Specifications

HOBOMXSoilMoisture(MX2306) andMXSoilMoistureandTemperature(MX2307)DataLoggerManual
1‐508‐759‐9500(U.S.andInternational) 7 www.onsetcomp.com
1‐800‐LOGGERS(U.S.only) 
SettingaPassword
Youcancreateanencryptedpasswordfortheloggerthatwill
berequiredifanotherdevice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Devices.Pressthebuttonontheloggertowakeitup(if
necessary).Taptheloggerintheapptoconnecttoit.
2. Tap(ifapplicable)andthen .
3. TypeapasswordandthentapSet.
Onlythedeviceusedtosetthepasswordcanthenconnectto
theloggerwithoutenteringapassword;allother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logger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,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tap(if
applicable),then ,andtapReset.
ReadingOuttheLogger
Tooffloaddatafromthelogger:
1. TapDevices.Pressthebuttonontheloggertowakeitup(if
necessary).
2. Taptheloggerintheapptoconnecttoitandtap .The
loggerwillreadoutthedatatothephone,tablet,or
computer.
3. Oncethereadoutiscomplete,tapHOBOFilesandselect
thefiletoviewit.Tap(ifapplicable)andtapto
export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,tapHOBOFilesandselectafiletoopen.
Tap(ifapplicable)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.
InternalEventName  Definition
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.
InstallingtheSoilMoistureSensor
Therearetwoinstallationmethodsforinstallingthesoil
moisturesensor:boreholeortrench.
BoreholeInstallationMethod
Thismethodallowsforaprofileofsoilmoisturesensorstobe
installedatdifferentdepthswithinasingleaugeredborehole,
therebyminimizingsoildisturbanceatthemeasurementsite.A
10‐cm(4‐inch)boreholeisaugeredverticallyatthe
measurementlocation.Youcanthencarefullyinsertandplace
thesensorbyhandorbuyorrenttheBoreholeInstallationTool
fromMeter(recommendedfordepthsgreaterthan50cm(19.7
inches).EmailMeterat[e-mail](NorthAmerica)
or[e-mail](Europe)fordetailsonbuying
orrentingthetool.

IfinstallingthesensorwithouttheBoreholeInstallationTool,
lookdowntheholewithaflashlight,reachinwiththesensor
andpushitintotothesideoftheundisturbedsoil.Lookdown 
theholeagainandmakesureitisfirmlyseated.Youcan
also
considerattachingthesensortoPVCpipingorsimilarmaterial
toaidinplacingthesensor.YoucanthenusethePVCasalever
toassistwithpushingthesensorintotheundisturbedsoil.