Catalytic combustion sensor

Details Catalytic combustion sensor Catalytic combustion sensor

G - Physics

01

N

26/201, 73/69

G01N 27/12 (2006.01) G01N 27/16 (2006.01)

Patent

CA 1239807

ABSTRACT CATALYTIC COMBUSTION SENSOR A sensor (1) of the catalytic combustion of gases preferably methane (CH4) having a resistance heating element (2) preferably of platinum or gold, and having catalyst material heated by the resistance heating element (2) containing a platinum group compound, and having an anti-diffusion layer to protect the catalyst from harmful substances such as sulphur dioxide. The resistance heating element (2) is applied as a thin- or thick-film resistor, preferably meandering, on a flat substrate (3), the catalyst material then being applied as a two-dimensional coating on the resistance heating element (2) and optionally also on the substrate (3). The substrate is a massive plate of predetermined thickness (D) and material is removed from the opposite side of the substrate (3) to the resistance heating element (2), to reduce the substrate thickness to the minimum (D') necessary for strength, material being removed in only those areas (4) opposite to where the resistance heating element (2) is actually located. PAT 9007-1

480853

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