| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photoelectric separation type smoke sensor for maintaining normal sensitivity, even if inclination, or the like, is generated on an installed wall surface. Ž<P>SOLUTION: The sensor including a light transmission unit 2 having a light source radiating light into a monitor space; a light-receiving unit 1 for receiving the light irradiated from the light transmission unit 2; a fire determination unit 11a outputting a fire signal if light-receiving output from the light-receiving unit 1 is not smaller than a predetermined light-reduction rate; an inclination sensor 8 for detecting inclination state, in an installation state of the light transmission unit 2 or the light-receiving unit 1 to output an inclination signal; and an alarm control unit which is installed in the light-transmitting unit 2 or the light-receiving unit 1, and inhibits an alarm due to light axis adjustment abnormality, when the inclination signal is input. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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