Extended range chemical sensing apparatus

Details Extended range chemical sensing apparatus Extended range chemical sensing apparatus

1993-01-04

1994-01-18

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

422105, 73 232, 73 2503, 73 3106, 436144, 436149, 436151, G01N 2700

Patent

active

052797953

ABSTRACT:
An apparatus for sensing chemicals over extended range of concentrations. In particular, first and second sensors each having separate, but overlapping ranges for sensing concentrations of hydrogen are provided. Preferably, the first sensor is a MOS solid state device wherein the metal electrode or gate is a nickel alloy. The second sensor is a chemiresistor comprising a nickel alloy.

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"Thin Films of Pd/Ni Alloys for Detection of High Hydrogen Concentrations", J. Appl. Physics 71(1), Jan. 1, 1992, pp. 542-544.

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