Hh solutions Hobo mx2300 series User manual

HOBO®MX2300SeriesDataLoggerManual

20923‐K

TheHOBOMX2300seriesdataloggersrecordandtransmittemperatureand/orrelative

humidity(RH)inoutdoororindoorenvironments.TheseBluetooth®LowEnergy‐enabled

loggersaredesignedforwirelesscommunicationwithamobiledevice.UsingtheHOBOmobile®

orHOBOconnect®app,youcaneasilyconfigurethelogger,readitout,andviewdataonyour

phoneortablet,orexportthedataforfurtheranalysis.Theloggercancalculateminimum,

maximum,average,andstandarddeviationstatisticsandbeconfiguredtoindicatealarmsat

thresholdsyouspecify.Theloggeralsosupportsburstlogginginwhichdataisloggedatafaster

intervalwhensensorreadingsareaboveorbelowcertainlimits.TheTempandTemp/RH

modelshaveinternalsensorswhiletheExternalTemp/RH,ExternalTemp,and2xExternal

Tempincludebuilt‐inexternalsensors,offeringawiderangeofsolutionsformonitoring

temperatureandRHinnumerousapplications.

Specifications

TemperatureSensor

RangeMX2301AandMX2305internalsensors:‐40to70°C(‐40to158°F)

MX2302Aexternaltemperaturesensor:‐40to70°C(‐40to158°F)

MX2303andMX2304externalsensors:‐40to100°C(‐40to212°F),with

tipandcableimmersioninfreshwaterupto50°C(122°F)foroneyear

Accuracy±0.25°Cfrom‐40to0°C(±0.45from‐40to32°F)

±0.2°Cfrom0to70°C(±0.36from32to158°F)

±0.25°Cfrom70to100°C(±0.45from158to212°F),MX2303and

MX2304only

ResolutionMX2301AandMX2302A:0.02°C(0.036°F)

MX2303,MX2304,andMX2305:0.04°C(0.072°F)

Drift<0.01°C(0.018°F)peryear

RelativeHumiditySensor*(MX2301A,MX2302Aonly)

Range0to100%RH,‐40°to70°C(‐40°to158°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±2.5%from10%to90%(typical)toamaximumof±3.5%including

hysteresisat25°C(77°F);below10%RHandabove90%RH±5%typical

Resolution0.01%

Drift<1%peryeartypical

ResponseTime(typical,to90%ofchange)

TemperatureWithoutSolar

RadiationShield

WithRS1/M‐RSA

SolarRadiationShield

WithRS3‐BSolar

RadiationShield

MX2301A

internalsensor

17minutesinair

moving1m/sec

24minutesinair

moving1m/sec

NA

MX2302A

externalsensor

3minutes,45seconds

inairmoving1m/sec

7minutes,45

secondsinair

moving1m/sec

6minutes,30

secondsinair

moving1m/sec

MX2303/MX2304

externalsensors

3minutesinair

moving1m/sec;20

secondsinstirred

water

7minutesinair

moving1m/sec

4minutesinair

moving1m/sec

MX2305

internalsensor

17minutesinair

moving1m/sec

24minutesinair

moving1m/sec

NA

RHWithoutSolar

RadiationShield

WithRS1/M‐RSA

SolarRadiationShield

WithRS3‐BSolar

RadiationShield

MX2301A

internalsensor

30secondsinair

moving1m/sec

40secondsinair

moving1m/sec

NA

MX2302A

externalsensor

15secondsinair

moving1m/sec

30secondsinair

moving1m/sec

30secondsinair

moving1m/sec



HOBOMX2300Series

DataLogger

Models:

MX2301A,temp/RH

MX2302A,exttemp/RH

MX2303,2exttemp

MX2304,exttemp

MX2305,temp

IncludedItems:

Screws

Cableties

RequiredItems:

Mobiledevicewith

Bluetooth

HOBOmobileappfor

deviceswithiOS

HOBOconnectappfor

deviceswithAndroid™

Accessories:

Solarradiationshield

(RS3‐Bforusewith

MX2302A,MX2303,and

MX2304models;RS1orM‐

RSAforusewithMX2301A

andMX2305models)

Mountingbracketforsolar

radiationshield(MX2300‐

RS‐BRACKET),forusewith

MX2301AandMX2305

models

Replacementbattery

(HRB‐2/3AA)



HOBOMX2300SeriesDataLoggerManual

1‐800‐LOGGERS2www.onsetcomp.com

Specifications(continued)



Logger

OperatingRange‐40°to70°C(‐40°to158°F)

RadioPower1mW(0dBm)

TransmissionRangeApproximately30.5m(100ft)line‐of‐sight

WirelessDataStandardBluetoothLowEnergy(BluetoothSmart)

LoggingRate1secondto18hours

LoggingModesFixedinterval(normal,statistics)orburst

MemoryModesWrapwhenfullorstopwhenfull

StartModesImmediate,pushbutton,date&time,ornextinterval

StopModesWhenmemoryfull,pushbutton,date&time,orafterasetlogging

period

TimeAccuracy±1minutepermonth0°to50°C(32°to122°F)

BatteryType2/3AA3.6Voltlithium,userreplaceable

BatteryLife2years,typicalwithloggingintervalof1minuteandBluetoothAlways

Onenabled;5years,typicalwithloggingintervalof1minuteand

BluetoothAlwaysOndisabled.Fasterloggingintervalsandstatistics

samplingintervals,burstlogging,remainingconnectedwiththeapp,

excessivedownloads,andpagingmayimpactbatterylife.

