| 摘要 |
An infrared emittance combustion analyzer utilizing detectors (24) in a flam e burner (10) which monitor the radiation at two preselected wavelengths. The respective radiation signals are filtered to eliminate DC signal variations, rectified and converted into a DC value which is representative of the measured radiation signals. The respective DC values are formed into a ratio which is compared against a predetermined setpoint signal, and the error signal resulting from this comparison is utilized to drive an electromechanical controller (95) which adjusts either the air damper (22) o r the fuel damper (19) to adjust the fuel/air mixture which is fed into the burner (10).
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