| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas sensor capable of certainly performing the inspection due to an inspection gas, and a gas detector. SOLUTION: The gas sensor A is equipped with a cylindrical housing container 23 having a gas inflow port 8 on one end side in its axial direction and housing a gas-sensitive body 1 comprising a metal oxide semiconductor therein, a filter cap 7 having the housing container 23 fitted therein so that the gas inflow port 8 becomes the head from the opening part on one end side in the axial direction of the housing container 23 and having a vent hole 10 formed to the end surface on the other end side of the housing container 23 and the adsorbing material 12 provided to the gas flow channel between the vent hole 10 and the gas inflow port 8 to adsorb an obstruction gas and a poisoning gas. An inspection gas introducing passage 22 for introducing the inspection gas into the gas inflow port 8 from the opening part of the filter cap 7 through the gap between the outer peripheral surface of the housing container 23 and the inner peripheral surface of the filter cap 7 is provided and a notch 19 is formed to the peripheral surface on the side of the opening part of the filter cap 7 and a guide wall 20 for guiding the inspection gas to the notch 19 from the peripheral surface around the notch 19 toward the outside in the diametric direction of the notch 19 is provided in a protruded state. COPYRIGHT: (C)2006,JPO&NCIPI
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