Hydrogen sensor

Details Hydrogen sensor Hydrogen sensor

2007-03-13

2007-03-13

Sines, Brian (Department: 1743)

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

C422S083000, C422S090000, C438S048000, C438S049000, C436S043000, C436S144000, C436S149000, C073S001010, C073S001020, C073S023200

Reexamination Certificate

active

10119901

ABSTRACT:
A hydrogen sensor includes a first electrode3and a second electrode4provided in contact with a proton conduction layer2; a gas diffusion controlling portion6provided between a measurement gas atmosphere and the first electrode3; and a support element (1a,1b) for supporting the proton conduction layer6, the first electrode3, the second electrode4, and the gas diffusion controlling portion6. Hydrogen contained in a measurement gas introduced via the gas diffusion controlling portion6is dissociated, decomposed, or reacted by applying a voltage between the first electrode3and the second electrode4to thereby generate protons. Hydrogen concentration is obtained on the basis of a limiting current generated as a result of the generated protons being pumped out via the proton conduction layer2from the first electrode3side of the proton conduction layer to the second electrode4side of the proton conduction layer. Hydrogen concentration on the first electrode2is controlled to a partial pressure of not less than 10−12atm, or more preferably, of not less than 3×10−12atm and of less than 10−2atm.

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