Flame detection

Details Flame detection Flame detection

1989-09-21

1991-12-17

Dority, Carroll B.

Combustion

Process of combustion or burner operation

Controlling or proportioning feed

431 13, 431 50, 431 25, 431 78, 328 6, 340579, F23D 512

Patent

active

050731041

ABSTRACT:
A method and apparatus of detecting the condition of a flame having an emf by electrically conducting the emf generated by the flame as a signal to a sensor through an electrically isolated conductor means and sensing with said sensor an electrical parameter which is measure of the emf of the flame and wherein the parameter is the ratio of the A.C. and D.C. signal levels.

REFERENCES:
patent: 2003624 (1935-06-01), Bower
patent: 2407517 (1946-09-01), Ray
patent: 2511177 (1950-06-01), Richardson
patent: 2870329 (1959-01-01), Aubert
patent: 2903052 (1959-09-01), Aubert
patent: 3034571 (1962-05-01), Matthews
patent: 3302685 (1967-02-01), Ono et al.
patent: 3699905 (1972-10-01), Gach et al.
patent: 4107657 (1978-08-01), Nishigaki et al.
patent: 4672324 (1987-06-01), Kampen
patent: 4859171 (1989-08-01), Altemark et al.

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