| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure measuring sensor which is capable of measuring the pressure load averagely exerted across an effective span of a continuous beam structure and intended to improve the durability and the life in a corrosive environment. SOLUTION: A pressure measuring sensor for measuring the pressure applied to a continuous beam structure 10 by measuring the bending stress across an effective span 15 of the continuous beam structure incorporates two strain gages 30, 31 pasted to two depth positions of the beam 10 in a central section of the span 15 and two dummy gages not pasted to the beam 10, the strain gages 30, 31 are neighbored with each other to be active and the two dummy gages are incorporated in the opposite sides thereof to form a Wheatstone bridge circuit having a detection output from which the pressure is measured.
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