Manual

MERLIN
P -WhenfirstpoweringupMERLIN,afterlongpoweroutages,orwhentotallyreset eakeakWind ting,theP
WinddirectionLEDswillnotfunctionuntilatleast1MPHwindhasbeenrecorded.
AverageWind-ThefirstreadingaftersettingtheAveragewillbethecurrentwindspeed.Thisreadingwill
settleoutasMERLINaccumulatesmoredata.Prevailingwinddirectionlightswillnotfunctionuntil12
minutesafterpoweringuporresetting.Aswiththewindspeedtherewillbenoprevailingdirection
indicationifthereisnotwind.
Forecast-WhenfirstpoweringupMERLIN,afterlongpoweroutages,orwhentotallyresetting,the
Forecastdisplaywillread"hld"(hold)for24minuteswhileMERLINisloadingitsmemory.Duringthe
25thminuteMERLINwillmakeatrendreading"inc"(increase),"dec"(decrease),"---"(nochange)
inwindspeedbasedoncomparingtwo12-minuteblocksoftime.Iftherehasbeennowindforan
entire12minutetiminginterval,thedirectionlightswillblankout.Ifthereisnowindforthenext
12minutesthenthedisplaywillshow"---"andthedirectionlightswillremainoff.
WindDirection-MERLINtakesareadingeverysecond Whenthewindchangesdirectionvery.
rapidly(fasterthan1second),somedirectionlightsmaynotlight.Thisisnormaloperationas
MERLINissimplybetweenreadings.
LatchUp-PowerLinedisturbancesorimproperpoweringup(plugginginthe
ACAdapterbeforewiring)cancauseablankorimproperdisplayreading.If
MERLINis"latchedup"proceedasfollows:
1.UnplugtheACadapter.
2.Wait15seconds.
3.PlugtheACadapterbackintoa110VACoutlet.
DuringlongpoweroutagesMERLIN'sdisplaywillblankoutandtheinstrumentwillnotcontinueto
accumulatedata.Itwillpreservethepreviouslyaccumulateddataforupto10years.
UsingtheForecastfunctionandperiodicallyupdatedAveragefunctiontogether,youcanoftenwatch
notonlysmallchangesinwindconditionsbutmoresignificant"backing"and"veering"patternsfortelling
frontalmovements.
IfyouareunsureastowhenForecastmadeit'slastupdate,waitmorethan12minutesandreadagain
(itupdatesevery12minutes).
WhenMERLINisinthe modesthedirectionlightsblink.Thisindicateseak, Average,andForecastP
thatyouareobservingrecordeddataandnotthepresentwinddirection.
SettingtheswitchtoAutodoesnoterasestoreddata.
Youdonotneedtotimethe6secondresettime,MERLINwillblankoutthedisplaytoindicatethatthe
memoryhasbeenerased.
OPERATION
(CONTINUED)
Page4
30BarnetBoulevard
NewBedford,MA02745
(508)995-2200