| 摘要 |
PROBLEM TO BE SOLVED: To provide a sensor for monitoring a part capable of moving translationally to the sensor with respect to positions on a moving shaft. SOLUTION: A piston 45 in a cylinder 43 mounts the sensor 11. The sensor 11 can be moved by a magnet 49 that is arranged at a part that can be moved and is oriented in regard to the north pole and the south pole. The sensor has three reed contacts 15, 16, 17 that are oriented in parallel, and first and second reed contacts 15, 16 are arranged in one plane while the longitudinal axes are made in parallel and can be operated simultaneously by a magnetic field 51 of the magnet 49 arranged at the movable position 45. The third reed contact 17 is arranged with a distance to the plane of the first and second reed contacts 15, 16. COPYRIGHT: (C)2008,JPO&INPIT
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