Title: Reliability of Commercially Available Hydrogen Sensors for Detection of Hydrogen at Critical Concentrations - Part II Sensor Performance Test Results
Authors: BRETT LoisBOUSEK JaroslavMORETTO Pietro
Citation: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY vol. 34 no. 1 p. 562-571
Publication Year: 2009
JRC N°: JRC47290
ISSN: 0360-3199
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC47290
DOI: 10.1016/j.ijhydene.2008.10.033
Type: Articles in periodicals and books
Abstract: Reliable hydrogen sensors are essential to detect accidental hydrogen releases when hydrogen will be used to fuel future vehicles. To assess the performance of hydrogen safety sensors under conditions typical of automotive applications a test protocol has been defined. It has been experimentally evaluated by performing tests on commercially available hydrogen sensors. Catalytic sensors measured hydrogen concentration accurately and sensor response was largely independent of ambient parameters. However they were significantly cross sensitive to carbon monoxide and sensitivity to hydrogen was low. MOS sensors were sensitive to hydrogen and showed a low cross sensitivity to CO however almost all MOS samples showed poor accuracy and a strong dependence on ambient parameters. Electrochemical sensors were also sensitive however ambient parameters, cross sensitivity and accuracy tests showed a high variation in results. Tests on a limited number of thermal conductivity sensors highlighted their low sensitivity and strong dependence on temperature.
JRC Directorate:Energy, Transport and Climate

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