| 摘要 |
<P>PROBLEM TO BE SOLVED: To secure sufficient sensitivity without causing problems of pressure resistance and detection accuracy accompanying this. Ž<P>SOLUTION: This differential pressure sensor comprises a pressure vessel 1 having a first pressure chamber 10A and second pressure chamber 10B, a permanent magnet 52 arranged in the second pressure chamber 10B in a moving manner when pressure difference occurs in the first pressure chamber 10A and second pressure chamber 10B, and a Hall element 60 for detecting the movement of the permanent magnet 52 outside the pressure vessel 1. The Hall element 60 is directly arranged on the outer surface of a wall constituting the second pressure chamber 10B. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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