Self-checking flame failure control

Details Self-checking flame failure control Self-checking flame failure control

1981-09-18

1983-07-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Flame light source

250209, G01J 100

Patent

active

043956386

ABSTRACT:
This invention relates to control circuits of the type which continuously monitor their own performance so as to be self-checking, i.e., to produce a response whenever the system shows the absence of a condition being monitored or a change therein and also produces a response if the control system itself should become inoperative or otherwise malfunction.

REFERENCES:
patent: 4206454 (1980-06-01), Schapira et al.

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