Teledyne 633 Carbon Monoxide Alarm User Manual


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Model 633 Aethalometer
®
Black Carbon Monitor User Manual Teledyne Advanced Pollution Instrumentation
8 07645A DCN6170
Figure2.Aethalometerdatasortedandaveragedaccordingtoloading(attenuation,ATN)onspot–
roadsidelocationinLondon,UK(top);urbansiteinBoston(Roxbury),USA(bottom).
TheLondondatashowasystematicreductionatincreasingloadings;whiletheBostondatado
not.Thisdemonstratesthatanymethodintendedtocompensateforthe‘spotloadingeffect’
mustbeauto‐adaptiveandabletoadjustdynamicallytodifferentsituations.Aninstrument
basedonfirmwarewithafixed‘loadingnon‐linearity’parameterwillnotoperatecorrectlyat
alllocations.The‘loadingnon‐linearity’parametermustbemeasured.
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