Early fire compound sensing system and apparatus

Details Early fire compound sensing system and apparatus Early fire compound sensing system and apparatus

1976-12-10

1978-05-16

Swann, III, Glen R.

Communications: electrical

Systems

Call station

340228R, 340237R, 340237S, G08B 1700

Patent

active

040901777

ABSTRACT:
An early fire product sensing system and apparatus has at least one earlier fire stage sensor and at least one later fire stage sensor. At least two of such sensors are coupled so that the earlier stage sensor output raises the sensitivity of the later stage sensor. The system is characterized by reducing the fire sensing period without reducing the sensing accuracy.

REFERENCES:
patent: 4027302 (1977-05-01), Healey et al.

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