Hobo HOBOnet RXW-THC-B Series User manual

HOBOnet®WirelessSensorNetwork 
RXWTemperature/RHSensor(RXW‐THC‐B‐xxx)Manual
24501‐A
ThissensormeasurestemperatureandRHandisdesignedtoworkwiththeHOBOnetWireless
SensorNetworkinwhichdataistransmittedwirelesslyfromthesensormoteacrossthe
networktothestationandthenuploadedtoHOBOlink®web‐basedsoftware.WithHOBOlink,
youcanmonitorsensorreadings,viewgraphs,setupalarms,downloaddata,andmore.
Specifications
SensorTemperatureRH
MeasurementRange‐40°Cto75°C(‐40°Fto167°F)0–100%RHat‐40°to75°C(‐40°to
167°F);exposuretoconditions
below‐20°C(‐4°F)orabove95%
RHmaytemporarilyincreasethe
maximumRHsensorerrorbyan
additional1%
Accuracy±0.25°Cfrom‐40°to0°C(±0.45°F
from‐40°to32°F)
±0.20°Cfrom0°to70°C(±0.36°F
from32°to158°F)
±0.25°Cfrom70°to100°C(±0.45°F
from158°to212°F)
±2.5%from10%to90%RH
typicaltoamaximumof±3.5%
includinghysteresisat25°C
(77°F);below10%andabove
90%±5%typical
Resolution0.02°C(0.036°F)0.01%RH
Drift<0.01°C(0.018°F)peryear<1%peryeartypical
ResponseTime(typical,to
90%ofchange)
3minutes,45secondsinair
moving1m/s
15secondsinairmoving1m/s
W
irelessMote
O
peratingTemperature
Range
‐40to70°C(‐40to158°F)
RadioPower12.6mW(+11dBm)non‐adjustable
TransmissionRangeReliableconnectionto457.2m(1,500ft)lineofsightat1.8m(6ft)high
Reliableconnectionto609.6m(2,000ft)lineofsightat3m(10ft)high
WirelessDataStandardIEEE802.15.4
RadioOperating
Frequencies
RXW‐THC‐B‐900:904–924MHz
RXW‐THC‐B‐868:866.5MHz
RXW‐THC‐B‐922:916–924MHz
ModulationEmployedOQPSK(OffsetQuadraturePhaseShiftKeying)
DataRateUpto250kbps,non‐adjustable
DutyCycle<1%
MaximumNumberof
Motes
50motesperoneHOBOnetwirelesssensornetwork
BatteryTypeTwoAA1.5Vlithiumbatteries
BatteryLife1year,typicaluse
Memory16MB
DimensionsSensor:45.97x11.43x10.16mm(1.81x0.45x0.40inches)
Mote:16.2x8.59x4.14cm(6.38x3.38x1.63inches)
Weight223g(7.87oz)
MaterialsSensor:Polyamide
Mote:PCPBT,siliconerubberseal
EnvironmentalRatingIP67,NEMA6
C
omplianceMarksRXW‐THC‐B‐900:Seelastpage

RXW‐THC‐B‐868:TheCEMarkingidentifiesthisproductas
complyingwithallrelevantdirectivesintheEuropeanUnion
(EU).
RXW‐THC‐B‐922:Seelastpage

RXWTemperature/
RHSensor
Models:
RXW‐THC‐B‐900(US)
RXW‐THC‐B‐868
(Europe)
RXW‐THC‐B‐922
(Australia/NZ)
IncludedItems:
Cableties
Screws


RXWTemperature/RHSensor(RXW‐THC‐B‐xxx)Manual
1‐800‐LOGGERS2www.onsetcomp.com
MoteComponentsandOperation

