Dwyer Instruments ULS Series User manual

L‐ULS
RevAMN8905701of30
SeriesULS
SmallTankUltrasonicTransmitter,SwitchandController
SeriesULSS,ULSM,ULSLManual

2of30MN890570RevA
INTRODUCTION/TABLEOFCONTENTSStepOne
SeriesULSisaninnovativelevelsensorfamilythatreplacesfloat,conductanceandpressuresensorsthatfail
duetocontactwithdirty,stickingandscalingmediainsmall(<4’/1.25m)tomedium(<18’/5.5m)talltanks.
Appliedinskid,machine,toolandprocessapplications,thegeneralpurposesensorsareavailablewithsingle
andmulti‐functioncapabilitiesincludingmeasurement,switchingandcontrol.
Features
SimpleconfigurationwithULSX‐CALsoftware,nomoretargetcalibration
AdjustableLoopFail‐Safe
EasytoreversemAoutput
Increasedoutputfiltering
TableofContents
Specifications:.........................................................................................................................................................3
Dimensions: .........................................................................................................................................................4
SafetyPrecautions:................................................................................................................................................5
Components:.........................................................................................................................................................6
GettingStarted:......................................................................................................................................................7
USBFobInterface:.....................................................................................................................................7
ULSX‐CAL: .........................................................................................................................................................8
Configuration:............................................................................................................................................9
TankLevels&RelayValues:.....................................................................................................................16
WritetoUnit&WiringDiagram:.............................................................................................................17
Wiring: .......................................................................................................................................................18
WireConnections:....................................................................................................................................18
SwitchInductiveLoads:............................................................................................................................19
Installation:.......................................................................................................................................................20
MountingGuide:......................................................................................................................................20
FittingSelection:......................................................................................................................................21
TankAdapter:...............................................................................................................................21
Riser:............................................................................................................................................21
Flange:..........................................................................................................................................22
SideMountFitting:......................................................................................................................22
StandPipe:...................................................................................................................................23
AdvancedFeature:...............................................................................................................................................24
Appendix:.......................................................................................................................................................26
UpdatingULSX‐CALSoftware:..................................................................................................................26
UpdatingTransmitterFirmware:.............................................................................................................27
Troubleshooting:..................................................................................................................................................28
FactoryDefaults:......................................................................................................................................28
SolutionTable:.........................................................................................................................................29
Maintenance&Repair:........................................................................................................................................30

Rev5MN8905703of30
SPECIFICATIONS StepTwo
Range:ULSS:49.2”(1.25m)
ULSM:9.8’(3.0m)
ULSL:18.0’(5.5m)
Accuracy:ULSS:0.125”(3mm)
ULSM:+/‐0.2%ofrange
ULSL:+/‐0.2%ofrange
Resolution:ULSS:0.019”(0.5mm)
ULSM:0.039”(1mm)
ULSL:0.079”(2mm)
Deadband:ULSS:2”(5cm)
ULSM:4”(10cm)
ULSL:8”(20cm)
Beamwidth:ULSS:2”(5cm)dia.
ULSM:2”(5cm)dia.
ULSL:3”(7.6cm)
Configuration:ULSX‐CAL®PC
WindowsUSB2.0
Memory:Non‐volatile
Supplyvoltage:12‐28VDC
Consumption:0.5W
Loopresistance:400Ohmsmax
Signaloutput:4‐20mA,two‐wire
Signalinvert:4‐20mAor20‐4mA
Signalfail‐safe:4mA,20mA,21mA,22mAor
holdlast
Contacttype:(4) SPSTrelays
Contactrating:60VA,1Amaximum
Contactfail‐
safe:
Powerloss:Holdlast,
Poweron:Open,closeorholdlast
Hysteresis:Selectable
Processtemp.:F:20°to140°
C:‐7°to60°
Temp.comp.:Automatic
Ambienttemp.:F:‐31°to140°
C:‐35°to60°
Pressure:MWP=30PSI
Enclosurerating:Type6Pencapsulated,corrosion
resistance&submersible(IP68)
Encl.material:Polycarbonate
Strainrelief
material:
Santoprene
Trans.material:PVDF
Cablejacket
material:
Polyurethane
Cabletype:9‐conductor,shielded
Cablelength:48”(1.2m)
Processmount:ULSS:1”NPT(1”G)
ULSM:1”NPT(1”G)
ULSL:2”NPT(2”G)
Mountgasket: FKM
Classification: Generalpurpose
Compliance:CE,RoHS

