Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1986-04-25
1987-07-21
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250343, G01N 2137
Patent
active
046820310
ABSTRACT:
A infrared gas analyzer having measuring and reference chambers and receiving chambers respectively disposed on radiation exit sides of the measuring and reference chambers and being filled with a particular gas; a pressure communicating duct system including a particular chamber interconnects the two receiving chambers is partitioned by a foil of polyvinylidenfluoride being piezo electrically effective to generate an electrical signal on account of a pressure differential between the two receiving chambers, as indication of the concentration of the measuring gas, i.e., host gas that flows through the measuring chamber.
REFERENCES:
patent: 4500207 (1985-02-01), Maiden
patent: 4605313 (1986-08-01), Kebabran
Fabinski Walter
Schaefer Werner
Fields Carolyn E.
Hartmann & Braun AG
Siegemund Ralf H.
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