SensorMoteClosed,FrontSensorMoteClosed,Back


SensorMoteOpened
MountingTab:Usethetabsatthetopandbottomofthemote
tomountit(seeDeployingandMounting).
Sensor:Thisisthetemperature/RHsensorconnectedtothe
mote.
Eyelet:Usethiseyelettoattacha3/16inchpadlocktothe
moteforsecurity.
Latch:Usethetwolatchestoopenandclosethemotedoor.
GroundWirePort:Usethisporttoconnectagroundwire(see
DeployingandMounting).
Antenna:Thisisthebuilt‐inantennafortheradio
communicationsacrossthewirelessnetwork.
LEDs:TherearetwoLEDstotheleftoftheLCDscreen.The
greenLEDblinksduringtheprocessofjoininganetwork,
blinkingquicklywhilethemotesearchesforanetworkand
thenslowlyasthemoteregisterswiththenetwork.Oncethe
networkregistrationprocessiscomplete,theblueLEDblinksat
4secondstoindicatenormaloperation.Ifthemoteisnot
currentlypartofanetwork,theblueLEDwillbeoff.Iftheblue
LEDisonandnotblinking,thereisaproblemwiththemote.
ContactOnsetTechnicalSupport.
BatteryHolder:Thelocationwherethebatteriesareinstalled
asshown(seeBatteryInformation).
USBPort:Usethisporttoconnecttothemotetoacomputer
viaUSBcableifyouneedtoupdatethefirmware(seeUpdating
MoteFirmware).
Button:Pushthisbuttonfor1secondtoilluminatetheLCDor3
secondsforthemotetosearchforawirelesssensornetworkto
join(seeAddingtheMotetotheHOBOnetWirelessSensor
Network).
LCDScreen:ThemoteisequippedwithanLCDscreenthat
displaysdetailsaboutthecurrentstatus.Thisexampleshowsall
symbolsilluminatedontheLCDscreenfollowedbydefinitions
ofeachsymbolinthetable.

LCDSymbolDescription

Thebatteryindicatorshowstheapproximatebattery
chargeremaining.

Thisisasignalstrengthindicator.Themorebars,the
strongerthesignalbetweenmotes.Ifthereisnox
iconnexttothesignalstrengthindicator,thenthe
moteispartofaHOBOnetWirelessSensorNetwork.

Anemptysignalstrengthiconplusthexicon
indicatesthatthemoteisnotcurrentlypartofa
network.SeeAddingtheMotetotheHOBOnet
WirelessSensorNetworkfordetailsonhowtoadda
motetothenetwork.

Whenthemoteisintheprocessofjoininga
network,thesignalstrengthiconwillblinkandthen
thebarsintheiconwillcyclefromlefttoright.Thex
iconwillblinkduringthelaststepinthenetwork
registrationprocess(seeAddingtheMotetothe
HOBOnetWirelessSensorNetworkfordetails).

Thisindicatesaproblemwiththesensoritself(the
moteisoperational).Checkthesensorandmakeany
adjustmentstoitasneeded.ContactOnset
TechnicalSupportiftheproblempersists.
AddingtheMotetotheHOBOnetWireless
SensorNetwork
ThemotemustjoinaHOBOnetWirelessSensorNetwork
beforeitcanbeginmeasuringtemperatureandRHand
transmittingdata.Thisrequiresaccessingthestationandthe
moteatthesametimesoitisrecommendedthatyoucomplete
thesestepsbeforedeployingthemote.
Important:Ifyouaresettingupanewstation,followthe
instructionsinthestationquickstartbeforesettingupthis
mote(gotowww.onsetcomp.com/manuals/24500‐rx2105‐
and‐rx2106‐manualforRX2105andRX2106stationsor
www.onsetcomp.com/manuals/rx3000‐qsgforRX3000
stations).
Toaddamotetothenetwork:
1. IftheLCDisblankonthestation,pressanybuttontowake
itup.
2. PresstheSelectbuttononce(whichshowsthenumberof
smartsensorsinstalled)andthenpressitagaintoswitchto
Button
Latch
USBPort
BatteryHolder
LCDScreen
Mounting
Tab
Antenna
LEDs
Eyelet
GroundWire
Port
Sensor

RXWTemperature/RHSensor(RXW‐THC‐B‐xxx)Manual
1‐800‐LOGGERS3www.onsetcomp.com
themodulewiththemanager(module2onRX2105or
RX2106stations).

