G - Physics – 08 – B
Patent
G - Physics
08
B
340/155.1
G08B 17/12 (2006.01) F23N 5/08 (2006.01)
Patent
CA 1327390
APPARATUS AND METHOD FOR DETECTING THE PRESENCE OF A BURNER FLAME ABSTRACT A flame detecting device for rendering an indica- tion of the presence or absence of a flame is provided, wherein said device comprises a means for sensing a first radiation spectrum from said flame, said first spectrum being characterized by a first wavelength range, said first radiation sensing means for producing a first signal that varies according with at least one characteristic of said first spectrum; means for sensing a second radiation spectrum from said flame, said second spectrum being characterized by a second wavelength range, said second radiation sensing means for producing a second signal that varies according with at least one characteristic of said second spectrum; means for storing information defining standards for said first and second signals in terms of said first and second characteristics respectively; computer means for receiving said first and second signals and comparing said signals to said first and second standards respectively in accordance with at least one program for so comparing said first and second signals and generating an output signal representative of the presence or absence of said flame in accordance with said program; and output means responsive to said output signal for registering an indication of the presence or absence of said flame.
594781
Fabry Roland
Leonard John R.
Hamworthy Engineering Canada
Perley-Robertson Hill & Mcdougall Llp
LandOfFree
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