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U.S. Department of Energy
Office of Scientific and Technical Information

IMPROVEMENTS IN OR RELATING TO ELECTRICAL CONDITION-DETECTING APPARATUS, SUCH AS FOR USE IN FLAME-DETECTION

Patent ·
OSTI ID:4790698
A flame and/or smoke detecting apparatus using a Geiger-Mueller sensing device ls designed which may operate in the standby condition for a long time and which prevents false indication of fire in the event of power interruption. The Geiger-Mueller devlce is of the non-selfquenchlng type, and a quenching circuit isprovided with time delay means to maintain the Geiger-Mueller device insensitlve untll the circuit is fully operative such as after a power fallure. Fire is indicated when the device responds to u-v light either emitted by the flame or reflected from an aunxlllary source by the smoke. (D.L.C.)
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-16-011923
OSTI ID:
4790698
Report Number(s):
GB 890854
Country of Publication:
United Kingdom
Language:
English