MemoryMX2301AandMX2302A:128KB(63,488measurements,maximum)

MX2303,MX2304,andMX2305:128KB(84,650measurements,

maximum)

FullMemoryDownloadTimeApproximately60seconds;maytakelongerthefurtherthedeviceis

fromthelogger

DimensionsLoggerhousing:10.8x5.08x2.24cm(4.25x2.0x0.88in.)

Externaltemperaturesensordiameter:0.53cm(0.21in.)

Externaltemperature/RHsensordiameter:1.17cm(0.46in.)

Externalsensorcablelength:2m(6.56ft)

Solarradiationshieldbracket:10.8x8.3cm(4.25X3.25in.)

WeightLogger:75.5g(2.66oz)

Solarradiationshieldbracket:20.4g(0.72oz)

MaterialsAcetal,siliconegasket,stainlesssteelscrews

EnvironmentalRatingNEMA6andIP67



TheCEMarkingidentifiesthisproductascomplyingwithallrelevant

directivesintheEuropeanUnion(EU).

 Seelastpage

*PerRHsensormanufacturerdatasheet



HOBOMX2300SeriesDataLoggerManual

1‐800‐LOGGERS3www.onsetcomp.com

LoggerComponentsandOperation



MountingHoles:Usetheholesatthetopandbottomofthe

loggertomountit(seeDeployingandMountingtheLogger).

AlarmLED:ThisLEDblinksredevery4secondswhenanalarm

istripped(unlessShowLEDisdisabledasdescribedin

ConfiguringtheLogger).

StatusLED:ThisLEDblinksblueevery4secondswhenthe

loggerislogging(unlessShowLEDisdisabledasdescribedin

ConfiguringtheLogger).Iftheloggeriswaitingtostartlogging

becauseitwasconfiguredtostart“OnButtonPush”orwitha

delayedstart,itwillblinkevery8seconds.

StartButton:Pressthisbuttontowakeupthelogger;boththe

alarmandstatusLEDswillblink.Oncetheloggerisawake,

pressthisbuttontomoveittothetopofthedeviceslistinthe

app.Pressthisbuttonfor3secondstostartorstopthelogger

whenitisconfiguredtostartorstop“Onbuttonpush”(see

ConfiguringtheLogger).BothLEDswillblinkfourtimeswhen

youpressthebuttontostartorstoplogging.Pressthisbutton

for10secondstoresetapassword(seeSettingaPassword).

ExternalSensor:Thisistheexternalprobeattachedtothe

bottomoftheloggerthatmeasurestemperatureor

temperature/RH.TheMX2302Aloggerhasoneexternalsensor

thatmeasuresbothtemperatureandRHandtheMX2304

loggerhasonesensorthatmeasurestemperatureonly.The

MX2303logger(shownatleftabove)hastwoexternal

temperaturesensors;theleftsensorischannel1andtheright

sensorischannel2.

Vent:TheRHsensorislocatedbehindthevent(MX2301A

modelonly).

DownloadingtheAppand

ConnectingtoaLogger

Installtheapptoconnecttoandworkwiththelogger.

1. IfyouareusinganiPhone®oriPad®:Download

HOBOmobilefromtheAppStore®.

IfyouareusinganAndroidphoneortablet:Download

HOBOconnectfromGooglePlay™.

2. OpentheappandenableBluetoothinthedevicesettingsif

prompted.

3. Pressthebuttonontheloggertowakeitup.

4. TaptheDevicesintheapp.(InHOBOmobile,tapLoggersat

thetopofthescreen.)Taptheloggerintheapptoconnect

toit.

Iftheloggerdoesnotappearorifitishavingtrouble

connecting,followthesetips:

Makesuretheloggeris“awake”bypressingthestart

button.ThealarmandstatusLEDswillblinkoncewhen

theloggerwakesup.Youcanalsopressthebuttona

secondtimetobringittothetopofthelistifyouare

workingwithmultipleloggers.

Makesuretheloggeriswithinrangeofyourmobile

device.Therangeforsuccessfulwirelesscommunication

isapproximately30.5m(100ft)withfullline‐of‐sight.

Ifthereareseveralloggersinthearea,movethelogger

toalocationwithfewerloggers.Interferencecan

sometimesoccurwhennumerousloggersareinone

location.

Ifyourdevicecanconnecttotheloggerintermittentlyor

losesitsconnection,moveclosertothelogger,within

sightifpossible.

