessary for a detector to be highly sensitive and not to respond to other common gases. The sensor is made up of electrodes (5) coated with a thin layer (6) of material comprising the oxides of molybdenum and tungsten and in the presence of hydrogen sulphide gas, changes its resistance. The layer is formed in such a way that a bronze-like ordered lattice is formed, containing molybdenum, tungsten and oxygen ions.