4of30MN890570RevA
DIMENSIONS StepThree
SeriesULSLSeriesULSM
SeriesULSS

Rev5MN8905705of30
SAFETYPRECAUTIONSStepFour
AboutthisManual:PLEASEREADTHEENTIREQUICKSTARTPRIORTOINSTALLINGORUSINGTHIS
PRODUCT.ThismanualincludesinformationontheSeriesULSUltrasonicLevelSwitch,controllerand
transmitterfromDwyerInstruments,Inc.Pleaserefertothepartnumberlocatedontheswitchlabeltoverify
theexactmodelconfiguration,whichyouhavepurchased.
User’sResponsibilityforSafety:DwyerInstruments,Incmanufacturesabroadrangeoflevelsensing
technologies.Whileeachofthesesensorsisdesignedtooperateinawidevarietyofapplications,itistheuser’s
responsibilitytoselectasensormodelthatisappropriatefortheapplication,installitproperly,performtestsof
theinstalledsystem,andmaintainallcomponents.Thefailuretodosocouldresultinpropertydamageor
seriousinjury.
ProperInstallationandHandling:Onlyprofessionalstaffshouldinstalland/orrepairthisproduct.Install
thetransmitterwiththeincludedFKMgasketandneverovertightenthetransmitterwithinthefitting.Always
checkforleakspriortosystemstart‐up.
WiringandElectrical:Asupplyvoltageof12to28VDCisusedtopowertheSeriesULS.Electricalwiringofthe
transmittershouldbeperformedinaccordancewithallapplicablenational,state,andlocalcodes.Note:Series
ULSuseslatchingrelays.Whenpowerisremovedtothesensor,therelayswillremainintheirlaststate.Ex:Ifthe
relayisenergized,whenpowerisremoved,therelaywillremaininanenergizedstate.
MaterialCompatibility:TheenclosureismadeofPolycarbonate(PC).Thetransducerismadeof
PolyvinylideneFluoride(PVDF).Makesurethatthemodel,whichyouhaveselected,ischemicallycompatible
withtheapplicationmedia.
Enclosure:Whilethetransmitterhousingisliquid‐resistanttheSeriesULSisnotdesignedtobe
operationalwhenimmersed.Itshouldbemountedinsuchawaythattheenclosureandtransducerdonot
comeintocontactwiththeapplicationmediaundernormaloperationalconditions.
Safety
Installationshouldbedonebyproperlytrainedstaff
Supplyvoltageshouldneverexceedamaximumof28VDC
Makesurethesensorischemicallycompatiblewithyourapplication
Designafail‐safesystemthataccommodatesthepossibilityofsensorand/orpowerfailure
Thissensorshouldnotbeusedinclassifiedhazardousenvironments
MakeaFail‐SafeSystem:Designafail‐safesystemthataccommodatesthepossibilityoftransmitter
and/orpowerfailure.DwyerInstruments,Increcommendstheuseofredundantbackupsystemsandalarms
inadditiontotheprimarysystem.
Flammable,ExplosiveorHazardousApplications:SeriesULSshouldnotbeusedwithinclassified
hazardousenvironments.
Warning:AlwaysusetheFKMgasketwheninstallingtheSeriesULS,andmakesurethatallelectrical
wiringoftheswitchisinaccordancewithapplicablecodes.