Iftheloggerappearsintheapp,butyoucannotconnect

toit,closetheappandpowercyclethemobiledevice.

ThisforcesthepreviousBluetoothconnectiontoclose.

Onceconnectedtotheloggeryoucanselectoneofthe

followingactions:

ConfigureinHOBOmobileorinHOBOconnect.

Selectloggersettingsandloadthemontotheloggerto

startlogging.SeeConfiguringtheLogger.

ReadoutinHOBOmobileorinHOBOconnect.

Downloadloggerdata.SeeReadingOuttheLogger.

FullStatusDetailsinHOBOmobileorin

HOBOconnect.Checkinformationaboutthelogger.In

HOBOconnect,accesssomeoftheactionsdescribedin

thissection.

StartLogginginHOBOmobileorandthenin

HOBOconnect.Selectthisoptiontobeginlogging(ifthe

loggerisconfiguredtostart“OnButtonPush”as

describedinConfiguringtheLogger).

StopLogginginHOBOmobileorandthenin

HOBOconnect.Stoptheloggerfromrecordingdata.This

overridesanyStopLoggingsettingsdescribedin

ConfiguringtheLogger.

PageLoggerLEDinHOBOmobileorandthenin

HOBOconnect.Pressandholdthisoptiontoilluminate

thealarmandstatusLEDsfor4seconds.

LoggerPasswordinHOBOmobileorandthenin

HOBOconnect.Selectthistocreateapasswordforthe

loggerthatwillberequiredifanothermobiledevice

attemptstoconnecttoit.Toresetapassword,connect

tothelogger,tapSetLoggerPasskey,andselectResetto

AlarmLED

Mounting

Holes

StartButton

ExternalSensor

StatusLED

MX2303modelshown

Vent

MX2301Amodelshown

HOBOMX2300SeriesDataLoggerManual

1‐800‐LOGGERS4www.onsetcomp.com

FactoryDefaultinHOBOmobileortapandtapReset

inHOBOconnect..Youcanalsopressthebuttononthe

loggerfor10secondstoresetapassword.

UpdateFirmwareinHOBOmobileorandthenin

HOBOconnect.Whennewloggerfirmwareisavailable,

thisactionappearsinthelist.Selectitandfollowthe

instructionsonthescreen.Aloggerreadoutwillbe

completedautomaticallyatthebeginningofthe

firmwareupdateprocess.Iftheconnectionislost

betweentheloggerandthemobiledeviceduringthe

firmwareupdate,aFirmwareUpdatePendingStatus

displaysfortheloggerintheDeviceslist.Connecttothe

loggerandupdatethefirmwareagain(orselectRestore

LoggerifavailableinHOBOmobile).

Important:Beforeupdatingthefirmwareonthe

logger,checktheremainingbatterylevelbyselecting

FullStatusDetailsandmakesureitisnolessthan30%.

Makesureyouhavethetimetocompletetheentire

updateprocess,whichrequiresthattheloggerremains

connectedtothedeviceduringtheupgrade.

ForceOffload(HOBOmobileonly).Thismayappearifan

errorwasencounteredwhenloadingconfiguration

settings.Selectthistooffloadallthedataonthelogger

beforereconfiguringit.

ConfiguringtheLogger

Usetheapptosetupthelogger,includingselectingthelogging

options,configuringalarms,andothersettings.Thesesteps

provideanoverviewofsettingupthelogger.Forcomplete

details,seetheappuser’sguide.

1. Pressthebuttonontheloggertowakeitup.

2. Intheapp,taptheDevicesicon(inHOBOmobile,tap

Loggersatthetopofthescreen).Taptheloggerintheapp

toconnecttoit.Ifyouareworkingwithmultipleloggers,

youcanpressthebuttonontheloggerasecondtimeto

bringittothetopofthelist.

3. TapConfigureinHOBOmobileortapinHOBOconnect.

4. TapNameandtypeanameforthelogger(optional).In

HOBOmobile,tapDone.Ifnonameisselected,thelogger

serialnumberisusedasthename.

5. TapGrouptoaddtheloggertoagroup(optional).TapDone

orSave.

6. TapLoggingIntervalandchoosehowfrequentlythelogger

willrecorddataunlessoperatinginburstloggingmode(see

BurstLogging).Note:Ifyouconfigureanalarm,thelogger

willusetheloggingintervalyouselectedastherateto

checkforalarmconditions(alarmsarenotavailableifburst

loggingisconfigured).SeeSettingupAlarmsformore

details.

7. TapStartLoggingandselectwhenloggingwillbegin:

Now.Loggingwillbeginimmediatelyafterconfiguration

settingsareloadedonthelogger.

OnNextLoggingInterval.Loggingwillbeginatthenext

evenintervalasdeterminedbytheselectedlogging

interval.

OnButtonPush.Loggingwillbeginonceyoupressthe

buttonontheloggerfor3seconds.

