Flame sensor and method of using same
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United States of America Patent
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Nov 25, 2003
Grant Date -
N/A
app pub date -
May 26, 2000
filing date -
May 26, 2000
priority date (Note) -
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Abstract
A flame sensor for sensing the presence of a flame in a burner. The signal from the sensor is passed to an amplifier located adjacent to the sensor and amplified without having a sensor signal contaminated with common mode radiation. The selectively amplified signal between 15 and 80 Hz is processed by a microcontroller located remotely from the sensor and amplifier which microcontroller may terminate or continue burner operation. The integrity of the connection circuitry between the amplifier and the microcontroller is also monitored and burner shutdown occurs if there is a fault in such circuitry.
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