6of30MN890570RevA
COMPONENTSStepFive
SeriesULSisofferedindifferentmodels.Dependingonthemodelpurchased,youmayormaynothavebeen
shippedallthecomponentsshownbelow.Youdohowever,needaSeriesULS,USBFobandFKMgasketto
configure,installandoperateSeriesULS.
FKMGasket
oULS‐ACC‐SGK–usedwithULSSseries
oULS‐ACC‐MGK–usedwithULSMseries
oULS‐ACC‐LGK–usedwithULSLseries
USBFob
oPart#ULS‐ACC‐USB
QuickStartGuide

*Outputs
1. 4‐20mA,looppoweredoutput
2. 4SPST60VArelays
P/NMax.RangeDeadBandThreadFob*Outputs
ULSS‐10 4.1’(1.25m)2”(5cm)1”NPT NoFob1,2
ULSS‐11 4.1’(1.25m)2”(5cm)1”NPT FobIncluded1,2
ULSS‐20 4.1’(1.25m)2”(5cm)1”GNoFob1,2
ULSS‐21 4.1’(1.25m)2”(5cm)1”GFobIncluded1,2
ULSM‐10 9.8’(3.0m)4”(10cm)1”NPT NoFob 1,2
ULSM‐11 9.8’(3.0m)4”(10cm)1”NPT FobIncluded1,2
ULSM‐20 9.8’(3.0m)4”(10cm)1”GNoFob 1,2
ULSM‐21 9.8’(3.0m)4”(10cm)1”GFobIncluded1,2
ULSL‐10 18.0’(5.5m)8”(20cm)2”NPT NoFob 1,2
ULSL‐1118.0’(5.5m)8”(20cm)2”NPT FobIncluded1,2
ULSL‐20 18.0’(5.5m)8”(20cm)2”GNoFob 1,2
ULSL‐21 18.0’(5.5m)8”(20cm)2”GFobIncluded1,2

Rev5MN8905707of30
GETTINGSTARTEDStepSix
SeriesULSisconfiguredthroughULSX‐CAL,aPCsoftwareprogram.ULSX‐CALisafreedownloadfromDwyer
Instrument,Inc’swebsite.YoumustdownloadandinstallULSX‐CALpriortopluggingintheUSBFob.Please
gotohttp://www.Dwyer‐Inst.com/software,clickonULSX‐CAL.Pleaseobservethefollowingrequirements
fortheULSX‐CALsoftware:
ULSX‐CALSystemRequirements
Windows(R)2000,Windows(R)XP,Windows
Vista(R),Windows(R)7
32or64‐bitoperatingsystem
1USB2.0port
10mBharddrivespace
256mBRAM
Internetconnection
USBFobInterface:TheSeriesULScommunicateswithULSX‐CALthroughaUSBinterface(p/n:ULS‐ACC‐USB)
calledaFob.BeforepluggingyourFobintoyourcomputer’sUSBport,besurethatyouhaveinstalledULSX‐
CALonyourcomputer.
Connectthered,green,whiteandblackwiresfromSeriesULSintothecorrectterminalsontheFob.Tighten
thescrewsontheterminalsandplugyourFobintotheUSBportofyourcomputer.
Wiringidenticalforallseries–UseonlytheRed,Black,GreenandWhitewires.
ThemaximumcabledistancebetweenthecomputerandSeriesULSis15’(4.6m).Thisonlyapplieswhen
configuringtheSeriesULS.
OnceSeriesULSisconfiguredandpriortoinstallation,isolatethewhiteandgreenwiresfromactivepower
topreventashortoftheconfigurationcircuit.
WhenusingtheFob,donotaddVDCpower.TheFob,whenconnectedtothecomputer,willprovidethe
requiredpowertotheSeriesULS.
Windows(R)isaregisteredtrademarkofMicrosoftCorporation
WindowsVista(R)isaregisteredtrademarkofMicrosoftCorporation

8of30MN890570RevA
ULSX‐CALStepSeven
WithSeriesULSconnectedtoyourcomputer,opentheULSX‐CALsoftwarebyclickingontheULSX‐CALicon.
Followsteps1‐3toconfigurethetransmitter.Click“Help”inthelowerrighthandcornerandopenthehelp
menuofULSX‐CALforadditionalinstructionsonULSX‐CAL.IfyouneedadditionalassistanceusingULSX‐CAL,
pleasecontactaDwyerInstruments,IncApplicationsEngineerat(800)872‐9141.
AboveScreenCaptureisfortheSeriesULSS.

