Combustible gases detector

Details Combustible gases detector Combustible gases detector

G - Physics

01

N

73/63

G01N 25/32 (2006.01)

Patent

CA 1086094

COMBUSTIBLE GASES DETECTOR ABSTRACT A differential thermocouple combustible gases detector is provided by coating one thermocouple junction of a differential thermocouple pair with a catalyst and the other thermocouple junction with a non-catalyst. Heated combustible gases re- act with the catalyst to liberate heat to the catalyst coated thermocouple junction in proportion to the concentration of com- bustible gases and proportionally raise the temperature of that junction above the non-catalyst coated junction. The output signal from the differential thermocouple device is thus a sig- nal indicative of the concentration of combustible gases.

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