OnDate/Time.Loggingwillbeginonadateandtimeyou

specify.Selectthedateandtime.InHOBOmobile,tap

Done.

TapDoneorSave.

8. TapStopLoggingandselecttheoptionsforwhenlogging

willend.

a. Chooseoneoftwomemoryoptions:

WhenMemoryFills.Theloggerwillcontinuerecording

datauntilthememoryisfull.

Never(WrapWhenFull).Theloggerwillcontinue

recordingdataindefinitely,withnewestdata

overwritingtheoldest.Thisoptionisnotavailableif

theLoggingModeissettoBurst(seeBurstLogging).

b. SelectOnButtonPushifyouwanttobeabletostop

loggingbypushingthebuttonontheloggerfor3

seconds.ForHOBOmobile:Notethatifyoualsochoose

OnButtonPushfortheStartLoggingoption,thenyou

willnotbeabletostoplogginguntil30secondsafter

loggingbegins.

c. Selectoneofthefollowingtimeoptionsforwhentostop

logging:

Never.Selectthisifyoudonotwanttheloggertostop

atanypredeterminedtimeframe.

OnDate/Time.Selectthisifyouwanttheloggerto

stoploggingonaspecificdateandtime.Selectthe

dateandtime.InHOBOmobile,tapDone.

After.Selectthisifyouwanttocontrolhowlongthe

loggershouldcontinueloggingonceitstarts.Choose

theamountoftimeyouwanttheloggertologdata

andthentapDone.Forexample,select30daysifyou

wanttheloggertologdatafor30daysafterlogging

begins.

d. TapDoneorSave.

9. TapLoggingMode.Selecteitherfixedorburstlogging.With

fixedlogging,theloggerrecordsdataforallenabledsensors

and/orselectedstatisticsattheloggingintervalselected

(seeStatisticsLoggingfordetailsonchoosingstatistics

options).Inburstmode,loggingoccursatadifferent

intervalwhenaspecifiedconditionismet.SeeBurst

Loggingformoreinformation.TapDoneorSave.

10. EnableordisableShowLED.IfShowLEDisdisabled,the

alarmandstatusLEDsontheloggerwillnotbeilluminated

whilelogging(thealarmLEDwillnotblinkifanalarmtrips).

YoucantemporarilyturnonLEDswhenShowLEDis

disabledbypressingthebuttonontheloggerfor1second.

11. EnableordisableBluetoothAlwaysOn.IfBluetoothAlways

Onisenabled,theloggerwill“advertise”orregularlysend

outaBluetoothsignalforthephoneortablettofindviathe

appwhileitislogging,whichusesbatterypower.When

BluetoothAlwaysOnisdisabled,theloggerwillonly

advertiseduringloggingwhenyoupressthebuttononthe

loggertowakeitup,therebypreservingasmuchbattery

poweraspossible.

12. Selectthesensormeasurementtypesthatwillbelogged.

BoththetemperatureandRHsensorsarerequiredto

calculatedewpoint,whichisanadditionaldataseries

HOBOMX2300SeriesDataLoggerManual

1‐800‐LOGGERS5www.onsetcomp.com

availableforplottingafterreadingoutthelogger.Youcan

alsosetupalarmstotripwhenasensorreadingrisesabove

orfallsbelowaspecifiedvalue.SeeSettingupAlarmsfor

detailsonenablingsensoralarms.NoteforMX2303models

only:Thefirsttemperaturesensorlistedischannel1and

thesecondischannel2(and“‐1”and“‐2”isusedinthe

columnheadingsinthedatafiletodifferentiatethetwo

sensors).

13. TapStartintheupperrightcorneroftheConfigurescreen

inHOBOmobileortapinHOBOconnect.

Loggingwillbeginbasedonthesettingsyouselected.Press

thestartbuttonontheloggerifyousetituptostartlogging

withabuttonpush.SeeDeployingandMountingtheLogger

fordetailsonmountingandseeReadingOuttheLoggerfor

detailsondownloading.

SettingupAlarms

Youcansetupalarmsfortheloggersothatifasensorreading

risesaboveorfallsbelowaspecifiedvalue,theloggeralarm

LEDwillblinkandanalarmiconwillappearintheapp.Thiscan

alertyoutoproblemssoyoucantakecorrectiveaction.

Tosetanalarm:

1. TaptheDevicesicon(inHOBOmobile,tapLoggersatthe

topofthescreen).Taptheloggerintheapptoconnectto

it.IftheloggerwasconfiguredwithBluetoothAlwaysOn

disabled,pressthebuttonontheloggertowakeitup.

Whenworkingwithmultipleloggers,youcanalsopressthe

buttonontheloggertobringittothetopofthelist.

2. TapConfigureinHOBOmobileortapinHOBOconnect.

3. Tapasensor(taptheEnableLoggingtogglein

HOBOconnectifnecessary).

