Importance

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Abstract

A pressure sensor device prevents foreign matters from reaching a pressure sensor at the back of a pressure introducing passage, is superior in resistance against both fouling and freezing, and includes a temperature sensor. The pressure sensor device comprises a pressure sensor including a pressure detecting element is disposed to define an enclosed reference chamber and an enclosed pressure introducing chamber and is deformed depending on a pressure difference between the reference chamber and the pressure introducing chamber for detecting the pressure of an object to be measured, a pipe connected to the pressure introducing chamber, and a lead-out portion; a temperature sensor including a heat sensitive element for detecting the temperature of the measured object and a lead-out portion; and a sensor container containing the pressure sensor and the temperature sensor therein and including a pressure introducing passage formed therein which has one end air-tightly connected to the pipe and the other end being open to the exterior, and also has a labyrinth structure, the sensor container including a temperature sensor containing projection formed to accommodate the heat sensitive element embedded in its distal end portion.

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First Claim