FLAME SENSOR AND METHOD OF USING SAME

摘要

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 node radiation. The selectively amplified signal between 15 and 80 Hz is processe d by a microcontroller located remotely from the sensor and amplifier with microcontroller may terminate or continue burner operation. The integrity of the connection circuitry between the amplifier and the microcontroller is al so monitored and burner shutdown occurs if there is a fault in such circuitry.< /SDOAB>