Discriminating flame detector

Details Discriminating flame detector Discriminating flame detector

1976-01-02

1977-09-27

Borchelt, Archie R.

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

G01J 142

Patent

active

040513750

ABSTRACT:
A device for discriminating between the presence of flame in a selected position and the presence of flame in nearby locations within a combustion area is disclosed. A means for detecting electromagnetic radiation having wavelengths known to be characteristic of the base of the flame but not of the rest of the flame is aimed at the position at which the base of the flame to be monitored will occur if the flame is present. The intensity of the radiation having the given wavelengths is compared with the intensity of radiation having nearby wavelengths, and the relative magnitudes of the two intensities are used as an indication of whether flame is present or absent at the selected position.

REFERENCES:
patent: 3130310 (1964-04-01), Biberman et al.
patent: 3543260 (1970-11-01), Engh
patent: 3609364 (1971-09-01), Paine

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