| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure sensor capable of accurately measuring the pressure of a corrosive fluid, even upon the ingress of dust into a corrosive fluid or even upon installation on a vibrating device. SOLUTION: This pressure sensor is made of a body 1 cylindrically formed to have both openings 12a and 12b, and a cylinder internal part 13, a sensor element 2 having an axial hole 21a communicated to the cylinder internal part 13 and laid at one opening 12a of the body 1 so as to enable a pressure sensor tip 22 to detect pressure and conceal the axial hole 21a, oil 3 filling the axial hole 21a of the sensor element 2 and the cylinder internal part 13, and a transmission gel 4 provided in the cylinder internal part 13 for transmitting pressure to the oil 3. In this case, a high hardness part 5 having larger hardness than the transmission gel 4 and applying the pressure thereto is provided in the cylinder internal part 13 on the side of the other opening 12b of the body 1.
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