Monitoring for the presence of a flame in a burner
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United States of America Patent
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Feb 15, 2000
Grant Date -
N/A
app pub date -
Jan 20, 1999
filing date -
Jan 20, 1999
priority date (Note) -
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Abstract
A method of monitoring for the presence of a flame in a burner includes the steps of providing a UV bulb sensor (1) whose electrical output signal in response to a voltage applied across the sensor varies according to the presence or absence of UV light radiating from a burner flame, connecting the sensor across a voltage source (2) which is adjustable, the voltage source being set at a first setting, and monitoring the output signal from the bulb sensor during operation of the burner and automatically altering the setting of the voltage source from the first setting in accordance with the monitored output signal to maintain the output signal within a predetermined range.
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