3. PresstheSearchbutton(themagnifyingglass).The
magnifyingglassiconwillblinkwhilethestationisinsearch
mode.

4. Openthemotedoorandinstallthebatteriesifyouhavenot
alreadydoneso.
5. Pressthebuttononthemotefor3seconds.Thesignal
strengthiconwillflashandthencycle.

6. WatchtheLCDonthemote.



Thisprocessmaytakeuptofiveminutes.ThegreenLED
blinksquicklywhilethemotesearchesforanetworktojoin
andthenblinksslowlywhileitcompletesthenetwork
registration.Oncethemotehasfinishedjoiningthe
network,thegreenLEDturnsoffandtheblueLEDthen
blinksindefinitelywhilethemoteispartofthenetwork.
Note:Ifthemotecannotfindthenetworkorhastrouble
remainingconnectedduringthisprocess,makesurethe
moteisinavertical,uprightpositionandwithinrangeof
thestation.
7. PresstheSearchbutton(themagnifyingglass)onthe
stationtostopsearchingformotes.

Ifyouaddedmorethanonemoremotetothenetwork,then
thetotalchannelcountforthemoduleonthestationLCDwill
representallmeasurementchannelsplusabatterychannelfor
eachmoteinthenetwork.
Sensormeasurementswillberecordedatthelogginginterval
specifiedinHOBOlink,transmittedtothestation,anduploaded
toHOBOlinkatthenextconnectioninterval(readout).Use
HOBOlinktomonitormotestatusandhealth.Ifamoteis
temporarilyoffline,anyloggeddataissaveduntilitisback
online.Inaddition,ifamoteisofflinefor30minutes,the
stationwillautomaticallyconnecttoHOBOlinkandreportthe
moteasmissing.Oncethemoteisbackonline,anyloggeddata
willbeuploadedthenexttimethestationconnectsto
HOBOlink.
SeetheHOBOlinkHelpfordetailsonhowtochangethelogging
andconnectionintervals,viewdata,checkmotestatus,addthe
motetoamap,andmore.
DeploymentandMounting
MountingandPositioningtheMote
Mountthemotetoamastorpipeusingcabletiesoraffix
themotetoawoodenpostorflatsurfacewithscrews.
Insertthecabletiesorscrewsthroughtheholesonthe
mountingtabs.
ConsiderusingplasticpolessuchasPVCtomountthe
moteascertaintypesofmetalcoulddecreasesignal
strength.
Makesurethemoteremainsinaverticalpositiononceitis
placedinitsdeploymentlocationforoptimalnetwork
communications.
Makesurethemotedoorisclosed,withbothlatchesfully
lockedtoensureatightseal.
Pressthisbuttontoviewthemodule
Pressthisbuttonsothestationisready
tohavemotesjointhenetwork
Pressthisbuttonfor
3secondsforthe
motetojointhe
network
Pressthisbuttonagainto
stopsearchingformotes
Thissignalstrengthicon
blinkswhilesearchingfor
anetwork.
c.
Onceanetworkisfound,
theiconwillstopflashing
andthebarswillcyclefrom
lefttoright.
d.
Thisnetworkconnection
“x”iconblinkswhilethe
motecompletesthe
registrationprocess,
whichmaytakeupto
five minutes.
Oncethemotehasfinishedjoining
thenetwork,the“x”iconis
removedandthechannelcount
onthestationLCDincreasesby
three(twofortemperature/RH
andoneforthemotebattery).
a.b.

