Flame detecting apparatus

Communications: electrical – Condition responsive indicating system – Specific condition

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G08B 1712

Patent

active

041076575

ABSTRACT:
A flame detecting apparatus comprises a flame detecting electrode and an auxiliary electrode both of which are in use disposed in a flame, and means to bias the auxiliary electrode to a DC potential different from that of the detecting electrode.

REFERENCES:
patent: 2127977 (1938-08-01), Lamb
patent: 2820945 (1958-01-01), Marsden, Jr.
patent: 3301307 (1967-11-01), Nishigaki et al.
patent: 3302685 (1967-02-01), Ono et al.
patent: 3836857 (1974-09-01), Ikegami et al.

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