Combustible gases detector

Details Combustible gases detector Combustible gases detector

1976-09-20

1977-12-20

Wolk, Morris O.

Chemistry: physical processes

Physical processes

Crystallization

23232E, 23255E, 73 15B, 73 25, 136225, G01N 2520, G01N 2530, G01N 3110, H01L 3500

Patent

active

040638987

ABSTRACT:
A differential thermocouple combustible gas 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 react with the catalyst to liberate heat to the catalyst coated thermocouple junction in proportion to the concentration of combustible 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 signal indicative of the concentration of combustible gases.

REFERENCES:
patent: 3076697 (1963-02-01), Miller et al.
patent: 3801973 (1974-04-01), Grabiel et al.
patent: 3844920 (1974-10-01), Burgett et al.
patent: 3847778 (1974-11-01), Riddel
patent: 3906721 (1975-09-01), Micheli et al.
patent: 4029472 (1977-06-01), Micheli et al.

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