Oil-burner, flame-intensity, monitoring system and method of ope

Details Oil-burner, flame-intensity, monitoring system and method of ope Oil-burner, flame-intensity, monitoring system and method of ope

1994-03-22

1995-06-13

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Flame light source

340578, G01J 110

Patent

active

054245540

ABSTRACT:
Improved apparatus and method for selectively monitoring the light intensity emitted from an oil-burner flame for purposes of determining when the burner is in need of preventative maintenance. The apparatus features a monitoring system including: a sensor for detecting burner, flame-light intensity; a comparator for comparing the light intensity sensed to predetermined upper and lower limits; a display for indicating whether the burner is operating acceptably or whether it requires maintenance; and a discriminator for selectively coupling out-of-range, intensity indications representative of a need for maintenance to the display. The discriminator includes measurement-threshold circuitry for determining whether the burner has successfully ignited and whether the flame generated has been sustained long enough to assure thermal stabilization. Additionally, the discriminator includes gating circuitry for passing out-of-range, intensity measurements to the display elements only when predetermined, measurement-threshold conditions have been satisfied. The method features steps for: continuously sensing burner, flame-light intensity; comparing sensed, flame-light intensity to predetermined range limits; and selectively coupling out-of-range, intensity indications to a display for indicating the need for burner maintenance.

REFERENCES:
patent: 4904986 (1990-02-01), Pinckaers
patent: 5365223 (1994-11-01), Sigafus

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