| 摘要 |
A pressure sensor (1) is arranged on a supply/discharge pipe (2) of a reactive gas to be supplied to or discharged from a fuel cell, and measures the pressure of the reactive gas in the pipe (2). The pressure sensor is provided with an engaging section (5) which has a screw and engages with a pipe wall (3) of the pipe (2); a pressure detecting section (6), which faces a reactive gas channel (4) of the pipe (2) and detects the pressure inside the pipe (2) by displacement; a displacement sensor (7), which is arranged in the pressure detecting sensor (6) and measures displacement of the pressure detecting section (6); and a buffer section (8), which connects the engaging section (5) with the pressure detecting section (6) by sandwiching a buffer layer (14) which communicates with the reactive gas channel (4) of the pipe (2), and eliminates abnormal displacement of the pressure detecting section (6) by deforming to a stress generated by torque of the screw, at the time when the pressure sensor (1) is engaged with the pipe (2). |