Rev5MN8905709of30
ULSX‐CALCONFIGURATIONStepSeven
ThissectionofULSX‐CALiswhereyouselecttheapplication’sconfigurationsettings.Startfromthetopand
worktothebottom,choosingtheselectionsthatareapplicabletoyourconfiguration.“NotApplicable”will
automaticallyshowwhenaselectiondoesn’tapplytoyourconfigurationsettings,andyoumaymoveon.All
configurationsettingsmustbeselectedorhave“NotApplicable”beforeyoucancontinuetothenextstep.
Note:PressingtheClearScreenbuttonwillresettheconfigurationtableandallowaccesstoallofthefeatures.
NumberofPumps:Thisfeatureallowsyoutoselectthenumberof
pumpsorvalvesusedwithSeriesULS.Thisisthesettingthatactivates
thecontrolcapabilitiesofuptotworelays.Controlrelaysareoften
referredtoaslatchingrelays.
oSwitch/AlarmsOnly–Therelayswillbestandardsinglepoint
relays(Highand/orLowalarms).Relaysarenon‐latching.
o1‐ Pump/Valve–Onerelaywillbeconfiguredasacontrolor
latchingrelay(relaywillhaveastartlevelandaseparatestop
level).Usethissettingtocontrolonepumporvalvefor
automaticfillingoremptyingofatank.
o2‐Pumps/Valves–Tworelaysareconfiguredascontrolor
latchingrelays.Eachrelaywillhaveauniquestartlevelanda
commonstoplevel.Usethissettingtocontroltwopumpsor
valvesforautomaticfillingoremptyingofatank.
o4‐20mATransmitterOnly–Thissettingwilldisengageallofthe
relays.Usethisfunctionifyouarenotusinganyrelaysand
usingonlythe4‐20mAcurrentoutput.
Note:Rightclickonanymenuthatyoumayhavequestionsontoopenthehelpmenu.
Note:Toreset,presstheClearScreenbutton.

10of30MN890570RevA
ULSX‐CALCONFIGURATION(continued)StepSeven
Pump/ValveAction:Thisfeatureallowsyoutoselectifthepumpsor
valveswillbeusedtoautomaticallyfilloremptythetank.For2‐
Pump/Valvemode,bothdevicesmustbethesame(automaticfillor
empty).Youcannotsetonerelayforfillandtheotherforempty.
oEmptiesTank–Willsetrelay(s)toautomaticallyemptyatank.
StartlevelwillbeabovetheStoplevelforeachrelay.
oFillsTank–Willsetrelay(s)toautomaticallyfillatank.Start
levelwillbebelowtheStoplevelforeachrelay.
oNotApplicable–Appearswhenthisfunctionisnotavailable
(suchaswhenSwitch/AlarmsOnlyor4‐20mATransmitters
Onlyareselected).
EmptiesTankFillsTank
(AutoEmpty)(AutoFill)
Note:Rightclickonanymenuthatyoumayhavequestionsontoopenthehelpmenu.
Note:Toreset,presstheClearScreenbutton.

Rev5MN89057011of30
ULSX‐CALCONFIGURATION(continued)StepSeven
Pump/ValveMode:Thisfeatureallowsyoutoselectthemodefora
controlorlatchingrelay.Pump/Valvemodeisnotactivefor
Switch/AlarmsOnlyor4‐20mATransmitterOnly.
oSimplex–Allowsfortherelaytobeusedasanautomaticfillor
empty.Thisisthedefaultandonlyconfigurationwhen1‐
Pump/Valveisselected.
oSimplexusedtoEmptyTank(example)
oLead/Lag–Allowsforthetworelaystohaveuniquestartlevels
andacommonstoplevel.Thefirstrelaywillbeidentifiedas
theleadrelayandthesecondrelayasthelag.Eachtimethe
leadlevelisreached,thefirstrelaywillalwaysstart.Thelag
relaywillonlystartwhenthelaglevelisreached.Allrelayswill
stopatthecommonofflevel.
oLead/LagusedtoEmptyTank(example)
oDuplex‐Allowsforthetworelaystohavetwodifferentstart
levels,acommonstoplevelandwillalternatetherelayswhen
thefirststartlevelisreached.Thetworelayswillalternate
eachtimetheleadlevelisreachedandtheremainingrelaywill
startwhenthelaglevelisreached.Allrelayswillstopatthe
commonofflevel.
oDuplexusedtoEmptyTank(example)
oNotApplicable–Appearswhenthisfunctionisnotavailable
(suchaswhenSwitch/AlarmsOnlyor4‐20mATransmitters
Onlyareselected).
Note:Rightclickonanymenuthatyoumayhavequestionsontoopenthehelpmenu.
Note:Toreset,presstheClearScreenbutton.

