| 摘要 |
PURPOSE: A pressure sensor is provided which invariably secures high measurement precision and reduces the change, deformation, and others of a measurement signal based on thermal expansion to the minimum level and has high reliability and durability, and relatively easily manufactures at a low cost. CONSTITUTION: A pressure sensor(1) is used for an extruding machine of a plastic material in particular, a chemical process, and others. The pressure sensor(1) is provided with a support element(3) for a semiconductor chip(5) having a strain gauge(9) on one of opposite faces, a casing(2) suitable to store the support element(3), a cover element(6) provided to close the casing(2), and a mechanical transfer element(8) stored in the cover element(6), faced to the semiconductor chip(5), and kept in contact with the semiconductor chip(5). The semiconductor chip(5) is stored to float in the support element(3).
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