4. EnabletheHighAlarminHOBOmobileorselectHighin

HOBOconnectifyouwantanalarmtotripwhenthesensor

readingrisesabovethehighalarmvalue.Dragtheslideror

typeavaluetosetthehighalarmvalue.

5. EnabletheLowAlarminHOBOmobileorselectLowin

HOBOconnectifyouwantanalarmtotripwhenthesensor

readingfallsbelowthelowalarmvalue.Dragtheslideror

typeavaluetosetthelowalarmvalue.

6. FortheDuration,selecthowmuchtimeshouldelapse

beforethealarmtripsandselectoneofthefollowing:

Cumulative.Thealarmwilltriponcethesensorreadingis

outoftheacceptablerangefortheselecteddurationany

timeduringlogging.Forexample,ifthehighalarmisset

to85°Fandthedurationissetto30minutes,thenthe

alarmwilltriponcethesensorreadingshavebeenabove

85°Fforatotalof30minutessincetheloggerwas

configured.

Consecutive.Thealarmwilltriponcethesensorreading

isoutoftheacceptablerangecontinuouslyforthe

selectedduration.Forexample,thehighalarmissetto

85°Fandthedurationissetto30minutes,thenthe

alarmwillonlytripifallsensorreadingsare85°For

aboveforacontinuous30‐minuteperiod.

7. TapDoneorSaveandrepeatsteps3–6fortheothersensor

ifdesired.

8. Intheconfigurationsettings,selectoneofthefollowing

optionstodeterminehowthealarmindicationsarecleared:

LoggerReconfigured.Thealarmindicationwilldisplay

untilthenexttimetheloggerisreconfigured.

SensorinLimits.Thealarmiconindicationwilldisplay

untilthesensorreadingreturnstothenormalrange

betweenanyconfiguredhighandlowalarmlimits.

9. TapStartinHOBOmobileorinHOBOconnect.

Whenanalarmtrips,theloggeralarmLEDblinksevery4

seconds(unlessShowLEDisdisabled),analarmiconappearsin

theapp,andanAlarmTrippedeventislogged.Thealarmstate

willclearwhenthereadingsreturntonormalifyouselected

SensorinLimitsinstep8.Otherwise,thealarmstatewill

remaininplaceuntiltheloggerisreconfigured.

Notes:

Alarmlimitsarecheckedateverylogginginterval.For

example,iftheloggingintervalissetto5minutes,then

theloggerwillcheckthesensorreadingsagainstyour

configuredhighandlowalarmsettingevery5minutes.

Theactualvaluesforthehighandlowalarmlimitsareset

totheclosestvaluesupportedbythelogger.Inaddition,

alarmscantriporclearwhenthesensorreadingiswithin

theresolutionspecifications.

Whenyoureadoutthelogger,alarmeventscanbe

displayedontheplotorinthedatafile.SeeLogger

Events.

BurstLogging

Burstloggingisaloggingmodethatallowsyoutosetupmore

frequentloggingwhenaspecifiedconditionismet.For

example,aloggerisrecordingdataata5‐minutelogging

intervalandburstloggingisconfiguredtologevery30seconds

whenthetemperaturerisesabove85°F(thehighlimit)orfalls

below32°F(thelowlimit).Thismeanstheloggerwillrecord

dataevery5minutesaslongasthetemperatureremains

between85°Fand32°F.Oncethetemperaturerisesabove

85°F,theloggerwillswitchtothefasterloggingrateandrecord

dataevery30secondsuntilthetemperaturefallsbackto85°F.

Atthattime,loggingthenresumesevery5minutesatthe

normallogginginterval.Similarly,ifthetemperaturefallsbelow

32°F,thentheloggerwouldswitchtoburstloggingmodeagain

andrecorddataevery30seconds.Oncethetemperaturerises

backto32°F,theloggerwillthenreturntonormalmode,

loggingevery5minutes.Note:Sensoralarms,statistics,andthe

StopLoggingoption“WrapWhenFull”arenotavailablein

burstloggingmode.

Tosetupburstlogging:

1. TaptheDevicesicon(inHOBOmobile,tapLoggersatthe

topofthescreen).Taptheloggerintheapptoconnectto

it.IftheloggerwasconfiguredwithBluetoothAlwaysOn

disabled,pressthebuttonontheloggertowakeitup.

Whenworkingwithmultipleloggers,youcanalsopressthe

buttonontheloggertobringittothetopofthelist.

2. TapConfigureinHOBOmobileortapinHOBOconnect.

3. TapLoggingModeandthentapBurstLogging.In

HOBOmobile,tapasensorunderBurstSensorLimits.

HOBOMX2300SeriesDataLoggerManual

1‐800‐LOGGERS6www.onsetcomp.com

4. SelectLowand/orHighandeithertypeordragthesliderto

setthelowand/orhighvalues.TapDoneinHOBOmobile.

5. Repeatstep4fortheothersensorifdesired.

6. TapDoneandrepeatsteps4–7fortheothersensorif

desired.

