| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple and inexpensive fluid measuring sensor. SOLUTION: The fluid measuring sensor 10 comprises: a piezoelectric element section 2; and a protrusion member 1 provided on one surface of the piezoelectric element section 2. The piezoelectric element section 2 has: a piezoelectric member 3; a first electrode pair comprising a pair of first electrodes formed at a position at which the first electrodes face each other through the piezoelectric member 3; and a second electrode pair comprising a pair of second electrodes formed at a position at which the second electrodes face each other through the piezoelectric member 3, and formed so as to be separated from the first electrode pair by a predetermined distance in the first direction. The width of a surface in the first direction of the protrusion member 1 on the side of piezoelectric element section 2 in the first direction is larger than the predetermined distance. A center of the surface of the protrusion member 1 on the side of piezoelectric element section 2 is coaxially positioned in the center between the first and second electrode pairs. COPYRIGHT: (C)2011,JPO&INPIT
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