| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure detector detecting the pressure of fluid to be introduced into a rotor even in the rotation of the rotor. SOLUTION: When a magnetic element 2 provided in the rotor is moved according to the pressure change in the fluid to be measured, the inductance of a first coil 3 is changed, and a resonance frequency of a resonance circuit in a second coil 4 provided in a stator is thus changed so that the frequency change can be found as the pressure change of the fluid.
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