| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas sensor unit constituted so as to reduce the risk of the permeation of water, which penetrates through an introducing space from outside, through a filter while improving the response of a gas sensor and reducing the damage of the filter caused by the foreign matter or the like penetrating through the introducing space from the outside. SOLUTION: The gas sensor unit 100 has introducing spaces S1-S4 and the gas flow channel positioned between the introducing spaces S1-S4 and the filter 140 and composed of a filter front space T to which the filter 140 faces and a filter rear space U. All of the introducing spaces S1-S4 are arranged at a position capable of visually confirming at least part of either one of the introducing spaces S1-S4 through the introducing spaces S1-S4 and the filter front space T from outside of a casing 101. The filter 140 is arranged at the position incapable of being visually confirmed from outside of the casing 101 even through either one of the introducing spaces S1-S4. COPYRIGHT: (C)2006,JPO&NCIPI
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