reflectivemarkers.Toapplythereflectivemarkers,
waituntil theobjecttobemeasured hascometoa
standstill.
2.Theidealdistancetothemeasurementobjectis
between 10 and 40 cm.During themeasurement,
alwaysaimatthereflectivemarkerfromanangleof
approx.30 .Thisavoidsmultiplereflectionsfromthe
surface.
3.Ifnoreflectivemarkercan beattached,itmustbe
checkedwhetherthereflectivepropertiesofa
reflectivepointonthemeasurementobjectare
sufficientforrpmmeasurement. Inthiscase,aimat
themeasurementobjectfromthevertical,andcheck
whetheravalueisdisplayed.Ifthemeasurement
objectdisplaysseveralreflectionsperrevolution,the
numberofventilatorvanesmustbeset(e.g.reflective
ventilatorwith5vanes)inordertoobtaincorrectrpm
measurements.
4.IftheOLsymbolwill showontheLCD,itmeansthe