| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure detector designed and manufactured easily. SOLUTION: This pressure detector provided with a semiconductor type pressure sensor 10 formed on one face of a diaphragm and constructed of a Wheatstone bridge circuit consisting of a plurality of gauges is constructed of a constant current circuit 20 supplying electric current to the semiconductor type pressure sensor 10 and an amplification circuit amplifying an output from the semiconductor type pressure sensor 10. The pressure detector is provided with offset voltage regulating resistors R23 and R24 connected between the semiconductor type pressure sensor 10 and the constant current circuit 20, a pair of jumper terminals J1 electrically breaking connection between the offset voltage regulating resistors R23 and R24 and the constant current circuit 20, and a pair of measuring terminals T3 and T6 arranged on both sides of the jumper terminals J1 for adjusting the semiconductor type pressure sensor 10 in a manufacturing process.
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