RXWTemperature/RHSensor(RXW‐THC‐B‐xxx)Manual
1‐800‐LOGGERS4www.onsetcomp.com
Considerusinga3/16inchpadlocktorestrictaccesstothe
mote.Withthemotedoorclosed,hookapadlockthrough
theeyeletontherightsideofthedoorandlockit.
Makesurethemoteismountedaminimumof1.8m(6ft)
fromthegroundtohelpmaximizedistanceandsignal
strength.
Placethemotesothereisfulllineofsightwiththenext
mote.Ifthereisanobstructionbetweentwosensormotes
orbetweenthesensormoteandthemanager,thenusea
repeatermountedontheobstruction.
Thereshouldnotbemorethanfivemotesinanydirection
attheirmaximumtransmissionrangefromthemanager.
Dataloggedbyawirelesssensormusttravelor“hop”
acrossthewirelessnetworkfromonemotetothenext
untilitultimatelyreachesthemanagerconnectedtothe
station.Tomakesuredatacansuccessfullytravelacross
thenetwork,themoteshouldnotbemorethanfivehops
awayfromthemanager.
TheHOBOnetWirelessSensorNetworkcansupporta
maximumof50motes.
Usea#4‐40screwtoattachagroundwiretotheporton
thebackofthemoteifyouaredeployingthemoteina
locationwherelightningisaconcern.
SensorMountingGuidelines
Itisrecommendedthattheprobebeprotectedfromdirect
exposuretotheweather.Thiswillprolongthesensor
accuracy.
RefertothestationmanualandTripodSetupGuideat
www.onsetcomp.com/support/manualsformore
informationregardingsettingupstations.
Maintenance
Thetemperature/RHsensorissensitivetodust,saltsandother
airbornecontamination.PeriodicallyinspecttheRHsensor.If
contaminationispresentontheprotectivecap,gentlyrinseit
withcoolfreshwater.Ifthesensoritselfiscontaminated,you
canrinseitwithdistilledwater.Donotusehotwater,organic
solvents,ordetergents.Drybeforeuse.
Periodicallyinspectthemoteanddothefollowing:
Verifythemoteisfreeofvisibledamageorcracks.
Makesurethemoteisclean.Wipeoffanydustorgrime
withadampcloth.
Wipeoffanywaterbeforeopeningthemote.
Makesuretheinteriorsealisintactandthelatchesare
fullylockedwhenthemotedoorisclosed.
UpdatingMoteFirmware
Ifanewfirmwareversionisavailableforthemote,use
HOBOlinktodownloadthefiletoyourcomputer.
1. InHOBOlink,gotoDevices,thenRXDevices,andclickyour
stationname.
2. Onthestationpage,clickOverviewandscrolldownto
DeviceInformation.
3. ClicktheWirelesstab.Thisiconappearsnexttothe
moteifthereisanewversionoffirmwareavailable.
4. Clickthefirmwareupgradelink.ClickDownloadand
savethefirmware.binfiletoyourcomputer.
5. ConnectthemotetothecomputerwithaUSBcable(open
themotedoorandusetheUSBporttotherightofthe
LCD).TheblueLEDisilluminatedwhileconnected.
6. Themoteappearsasanewstoragedeviceinthe
computer’sfilestoragemanager.Copythedownloaded
firmwarefiletothenewstoragedevice(themote).The
blueLEDwillblinkslowlywhilethefileiscopying.
7. Afterthefileiscopiedtothemote,theLEDwillstop
blinkingandremainasteadyblue.Ejectthestoragedevice
fromthecomputeranddisconnectthecablefromthe
mote.Thefirmwareinstallationprocesswillbegin
automaticallyonthemote.TheblueLEDwillblinkrapidly
whilethefirmwareisinstalled.Oncethefirmware
installationiscomplete,theLCDsymbolsreturnandthe
motewillautomaticallyrejointhenetwork.
Notes:
Mac®users:Amessagemayappearindicatingthedisk
hasnotejectedproperlywhendisconnectingthemote
fromthecomputer.Themoteisoperationalandyoucan
ignorethemessage.
IftheblueLEDturnsoffabruptlywhilecopyingthefileor
installingthefirmware,aproblemhasoccurred.Contact
OnsetTechnicalSupportforhelp.
BatteryInformation
Themoteusestwo1.5Vlithiumbatteries(HWSB‐LI).Lithium
batterylifeisanestimatedat1year,butvariesbasedonthe
ambienttemperaturewherethemoteisdeployed,thelogging
interval,thenumberoftrippedalarms,andotherfactors.
Estimatesarenotguaranteedduetouncertaintiesininitial
batteryconditionsandoperatingenvironment.
Toinstalllithiumbatteries:
1. Openthemotedoor.
2. Removeanyoldbatteriesandinstallthenewones
observingpolarity.
Themotecontactsthenetworkoncethenewbatteriesare
installed.ThegreenLEDblinksquicklywhilethemotesearches
foranetworktojoinandthenblinksslowlywhileitcompletes
thenetworkregistration.Oncethemotehasfinishedjoining
thenetwork,thegreenLEDturnsoffandtheblueLEDthen
blinksindefinitelywhilethemoteispartofthenetwork.
WARNING:Donotcutopen,incinerate,heatabove85°C
(185°F),orrechargethelithiumbatteries.Thebatteriesmay
explodeifthemoteisexposedtoextremeheatorconditions
thatcoulddamageordestroythebatterycases.Donotmix
batterytypes,eitherbychemistryorage;batteriesmayrupture
orexplode.Donotdisposeoftheloggerorbatteriesinfire.Do
notexposethecontentsofthebatteriestowater.Disposeof
thebatteriesaccordingtolocalregulationsforlithium
batteries.

