Flame sensor verification

Details Flame sensor verification Flame sensor verification

1995-05-03

1998-03-03

Jones, Larry

Combustion

Timer, programmer, retarder or condition responsive control

With test circuit checking or analyzing flame sensing...

431 24, 431 66, 431 77, 431 78, 431 12, 126116A, F23Q 2300

Patent

active

057228221

ABSTRACT:
Method and apparatus are disclosed for checking the responsiveness of a circuit which senses the presence of a flame produced by a burner within a furnace. A programmed processor associated with the circuit measures the time the circuit takes to indicate the presence of a flame. A warning is generated when the measured time exceeds a predetermined allowable time. The allowable time is determined by taking into account the decreased responsiveness of an electrode that indicates the presence of the burner flame.

REFERENCES:
patent: 5439374 (1995-08-01), Jamieson
patent: 5472336 (1995-12-01), Adams et al.

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