Method for testing smoke sensor and a smoke sensor having a func

Details Method for testing smoke sensor and a smoke sensor having a func Method for testing smoke sensor and a smoke sensor having a func

1991-03-14

1993-09-21

Peng, John K.

Communications: electrical

Condition responsive indicating system

Specific condition

340628, 340629, G08B 1710

Patent

active

052472833

ABSTRACT:
A method for testing smoke sensor is to set a predetermined level for alarm generation on the basis of information on a first output of a main light receiving element for a stray light caused by an emitted light from a main light emitting element, a second output of an auxiliary light receiving element for the emitted light directly received from the main light emitting element and a composite output of the first and second output whereby tests for confirming normal operation and the like of the smoke detector can be executed with high precision.

REFERENCES:
patent: 4851819 (1989-07-01), Kawai et al.
patent: 4857895 (1989-08-01), Kaprelian
patent: 4897634 (1990-01-01), Sawa et al.
patent: 4901056 (1990-02-01), Bellavia et al.

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