7. Settheburstlogginginterval,whichmustbefasterthanthe

logginginterval.Keepinmindthatthefastertheburst

loggingrate,thegreatertheimpactonbatterylifeandthe

shortertheloggingduration.Becausemeasurementsare

beingtakenattheburstloggingintervalthroughoutthe

deployment,thebatteryusageissimilartowhatitwouldbe

ifyouhadselectedthisrateforthenormallogginginterval.

TapDoneinHOBOmobile.

8. TapDoneorSave.

9. TapStartinHOBOmobileorinHOBOconnect.

Notes:

Thehighandlowburstlimitsarecheckedattheburst

loggingintervalratewhethertheloggerisinnormalor

burstcondition.Forexample,iftheloggingintervalisset

to1hourandtheburstloggingintervalissetto10

minutes,theloggerwillalwayscheckforburstlimits

every10minutes.

Ifhighand/orlowlimitshavebeenconfiguredformore

thanonesensor,thenburstloggingwillbeginwhenany

highorlowconditiongoesoutofrange.Burstloggingwill

notenduntilallconditionsonallsensorsarebackwithin

normalrange.

Theactualvaluesfortheburstlogginglimitsaresetto

theclosestvaluesupportedbythelogger.

Burstloggingcanbeginorendwhenthesensorreadingis

withintheresolutionspecifications.Thismeansthevalue

thattriggersburstloggingmaydifferslightlythanthe

valueentered.

Oncethehighorlowconditionclears,thelogging

intervaltimewillbecalculatedusingthelastrecorded

datapointinburstloggingmode,notthelastdatapoint

recordedatthenormalloggingrate.Forexample,the

loggerhasa10‐minuteloggingintervalandloggedadata

pointat9:05.Then,thehighlimitwassurpassedand

burstloggingbeganat9:06.Burstloggingthencontinued

until9:12whenthesensorreadingfellbackbelowthe

highlimit.Nowbackinnormalmode,thenextlogging

intervalwillbe10minutesfromthelastburstlogging

point,or9:22inthiscase.Ifburstlogginghadnot

occurred,thenextdatapointwouldhavebeenat9:15.

ANewIntervaleventiscreatedeachtimethelogger

entersorexitsburstloggingmode.SeeLoggerEventsfor

detailsonplottingandviewingtheevent.Inaddition,if

theloggerisstoppedwithabuttonpushwhileinburst

loggingmode,thenaNewIntervaleventisautomatically

loggedandtheburstconditioniscleared,evenifthe

actualhighorlowconditionhasnotcleared.

StatisticsLogging

Duringfixedlogging,theloggerrecordsdataforenabled

sensorsand/orselectedstatisticsatthelogginginterval

selected.Statisticsarecalculatedatasamplingrateyouspecify

withtheresultsforthesamplingperiodrecordedateach

logginginterval.Thefollowingstatisticscanbeloggedforeach

sensor:

Themaximum,orhighest,sampledvalue,

Theminimum,orlowest,sampledvalue,

Anaverageofallsampledvalues,and

Thestandarddeviationfromtheaverageforallsampled

values.

Forexample,aloggerisconfiguredwithboththetemperature

andRHsensorsenabled,andtheloggingintervalsetto5

minutes.TheloggingmodeissettofixedloggingwithNormal

andallfourstatisticsenabledandwithastatisticssampling

intervalof30seconds.Onceloggingbegins,theloggerwill

measureandrecordtheactualtemperatureandRHsensor

valuesevery5minutes.Inaddition,theloggerwilltakea

temperatureandRHsampleevery30secondsandtemporarily

storetheminmemory.Theloggerwillthencalculatethe

maximum,minimum,average,andstandarddeviationusingthe

samplesgatheredovertheprevious5‐minuteperiodandlog

theresultingvalues.Whenreadingoutthelogger,thiswould

resultin10dataseries(notincludinganyderivedseries,such

asdewpoint):twosensorseries(withtemperatureandRH

dataloggedevery5minutes)pluseightmaximum,minimum,

average,andstandarddeviationseries(fourfortemperature

andfourforRHwithvaluescalculatedandloggedevery5

minutesbasedonthe30‐secondsampling).

Tologstatistics:

1. TaptheDevicesicon(inHOBOmobile,tapLoggersatthe

topofthescreen).Taptheloggerintheapptoconnectto

it.IftheloggerwasconfiguredwithBluetoothAlwaysOn

disabled,pressthebuttonontheloggertowakeitup.

Whenworkingwithmultipleloggers,youcanalsopressthe

buttonontheloggertobringittothetopofthelist.

2. TapConfigureinHOBOmobileortapinHOBOconnect.

3. TapLoggingModeandthenselectFixedIntervalLoggingin

HOBOmobileorFixedLogginginHOBOconnect.

4. SelectNormaltorecordthecurrentreadingforeach

enabledsensorattheloggingintervalshownatthetopof

thescreen.Donotselectthisifyouonlywanttolog

statistics.

