Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1988-09-09
1992-07-14
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250339, 250345, 128719, 356437, G01N 2161
Patent
active
051305445
ABSTRACT:
Optical gas analyzers are disclosed for analyzing gas samples, including a source of radiation, a gas sample cell through which the radiation passes, a mirror for dividing that radiation into a number of secondary radiation paths for each of the gases in the gas sample which is to be analyzed, with the mirror being arranged so that after a single reflection from the mirror each of the secondary radiation paths is directed to an optical filter which passes a preselected wavelength characteristic of the particular gas in question, and then to a detector for measuring that wavelength characteristic. These optical gas analyzers are preferably used in connection with gas samples which include anesthetic gases, along with CO.sub.2 and N.sub.2 O.
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Fields Carolyn E.
Gambro Engstrom AB
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