12of30MN890570RevA
ULSX‐CALCONFIGURATION(continued)StepSeven
RelayFail‐Safe:Thisfeatureallowsyoutoselectthefail‐safestatefor
therelays.Whenthesensorregainssignal,theoutputcurrentwill
revertbacktothecurrentlevelcondition.
oRelaysOff‐ TherelayswillreverttotheOFFstate.Appears
whenSwitch/AlarmsOnlyisselected.
oRelaysOn‐TherelayswillreverttotheONstate.
AppearswhenSwitch/AlarmsOnlyisselected.
oHoldState‐Therelay(s)willremaininthesamestateasthe
lastechodetected.Whenthesensorregainssignal,therelays
willreverttothelevelwhenthesignalwasregain.
oPump/ValvesOff‐ TherelayswillreverttotheOFFstate.
Appearswhen1‐Pump/Valveor2‐Pumps/Valvesareselected.
oPump/ValvesOn‐ TherelayswillreverttotheONstate.
Appearswhen1‐Pump/Valveor2‐Pumps/Valvesareselected.
oNotApplicable–Appearswhenthisfunctionisnotavailable
(suchaswhenTransmittersOnlyareselected).
Note:Rightclickonanymenuthatyoumayhavequestionsontoopenthehelpmenu.
Note:Toreset,presstheClearScreenbutton.

Rev5MN89057013of30
ULSX‐CALCONFIGURATION(continued)StepSeven
Switch/AlarmConfiguration:Thisfeatureallowsyoutoselect the
operationfortheswitches/alarms(usedasahighorlowalarm).This
settingadjuststhenumberofavailablerelaysbasedupontheprevious
settings.
oNoAlarm–Turnsoffalloftheremainingrelays.
oHighAlarmOptions–Setfrom1to4HighAlarms(1‐High,2‐
High,3‐High,4‐High).
oLowAlarmOptions–Setfrom1to4LowAlarms(1‐Low,2‐
Low,3‐Low,4‐Low).
oCombinationAlarms–SetacombinationofHighandLow
Alarms(1‐Low1‐High,1‐Low2‐High,2‐Low1‐High,2‐Low2‐
High,1‐Low3‐High,3‐Low1‐High).
oNotApplicable–Appearswhenthisfunctionisnotavailable
(suchaswhenTransmittersOnlyisselected).
HighAlarmOptionsLowAlarmsOptionsCombinationAlarms
(4High)(4Low)(2Highand2Low)
Note:Rightclickonanymenuthatyoumayhavequestionsontoopenthehelpmenu.
Note:Toreset,presstheClearScreenbutton.

14of30MN890570RevA
ULSX‐CALCONFIGURATION(continued)StepSeven
SwitchHysteresis/Deadband:Thisfeatureallowsyoutoselecta
hysteresisordeadbandfortheremaininghighand/orlowalarms.
oOptionsforHysteresis/Deadband–NoHysteresis,¼”,½”,1”,
2”,½cm,1cm,2cm,5cmorNotApplicable.
oHighAlarms–Relayactivatesabovesetpoint.Relaywill
deactivatewhenlevelgoesbelowthesetpointplusthevalueof
thehysteresis.
oLowAlarms–Relayactivatesbelowsetpoint.Relaywill
deactivatewhenlevelgoesabovethesetpointplusthevalueof
thehysteresis.
HighAlarmw/HysteresisLowAlarmw/Hysteresis
Note:Rightclickonanymenuthatyoumayhavequestionsontoopenthehelpmenu.
Note:Toreset,presstheClearScreenbutton.