5. Selectthestatisticsyouwanttheloggertorecordateach

logginginterval:Maximum,Minimum,Average,and

StandardDeviation(averageisautomaticallyenabledwhen

selectingStandardDeviation).Statisticswillbeloggedforall

enabledsensors.Inaddition,themorestatisticsyourecord,

theshortertheloggerdurationandthemorememoryis

required.

6. TapStatisticsSamplingIntervalandselecttheratetouse

forcalculatingstatistics.Theratemustbelessthan,anda

factorof,thelogginginterval.Forexample,ifthelogging

intervalis1minuteandyouselect5secondsforthe

samplingrate,thentheloggerwilltake12samplereadings

betweeneachlogginginterval(onesampleevery5seconds

foraminute)andusethe12samplestorecordtheresulting

statisticsateach1‐minutelogginginterval.Notethatthe

fasterthesamplingrate,thegreatertheimpactonbattery

life.Becausemeasurementsarebeingtakenatthestatistics

samplingintervalthroughoutthedeployment,thebattery

usageissimilartowhatitwouldbeifyouhadselectedthis

HOBOMX2300SeriesDataLoggerManual

1‐800‐LOGGERS7www.onsetcomp.com

rateforthenormallogginginterval.TapDonein

HOBOmobile.

7. TapDoneorSave.

8. TapStartinHOBOmobileorinHOBOconnect.

SettingaPassword

Youcancreateanencryptedpasswordfortheloggerthatwill

berequiredifanotherphoneortabletattemptstoconnectto

it.Thisisrecommendedtoensurethatadeployedloggerisnot

mistakenlystoppedorpurposelyalteredbyothers.This

passwordusesaproprietaryencryptionalgorithmthatchanges

witheveryconnection.

Tosetapassword:

1. TaptheDevicesicon(inHOBOmobile,tapLoggersatthe

topofthescreen).Taptheloggerintheapptoconnectto

it.

2. TapLoggerPasswordinHOBOmobileortapandthen

inHOBOconnect.

3. TypeapasswordandthentapSaveorSet.

Onlythephoneortabletusedtosetthepasswordcanthen

connecttotheloggerwithoutenteringapassword;allother

mobiledeviceswillberequiredtoenterthepassword.For

example,ifyousetthepasswordfortheloggerwithyourtablet

andthentrytoconnecttothedevicelaterwithyourphone,

youwillberequiredtoenterthepasswordonthephonebut

notwithyourtablet.Similarly,ifothersattempttoconnectto

theloggerwithdifferentdevices,thentheywouldalsobe

requiredtoenterthepassword.Toresetapassword,pressthe

buttonontheloggerfor10secondsorconnecttothelogger

andthentapSetLoggerPasskeyandselectResettoFactory

DefaultinHOBOmobileortap,then,andtapResetin

HOBOconnect.

ReadingOuttheLogger

Tooffloaddatafromthelogger:

1. TaptheDevicesiconinHOBOmobile,tapLoggersatthetop

ofthescreen).Taptheloggerintheapptoconnecttoit.If

theloggerwasconfiguredwithBluetoothAlwaysOn

disabled,pressthebuttonontheloggertowakeup

communications.Whenworkingwithmultipleloggers,you

canalsopressthebuttonontheloggertobringittothetop

ofthelist.

2. TapReadoutinHOBOmobileortapinHOBOconnect.

3. InHOBOmobile:TaptheDataFilesiconandthentapthe

mini‐graphtoviewalargerversionofthegraphorshare

thefile.

InHOBOconnect:TaptheHOBOFilesiconandselectthe

filetoviewit.Tapandthentoexportandsharethe

data.

DatacanalsobeuploadedautomaticallytoHOBOlink,Onset’s

web‐basedsoftware,viatheapportheMXgateway.For

details,seetheappuser’sguideandseetheHOBOlinkhelpfor

detailsonworkingwithdatainHOBOlink.

LoggerEvents

Theloggerrecordsthefollowinginternaleventstotracklogger

operationandstatus.Youcanvieweventsinexportedfilesor

ploteventsintheapp.

ToploteventsinHOBOmobile,tapamini‐graphandthen

tap.Selecttheeventsyouwanttoplotandthentap

again.

ToploteventsinHOBOconnect,taptheHOBOFilesicon

andselectafiletoopen.Tapandthentap.Select

theeventsyouwanttoplotandtapOK.

InternalEventNameDefinition

HostConnectedTheloggerwasconnectedtothemobile

device.

StartedTheloggerstartedlogging.

StoppedTheloggerstoppedlogging.

Alarm

Tripped/Cleared

Analarmhasoccurredbecausethereading

wasoutsidethealarmlimitsorbackwithin

range.Note:Althoughthereadingmayhave

returnedtoanormalrangeduringlogging,

analarmclearedeventwillnotbeloggedif

theloggerwassetuptomaintainalarms

untilreconfigured.

NewIntervalTheloggerhasswitchedtologgingatthe

burstloggingrateorbacktothenormalrate.

