Siemens LMV5 Series - Page 191

LMVSeriesTechnicalInstructions 
DocumentNo.LV5‐1000
SCCInc. Page19 Section6
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Figure6‐7:ExampleofTypicalLambdaFactorforO
2
ControlCurvesinFigure6‐6(above)
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TheLambdaFactorcurvesserveasatooltoevaluatehowaccurateandrepeatablethefundamental
mechanicalsystemsoftheburnerareandhowwellallthecurveswerecommissioned.Ingeneral,the
LambdaFactorcurveshouldbeasconstantor"flat"aspossible.Theactualnumericalvalueisnot
important,buttheconsistencybetweenpointsis.Anapproxi
mateguideforevaluationoftheLambda
Factor:
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 DifferenceinLambdaFactorbetweenadjacentpoints‐>lowernumbersarebetter.Max=0.45
(HighernumbersmayleadtoO
2
trimdeactivationsonsomeburnersduringmodulation).
 StandardDeviationofallpointsonthecurve‐>lowernumbersarebetter.Max=0.40(Higher
numbersmayleadtoO
2
trimdeactivationsonsomeburnersduringmodulation). 
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