User Manual - Model AN25 - Hygro Thermo-Anemometer
AN25-EU-EN V1.3 6/13
SupportLines:U.S.(877)439‐8324;International:+1(603)324‐7800
Productspecificationsaresubjecttochangewithoutnotice
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FLIRCommercialSystems,Inc.,9TownsendWest,Nashua,NH03063USA
ISO9001Certified
Introduction
ThankyouforselectingtheExtechModelAN25HygroThermo‐
Anemometer.Pleasevisitourwebsite(www.extech.com)tocheckfor
thelatestversionofthisUserGuideortocontactCustomerCare.
Operation
SwitchingtheMeterON/OFF
PressthePOWERbuttontoswitchthemeterON
PressandholdPOWERforapprox.3secondstoswitchOFF
Themeter’sAutoPowerOFFfeat ureturnsthemeterOFFafter15
minutesofinactivity
ChangingtheAirVelocityUnits
Withthemeterin
airflowmeasurementmodepressHOLDforapprox.3
secondstochangeairflowunitsfromm/s,KMH,M/H,FPM,BFT,KNT
andthenbacktom/s.SeeSpecificationsforicondefinitions.
ChangeModesandTemperatureunits
PressMODEbuttontoselectthedesiredmode:WNCL(wind‐chill),
TEMP,
RH,HI(heatindex),DP(dewpoint),WB(wetbulb),WBGT(wet
bulbglobe),andbacktom/s.
FromanytemperaturemodepresstheHOLDbuttontochange
temperatureunits(°C/°F).
MAX/AVGMode
WiththemeterONpressthePOWERbutton.TheMA Xicon will
displayon
theLCDwiththehighest(maximum)reading.
PressPOWERagain.TheAVG(average)iconwilldisplayontheLCD.
PressthePOWERbuttontostepthroughtheaveragingtime
selections(5sec,10sec,andto13sec).Afterselectingtheaveraging
timethemeterwillbeginaveragingreadings.
Toexit
theMAX/AVGmode,repeatedlypressthePOWERbuttonuntil
MAXandAVGiconsswitchOFF.
DataHold
PresstheHOLDbuttontofreezethedisplayedreading.TheHOLDicon
willappearonthedisplay.
PressHOLDbuttonagaintoreturntonormaloperatingmode.
AutoPowerOFF
The
meterwillpowerOFFafterabout15minutesofinactivity.
TodisableAutoPowerOFF:WiththemeterswitchedOFF,pressthe
HOLDandPOWERbuttonsuntilthemeterswitchesON.
The'n'iconwillbedisplayedontheLCDandthemeterwillreturnto
normaloperating
mode.
NowthemeterwillnotswitchOFFuntiltheusermanuallyswitchesit
OFF.Notethatonthenextcycleofpower,themeterwillreverttothe
AutoPowerOFFmode.
ErrorMessages
Er1:SensorError(replaceunit);Er2:Measurementoutofrange
ImportantNote:Ifthemeter
isplacednearasourceofelectricitythe
electricalsignalmayaffectthemeter’sdisplayedreading.
MeterDescription
1 Vaneimpeller
2 RelativeHumidity&Temperaturesensors
3 LCDdisplay
4 POWERbutton
5 HOLDbutton
6 MODEbutton
7 Batterycompartment(onrear)
8 Tripodmountinghole
9 Impellersetscrew(onside)
Specifications
Measurements Range Resolution Accuracy
m/s(meterspersecond) 0.40to25m/s 0.1m/s
80to999ft/min 0.1ft/minFPM(feetperminute)
1000to4922ft/min 1ft/min
KMH(kilometersperhour) 1.4to90.0km/hr 0.1km/hr
M/H(milesperhour) 0.9to55.9mph 0.1mph
±(3%FS)
BFT(beaufort) 0to10 1BFT ±1BFT
KNT(knots) 0.8to48.6knots 0.1knots ±(3%FS)
Temp./WNCL(Wind‐chill)‐15to50
o
C(5to122
o
F) 0.1
o
C/F ±1
o
C(±1.8
o
F)
RH(relativehumidity) 5to95%RH 0.1%RH ±3%RH*
WB(wetbulb)‐15to50
o
C(5to122
o
F) 0.1
o
C/F
DP(dewpoint)‐75to50
o
C(‐103to122
o
F) 0.1
o
C/F
HI(heatindex)‐35to205
o
C(‐31to401
o
F) 0.1
o
C/F
WBGT(wetbulbglobe)‐29to54
o
C(‐20to130
o
F) 0.1
o
C/F
Calculation
*@25
o
C10‐90%RHotherwise±5%RH
GeneralSpecifications
Display 28x14mm(1.1x0.5”)LCDwithlowbattery&
multifunctionindicators
Max/Avg/HoldModes Maxshowshighestreading;AVGaveragesreadings;
DataHoldfreezesthedisplay
Operatingconditions 0to50
o
C(32to122
o
F)/<80%RH
Powersupply Lithiumbattery(CR‐2032orequivalent)
Dimensions/weight 152x40x18mm(6.0x1.6x0.7”);60g(2.1oz.)
BatteryReplacement
Themeterhasalowbatteryindicator(BAT).Important:Turnthemeter
offbeforeopeningthebatterycompartment.Usingacoin,turnthe
batterycompartmentcoverCOUNTER‐CLOCK WISEtoremoveit.Once
opened,observethepositionofthebattery,placingthenewoneinthe
sameposition.Securethebatterycompartmentcoveranddisposeof
thelithiumbatteryinaccordancewithlocal,state,ornationaldisposal
codes.
Never
disposeofusedbatteriesorrechargeablebatteries
inhouseholdwaste.
Asconsumers,usersarelegallyrequiredtotakeused
batteriestoappropriatecollectionsites,theretailstore
wherethebatterieswerepurchased,orwherever
batteriesaresold.
Disposal:Donotdisposeofthisinstrumentinhouseholdwaste.The
useris
obligatedtotakeend‐of‐lifedevicestoadesignatedcollection
pointforthedisposalofelectricalandelectronicequipment.
ImpellerReplacement
ThereplacementpartnumberfortheimpellerkitisAN25‐V(two
impellersaresupplied).Loosenandremovetheimpellersetscrew(9)
andthen,fromthebackofthemeter,turntheimpellercounter‐
clockwisetoremove.Insertnewimpellerandturnitclockwisetolock
it.Insertandtighten
theimpellersetscrewtocompletethe
replacement.
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