Method and apparatus for monitoring flame condition

Details Method and apparatus for monitoring flame condition Method and apparatus for monitoring flame condition

1985-07-15

1987-01-27

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

250554, 340577, 431 79, G08B 1706

Patent

active

046397175

ABSTRACT:
A flame monitor senses flame brightness and produces two signals corresponding to rapid brightness variations and average brightness. By comparing rapid signal variations to a fraction of the average a threshold ON-OFF signal representing normal flame operation is obtained that can be processed as a fail-safe indication and control. High and low limit thresholds can be set and compared with average brightness as a further condition of proper flame operation.

REFERENCES:
patent: 2811711 (1957-10-01), Cade et al.
patent: 3805258 (1974-04-01), Longrigg
patent: 3824391 (1974-07-01), Noltingk et al.
patent: 3995221 (1976-11-01), MacDonald
patent: 4039844 (1977-08-01), MacDonald
patent: 4368031 (1983-01-01), Chadshay

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