| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydrogen gas sensor capable of suppressing the sensitivity reduction, even in use under silicone-existing environment without requiring aging treatment. SOLUTION: In this hydrogen gas detector constituted by storing a contact combustion type gas sensor 10, in a vessel having a through hole 21, the amount of ventilation of the through hole 21, is set so that the temperature of the contact combustion type gas sensor 10 is limited to be 340°C or lower. COPYRIGHT: (C)2007,JPO&INPIT
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