The flue gas analyzer is an essential tool for proper combustion regulation. The visual appearance of the flame is not enough.
O₂
It indicates how much oxygen remains in the flue gas and is used to estimate excess air.
CO₂
It is related to the quality of combustion and the air-fuel ratio.
CO
High carbon monoxide levels indicate incomplete combustion and require immediate investigation.
Flue gas temperature
It is used together with the other measurements to evaluate losses and thermal efficiency.
Lambda
The λ value expresses the ratio of actual to theoretical combustion air and helps in the overall evaluation of the adjustment.