Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1989-11-21
1991-10-08
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 88, 422110, G01N 2716, G05D 706
Patent
active
050552708
ABSTRACT:
A gas sensing device has a sampling chamber for containing a gas to be sensed, with a gas sensing element with the chamber for providing an output signal which varies in response to the presence of the gas in the chamber. An orifice, or other restriction, permits gas flow between the interior and the exterior of the chamber and a pump, e.g. in the form of a heater, displaces a sample of the gas through the restriction into the interior of the chamber for sensing by the sensing element and subsequently displaces gas from the interior to the exterior of the chamber.
REFERENCES:
patent: 3039053 (1962-06-01), Jacobson
patent: 3858434 (1975-06-01), Hoppesch et al.
Colbow Konrad
Consadori Franco
Slamka Richard
Halitec Industries Corp.
Hampel Howard
Warden Robert J.
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