RXWTemperature/RHSensor(RXW‐THC‐B‐xxx)Manual


1‐800‐LOGGERS(564‐4377)•508‐759‐9500
www.onsetcomp.com/support/contact
©2020OnsetComputerCorporation.Allrightsreserved.Onset,HOBO,andHOBOlinkareregistered
trademarksofOnsetComputerCorporation.MacisaregisteredtrademarkofAppleInc.Allothertrademarks
arethepropertyoftheirrespectivecompanies.
24501‐A
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FederalCommunicationCommissionInterferenceStatement
ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigitaldevice,pursuanttoPart15oftheFCCRules.Theselimitsaredesignedtoprovide
reasonableprotectionagainstharmfulinterferenceinaresidentialinstallation.Thisequipmentgeneratesusesandcanradiateradiofrequencyenergyand,ifnotinstalledand
usedinaccordancewiththeinstructions,maycauseharmfulinterferencetoradiocommunications.However,thereisnoguaranteethatinterferencewillnotoccurina
particularinstallation.Ifthisequipmentdoescauseharmfulinterferencetoradioortelevisionreception,whichcanbedeterminedbyturningtheequipmentoffandon,theuser
isencouragedtotrytocorrecttheinterferencebyoneofthefollowingmeasures:
Reorientorrelocatethereceivingantenna
Increasetheseparationbetweentheequipmentandreceiver
Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthereceiverisconnected
Consultthedealeroranexperiencedradio/TVtechnicianforhelp
ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothefollowingtwoconditions:(1)Thisdevicemaynotcauseharmfulinterference,and(2)thisdevice
mustacceptanyinterferencereceived,includinginterferencethatmaycauseundesiredoperation.
FCCCaution:Anychangesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliancecouldvoidtheuser'sauthoritytooperatethisequipment.
IndustryCanadaStatements
ThisdevicecomplieswithIndustryCanadalicense‐exemptRSSstandard(s).Operationissubjecttothefollowingtwoconditions:(1)thisdevicemaynotcauseinterference,and
(2)thisdevicemustacceptanyinterference,includinginterferencethatmaycauseundesiredoperationofthedevice.
Avisdeconformitépourl’IndustrieCanada
LeprésentappareilestconformeauxCNRd'IndustrieCanadaapplicablesauxappareilsradioexemptsdelicence.L'exploitationestautoriséeauxdeuxconditionssuivantes:(1)
l'appareilnedoitpasproduiredebrouillage,et(2)l'appareildoitacceptertoutbrouillageradioélectriquesubi,mêmesilebrouillageestsusceptibled'encompromettrele
fonctionnement.
TocomplywithFCCandIndustryCanadaRFradiationexposurelimitsforgeneralpopulation,theloggermustbeinstalledtoprovideaseparationdistanceofatleast20cmfrom
allpersonsandmustnotbeco‐locatedoroperatinginconjunctionwithanyotherantennaortransmitter.
