Co2 sensor

Details Co2 sensor Co2 sensor

G - Physics

01

N

G01N 27/404 (2006.01) A61B 5/1473 (2006.01) G01N 33/483 (2006.01) G01N 33/49 (2006.01)

Patent

CA 2337894

A carbon dioxide sensor comprises a closed chamber having as a wall a substantially water -tight, carbon dioxide-permeable membrane (3) and containing two electrodes (5, 6). The chamber contains a film (9) of de-ionised water contacting the membrane (3) and both of the electrodes. The change in conductance of the water due to absorption of carbon dioxide is measured.

L'invention concerne un capteur de dioxyde de carbone comprenant une chambre fermée dont la paroi est formée d'une membrane (3) perméable au dioxyde de carbone et sensiblement étanche à l'eau, la chambre contenant deux électrodes (5, 6). La chambre contient une pellicule (9) d'eau déionisée en contact avec la membrane (3) et les deux électrodes. On mesure le changement de conductance de l'eau dû à l'absorption de dioxyde de carbone.

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