SafeShutdownThebatteryleveldroppedbelowasafe

operatingvoltageandtheloggerperformed

asafeshutdown.

DeployingandMountingtheLogger

Followtheseguidelineswhendeployingthelogger:

AsolarradiationshieldisrequirediftheMX2301Aor

MX2305loggerortheexternalsensorsfroman

MX2302A,MX2303,orMX2304loggerwillbeinsunlight

atanytime.

WhenusingasolarradiationshieldwithanMX2301Aor

MX2305model,theloggermustbemountedusingthe

solarradiationshieldbracket(MX2300‐RS‐BRACKET)to

theundersideofthemountingplateasshownonthe

nextpage.

Formoredetailsonthesolarradiationshield,refertothe

SolarRadiationShieldInstallationGuideat

www.onsetcomp.com/manuals/rs1.



WhendeployinganMX2302Alogger,itisrecommended

thatthesensormustbemountedvertically.Ifitmustbe

mountedhorizontally,thenmakesuretheventonthe

HOBOMX2300SeriesDataLoggerManual

1‐800‐LOGGERS8www.onsetcomp.com

sideofthesensorisverticalorfacingdown.Ifthesensor

isbeingdeployedinanRS3‐Bsolarradiationshield,

mountitverticallyasshownbelow.



Whendeployingaloggerwithexternalsensors

(MX2302A,MX2303,andMX2304),mounttheloggerso

thesensorcableisnotbeingpulled.Leaveabout5cm(2

in.)ofdriploopinthecablewhereitcomesoutofthe

loggertopreventwaterfromenteringthelogger

housing.



ForMX2301AandMX2305loggersthatarenotbeing

deployedwithasolarradiationshieldorforloggerswith

externalsensors(MX2302A,MX2303,andMX2304),you

caneitherusetheincludedlargescrewsorcabletiesto

mounttheloggerviathemountingholes.Usethescrews

toattachtheloggertoawallorflatsurface.Usethe

cabletiestoaffixtheloggertoaPVCpipeormast.The

MX2301Aloggermustalsobemountedverticallyorwith

thesensorventfacingdownwhennotusingthesolar

radiationshield.

ProtectingtheLogger

Note:Staticelectricitymaycausetheloggertostoplogging.

Theloggerhasbeentestedto8KV,butavoidelectrostatic

dischargebygroundingyourselftoprotectthelogger.Formore

information,searchfor“staticdischarge”ononsetcomp.com.

BatteryInformation

Theloggerrequiresoneuser‐replaceable2/3AA3.6Vlithium

battery(HRB‐2/3AA).Batterylifeis2year,typicalwithalogging

intervalof1minute,butmaybeextendedto5yearswhenthe

loggerisconfiguredwithBluetoothAlwaysOndisabled.

Expectedbatterylifevariesbasedontheambienttemperature

wheretheloggerisdeployed,theloggingorsamplinginterval,

frequencyofoffloadingandconnectingtothemobiledevice,

numberofchannelsthatareactive,anduseofburstmodeor

statisticslogging.Deploymentsinextremelycoldorhot

temperaturesorloggingintervalfasterthan1minutecan

impactbatterylife.Estimatesarenotguaranteeddueto

uncertaintiesininitialbatteryconditionsandoperating

environment.

Toinstallorreplacethebattery:

1. UseaPhillips‐headscrewdrivertounscrewthefourscrews

fromthebackofthelogger.



2. Carefullyseparatethetopandbottomofthelogger

enclosure.

3. Removetheoldbatteryandinsertthenewbattery

observingpolarity.Itisrecommendedthatyoureplacethe

desiccant(DESICCANT2)whenreplacingthebattery.

4. Makesuretherubbersealiscleanandfreeofanydebris

andthencarefullyreassembletheloggerenclosureand

screwinthefourscrews.

WARNING:Donotcutopen,incinerate,heatabove85°C

(185°F),orrechargethelithiumbattery.Thebatterymay

explodeiftheloggerisexposedtoextremeheatorconditions

thatcoulddamageordestroythebatterycase.Donotdispose

oftheloggerorbatteryinfire.Donotexposethecontentsof

thebatterytowater.Disposeofthebatteryaccordingtolocal

regulationsforlithiumbatteries.





Unscrewthesefour

screwstoreplace

thebattery

DripLoop

HOBOMX2300SeriesDataLoggerManual



1‐800‐LOGGERS(564‐4377)•508‐759‐9500

www.onsetcomp.com/support/contact

HOBOlinkareregisteredtrademarksofOnsetComputerCorporation.AppStore,iPhone,andiPadareservice

marksorregisteredtrademarksofAppleInc.AndroidandGooglePlayaretrademarksofGoogleLLC.Bluetooth

andBluetoothSmartisaregisteredtrademarkofBluetoothSIG,Inc.Allothertrademarksarethepropertyoftheir

respectivecompanies.

Patent#:8,860,56920923‐K



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