Hydrogen sensor with air access

G - Physics – 01 – N

Patent

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Details

G01N 27/12 (2006.01) G01N 33/00 (2006.01)

Patent

CA 2738869

The invention is directed at a method of sensing hydrogen gas in a liquid com-prising: providing a measuring device comprising a hydrogen sensing chamber and a palladium hy-drogen sensor mounted in contact with said cham-ber, positioning a hydrogen permeable membrane between the liquid and the hydrogen sensor and creating a headspace, selectively providing air to the sensor headspace, thereby bringing air into contact with said palladium sensor to refresh the palladium, after the palladium sensor is refreshed shutting off air flow to the sensor headspace, bringing liquid into said chamber, allowing hydro-gen to pass through the membrane and reach equi-librium, and reading the hydrogen concentration.

La présente invention concerne un procédé permettant de détecter de l'hydrogène dans un liquide comprenant les étapes consistant à : fournir un dispositif de mesure comprenant une chambre de détection d'hydrogène et un capteur d'hydrogène au palladium fixé en contact avec ladite chambre, positionner une membrane perméable à l'hydrogène entre le liquide et le capteur d'hydrogène et créer un vide, fournir de manière sélective de l'air au vide du capteur, mettant ainsi l'air en contact avec ledit capteur au palladium pour rafraîchir le palladium, une fois le capteur au palladium rafraîchi, couper l'écoulement d'air vers le vide du capteur, amener du liquide dans ladite chambre, permettre à l'hydrogène de passer à travers la membrane et d'atteindre l'équilibre, et lire la concentration d'hydrogène.

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