Hydrogen detector

Details Hydrogen detector Hydrogen detector

1981-04-01

1982-04-13

Serwin, Ronald

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

324 71SN, 338 34, 422 95, G01N 3106, G01N 2740, G01N 2712

Patent

active

043247601

ABSTRACT:
A hydrogen detector comprised of a substrate supporting an electrically conducting base metal film, an electrically conducting top film of metal able to dissociate hydrogen into atomic form, a polycrystalline film of titanium dioxide sandwiched between the base and top films, the polycrystalline titanium dioxide film electrically insulating the base film from said top film, the base film being in electrical contact with the titanium dioxide film, an insulating layer electrically insulating said titanium dioxide film from said top film except for a predetermined surface portion thereof in electrical contact with said top film, said predetermined electrically contacting portion being at least sufficiently large to produce a measurable electrical conductance, said top and base films being connected to an external circuit to measure conductance, the electrical conductivity of said hydrogen detector varying with the concentration of hydrogen in the atmosphere surrounding it.

REFERENCES:
patent: 3479257 (1969-11-01), Shaver
patent: 3999947 (1976-12-01), Mohara et al.
patent: 4058368 (1977-11-01), Svensson et al.
Yamamoto et al., "Surface Science", vol. 92, (Feb. 11, 1980), pp. 400-406.

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