G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 27/416 (2006.01) G01N 27/404 (2006.01) H01M 8/04 (2006.01)
Patent
CA 2373870
An apparatus for measuring hydrogen content and partial hydrogen pressure in gas streams and a method of modeling the sensor based on the characteristics of the sensor. The apparatus includes a housing 20 with micro-fuel cell sensor 10 disposed therein. The sensor includes a sensing element having first and second gas diffusing electrodes 4-1, 4-2 spaced from one another with an acidic electrolyte disposed between the electrodes. A first gas permeable membrane 14 separates the first electrode from an external gas stream. A second gas permeable membrane 12 separates the second electrode from atmospheric air. Electrochemical charging of the first electrode occurs when hydrogen from a gas stream diffuses through the first membrane to react with the first electrode, while the potential of the second electrode remains unchanged. The potential difference between the first and second electrodes measured as current is identified to represent the sensor output. The response time of the sensor is modeled based on the characteristics of the sensor affecting the sensor response time.
Babes-Dornea Elena
Beauchemin Claude
Qin Renyan
Craig Wilson And Company
General Electric Canada Inc.
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