Rev5MN89057015of30
ULSX‐CALCONFIGURATION(continued)StepSeven
LoopFail‐Safe:Thisfeatureallowsyoutoselectthefail‐safecurrent
outputifthesensorfailstodetectareturnsignal.Whenthesensor
regainssignal,theoutputcurrentwillrevertbacktothecurrentlevel
condition.
oHoldLastValue‐Theoutputwillremaininthesamestateas
thelastechodetected.Example:Iftheoutputwas6.7mAjust
priortothelostsignal,thedevicewillcontinuetooutput6.7
mA.Sensorwillindicatethelevelwhensignalwasregain.
oEmpty‐ Theoutputwillreverttothecurrentvalueforan
emptycondition.When“4mAatBottom”isselected,the
sensorwilloutput4mAwhenafail‐safeconditionoccurs.If
“20mAatBottom”isselected,thesensorwilloutput20mA
whenafail‐safeconditionoccurs.
oFull‐ Theoutputwillreverttothecurrentvalueforafull
condition.When“4mAatBottom”isselected,thesensorwill
output20mAwhenafail‐safeconditionoccurs.If“20mAat
Bottom”isselected,thesensorwilloutput4mAwhenafail‐
safeconditionoccurs.
oOverfill(21mA)‐Theoutputcurrentwillgoto21mAwhenthe
returnsignalislost.
oOverfill(22mA)‐Theoutputcurrentwillgoto22mAwhenthe
returnsignalislost.
OutputatEmpty:Thisfeatureallowsyoutoselecttheorientationof
the4to20mAoutput(4to20mAor20to4mA).Choosewhich
outputsettingbestfitstheapplication.Typicalinstallationsareset
with4mAatBottom.Thiswillnotaffecttheperformanceofthe
sensorotherthantheoutputoftheSeriesULS.ULSX‐CAL’sfactory
defaultis4mAatbottomand20mAattop.Whenconnectingyour
sensortoadisplay,youmustaccountforyouroutputsettings.
o4mAatBottom‐Theoutputcurrentwillbe4mAwhenthe
sensormeasuresanemptytankand20mAwhenthesensor
measuresafulltank.
o20mAatBottom‐Theoutputcurrentwillbe20mAwhenthe
sensormeasuresanemptytankand4mAwhenthesensor
measuresafulltank.
Note:Rightclickonanymenuthatyoumayhavequestionsontoopenthehelpmenu.
Note:Toreset,presstheClearScreenbutton.

16of30MN890570RevA
ULSX‐CALTANKLEVELS/WRITETOUNITStepSeven
ULSX‐CAL‐TankLevels:ThissectionofULSX‐CALiswhereyouenterapplicationmeasurementvalues.This
appliestoallversionsoftheSeriesULS.YoumustentertheSensorHeightandFillHeightvalues.
FortheSeriesULSS,ULSMandULSL,theSensorHeightandFillHeightvaluesdeterminethe
operationalrangeforthe4‐20mAoutput.
SensorHeight: Distancefrom
thebottomofthetanktothe
bottomofthetransducer.
FillHeight:Distancefromthe
bottomofthetanktothe
maximumliquidheight.
ULSX‐CAL‐RelayValues:(SeriesULSS,ULSMandULSLonly):ThissectionofULSX‐CALiswhereyouenter
theoperationalvaluesforrelays.Youmustentervalueswithinallofthefieldsshown.Thevaluefieldsshown
arebasedupontheconfigurationoftheSeriesULS.Allvaluesmustbeintheunitsofoperationselected
aboveandarebaseduponunitsofliquid.AllrelayvaluesmustbegreaterthanLiquidEmpty(0)andlessthan
LiquidFull(FillHeight).
Example: Thissampleshows4
HighLevelAlarms.Asthe
levelincreasesfromthe
bottom–up,eachalarmwill
activateat4”increments.
Example:Thissampleshowsa
2‐PumpLead/Lagoperation
withaHighandLowalarm.
Thepumpswillautomatically
emptythetankandthe
alarmswillactivateifthelevel
getstoohighorlow.

