| 摘要 |
PROBLEM TO BE SOLVED: To provide a sensor that suppresses damage on a circuit board forming a part of a measurement chamber when the circuit board is fixed to a casing member for storing the circuit board therein.SOLUTION: A sensor 100 comprises: a sensor element 60; a circuit board 30 carrying the sensor element on its own element attachment surface; a casing member 10 storing therein the circuit board, and having a measurement chamber 15 communicating with a detected atmosphere via a gas introduction port 12h formed thereon, with the sensor element facing the gas introduction port; and an annular elastic seal body 40 interposed between the element attachment surface and the casing member while being in contact with the element attachment surface. The elastic seal body is formed of foam rubber, includes an end face 40a facing the casing member and an end face 40b facing the element attachment surface, and includes a flat part formed on at least a part of each of the end faces. The elastic seal body is interposed between the element attachment surface and the casing member while being compressed between the flat parts. |
