Fire extinguishing condition monitoring apparatus for automatic

Details Fire extinguishing condition monitoring apparatus for automatic Fire extinguishing condition monitoring apparatus for automatic

1985-12-19

1987-11-17

Kashnikow, Andres

Fire extinguishers

Special applications

Condition responsive control

340578, A62C 3700

Patent

active

047067608

ABSTRACT:
Apparatus for monitoring the fire extinguishing condition of automatic fire extinguishing equipment which is adapted to detect flames and spray a fire extinguisher liquid from a nozzle to extinguish a fire. The apparatus comprises a detector for generating a signal corresponding to the light energy radiated by the flames and a fire determination circuit for determining that the fire extinguisher liquid is hitting the flames when the detector signal has a DC component but has no AC component, since the AC component corresponds to flicker of the flame and ceases when the fire is sprayed with the fire extinguisher liquid.

REFERENCES:
patent: 3588893 (1971-06-01), McCloskey
patent: 4471221 (1984-09-01), Middleton et al.
patent: 4533834 (1985-08-01), McCormack

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