| 摘要 |
PROBLEM TO BE SOLVED: To mount a sensor from plural mounting directions. SOLUTION: A sensor body 11 is mountable and demountable to a mounting tool 30 fixed to a mounted face, and is provided with an arm part 20 having a mounting groove 21. The mounting tool 30 is provided with an engagement projection 35, and further a locking projection 36, and a locking groove 23 to be locked with the locking projection 36 is formed on the arm part 20. The engagement projection 35 has a height dimension a and a longitudinal dimension b smaller than an opening width w of the mounting groove 21, and the sensor body 11 is rotatable on the engagement projection 35 as a shaft in a state of being engaged with the mounting groove 21, whereby the sensor body 11 can be mounted and demounted from plural directions of the mounting tool 30, and can be held in a predetermined mounting posture.
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