Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1996-12-19
1999-04-27
Alexander, Lyle A.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 94, 422 98, 73 2501, G01N 2704
Patent
active
058978364
ABSTRACT:
A thermal gas sensing apparatus for a gas detector is provided with a gas compartment containing a gas, a gas sensor exposed to the gas in the gas compartment, and a temperature sensor exposed to the gas in the gas compartment. The gas sensing apparatus includes a circuit for generating a gas signal having a magnitude which relates to the heat capacity of the gas and a circuit for generating a temperature signal having a magnitude which relates to the temperature of the gas. The apparatus includes a circuit for supplying a variable magnitude of electrical current through the gas sensor to cause the resistance of the gas sensor to remain substantially constant. The apparatus also includes a difference amplifier for generating a gas concentration signal based upon the temperature signal and the gas signal.
REFERENCES:
patent: 2817229 (1957-12-01), Beard
patent: 4057755 (1977-11-01), Piesche
patent: 4277439 (1981-07-01), Yasuda et al.
patent: 4541988 (1985-09-01), Tozier et al.
patent: 4594879 (1986-06-01), Maeda et al.
patent: 5217692 (1993-06-01), Rump et al.
patent: 5379630 (1995-01-01), Lacey
patent: 5418131 (1995-05-01), Butts
patent: 5526280 (1996-06-01), Consadori et al.
patent: 5535614 (1996-07-01), Okamoto et al.
Krcma Jan
Martell Dennis
Alexander Lyle A.
J and N Associates, Inc.
Nicor Technologies Inc.
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