Method and apparatus for monitoring the burning efficiency of a furnace

摘要: A furnace burner flame monitoring method and apparatus are provided for controlling the fuel mixture in order to operate a at maximum burning efficiency. radiometer having an infrared detector views detects radiation emitted from flame. filter wheel is interposed between transmitting least three different, discrete, bands with thereby generating signals response received bands. control parameter derived using ratio of two which compensated length third generated by detector. The may then be utilized fuel/air burned thus maintaining