User Manual

HOBO U14 Data Logger User Manual
4
SettingUptheHOBOU14
FollowtheseinstructionsforsettingupandlaunchingtheHOBOU14logger.
1. InsertthethreeAAAbatteries.Removethebatterydooronthebackoftheunitandinsertthebatteriesintheproper
direction.
2. IfyouareusingaRemoteAlarmand/orAutomaticDialer,connectittotheHOBOU14now.Otherwise,replacethe
batterycoverandgotostep3.
TheHOBOU14iscompatiblewithOnset’sRemoteAlarm(partnumberARA)andAutomaticDialer(partnumberAVD‐
45)availablefromOnsetComputeroranOnsetAuthorizedDealer.Seetheproduct’susermanualforcompletedetails.
The
interconnectwirerangeis22AWGto14AWG.ToconnectaRemoteAlarmorAutomaticDialertotheHOBOU14:
a. Loosenthetwoscrewsontherelay
terminal.(Removethebatterydoorif
necessary.)
b. Feedthewiresthroughthesmallholeat
thebottomofthecase.
c. Feedthe
wiresthroughtheholesinthe
relayterminal.
d. Tightenthescrewsontheterminal.
e. Replacethebatterycompartmentcover.
f. ConnectthewirestotheRemoteAlarmorAutomaticDialerusingthefollowingwiringdiagramsasguides.
AllthreedrawingsshowtheloggerintheNormallyClosedstate
withtheAlertinactive.TheHOBOU14’scontact
closureisinitiallysetatthefactorytobeNormallyClosed,butyoucanchangethisinHOBOwaretoaccommodate
NormallyOpendevices(seetheARAUser’sManual).
IfthealertoutputisconnectedtoaremotealarmconfiguredforNormallyClosedinputs,
youcanavoidfalsealarms
whentheloggerisdisconnectedbymakingatemporaryconnectionbetweenthewiresgoingtotheremotealarm.
Besuretodisconnectthistemporaryconnectionwhentheloggerisreconnectedtotheremotealarmwires.
HOBOU14withOnset’sARARemoteAlarm
NOTE:Thepolarityoftheconnectionstotheloggerdoesnotmatter.

HOBOU14withOnset’sAVD‐45AutomaticDialer
NOTE:Thepolarityoftheconnectionstotheloggerdoesnotmatter.