Gas sensing member and gas detection apparatus suitable...

G - Physics – 01 – N

Patent

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Details

IPC codes

G01N 31/22 (2006.01) G01N 21/78 (2006.01)

Type

Patent

Patent number

CA 2541774

Description

A gas sensing member that can minimize corrosion and sensitivity deterioration attributed to sublimation of reactive reagents. There is provided a gas sensing member comprising frame (1) having one of its opposite faces fitted with non-gas-permeable optical concentration detection window (4) capable of optical concentration detection and having the other of its opposite faces fitted with gas permeable layer (6) capable of gas inflow and, housed in the frame (1), reactive reagent impregnation material (7) capable of being impregnated with a reactive reagent which is colored by reaction with subject gas.

L'invention porte sur un élément de détection de gaz permettant de réduire la corrosion et la baisse de sensibilité attribuées à la sublimation de réactifs, et comportant un cadre (1) présentant sur l'une de ses faces opposées une fenêtre non perméable au gaz de détection optique de la concentration, et sur l'autre face une couche (6) perméable au gaz entrant, et, placé dans la chambre, un matériau (7) pouvant s'imprégner d'un réactif se colorant par réaction avec le gaz à détecter.

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