Method of manufacturing a combustibles sensor

Details Method of manufacturing a combustibles sensor Method of manufacturing a combustibles sensor

1981-03-31

1982-10-19

Lusignan, Michael R.

Coating processes

Electrical product produced

Metallic compound coating

23232E, 338 34, 422 94, G01N 3112, B05D 512, H01L 700

Patent

active

043550568

ABSTRACT:
A method of manufacturing a differential thermocouple combustibles sensor is disclosed which makes the sensor relatively insensitive to sulfur poisoning. To accomplish this the catalytic thermocouple junction of a catalytic-non-catalytic junction pair is formed by coating it with a gel to increase the surface area and then with a chloroplatinic acid solution to make it catalytic. The catalytic junction is then treated with H.sub.2 S to achieve a high catalyst surface area.

REFERENCES:
patent: 3867207 (1975-02-01), Decker
patent: 4242303 (1980-12-01), Takahashi et al.
patent: 4297192 (1981-10-01), Shinohara et al.
Valvo Berichte, XVIII, Heft (1974), pp. 84-87.
Ullmann's Encylopedia of Technical Chemistry, 3rd Edition, vol. 18, (Munich-Berlin-Vienna 1967), p. 640.

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