Rev5MN89057017of30
ULSX‐CAL‐WRITETOUNITStepSeven
Afteryouhaveenteredconfigurationsandtank
values,click“WritetoUnit”andsendthe
configurationtoyourSeriesULS.NowuseULSX‐CAL’s
filemanagementfeaturestosaveyourconfiguration
byclicking“SaveConfigFile”andprintyourwiring
diagrambyclicking“WiringDiagram.”
WritetoUnit
Wiringdiagram
SaveConfigFile
WiringDiagram‐Sample
DiagramwillchangebasedupontheconfigurationoftheSeriesULS,
useULSX‐CALtoviewappropriatewiringdiagram.
WiringSeriesULS:OnceSeriesULShasbeeninstalled,followtheWiringDiagramprovidedbytheULSX‐CAL
software.Atypicalwiringdiagramisshownabove.DwyerInstruments,Increcommendsusingaqualified
licensedelectriciantowireSeriesULSandyourapplication’scomponents.
ConfigureyourSeriesULSwithULSX‐CALandusethewiringdiagrambuttontoviewtheappropriate
diagram.Eachconfigurationwillhaveitsownuniquediagram.Thediagramaboveisonlyasample
andshouldnotbeusedasawiringdiagram.
Alwaysusestepperrelaysbetweenthesensorandexternalloads.ForDCcircuitsuseacatchdiode
suchas1N4148,shownonthewiringdiagramshownaboveandsuppliedbyULSX‐CAL.
OnceSeriesULSisconfigured,isolatethewhiteandgreenwiresfromactivepowertopreventa
shortoftheconfigurationcircuit.

18of30MN890570RevA
WIRINGStepEight
WireConnections:
Red&Black:RedandBlackleadsareforconnectiontoa12‐28VDCpowersupplyortoa4‐20mAlooppower
source(SeriesULSS,ULSM&ULSLonly).Theredandblackwirescanbeextendedupto1,000feetusinga22
gaugeorlargerwire,howeverdonotextendthegreenandwhitewires.
White&Green:WhiteandGreenleadsarereservedforusewithULSX‐CALandshouldnotbeconnected
duringusageintheapplication.ThesewiresshouldnotbeconnectedtoULSX‐CALwhilepowerissupplied
fromanysourceotherthantheULS‐ACC‐USBFob.Themaximumcabledistancebetweenthecomputerand
SeriesULSis15’.
Neverallowthewhiteorgreenwirestotouchanypowersupply.
Blue,Orange,Yellow,Purple&Brown:Blue,Orange,Yellow&Purplewiresaretherelaycontacts(normally
open)fromeachoftherelaysrespectively.TheBrownwireisthecommonforalltherelays.Relayselectionis
determinedbytheconfigurationinULSX‐CAL.Note:SeriesULSuseslatchingrelays.Whenpowerisremovedto
thesensor,therelayswillremainintheirlaststate.Ex:Iftherelayisenergized,whenpowerisremoved,the
relaywillremaininanenergizedstate.
Generalnotesforelectricalconnections,usageandsafety:
Wherepersonalsafetyorsignificantpropertydamagecanoccurduetoaspill,theinstallationmust
havearedundantbackupsafetysysteminstalled.
Wiringshouldalwaysbecompletedbyalicensedelectrician.
Supplyvoltageshouldneverexceed28VDC.
Alwaysusestepperrelaysbetweenthesensorandexternalloads.ForDCcircuitsuseacatchdiode
suchas1N4148,shownonpreviouspage.
Protectthesensorfromexcessiveelectricalspikesbyisolatingthepower,wheneverpossible.
Thesensormaterialsmustbechemicallycompatiblewiththeliquidstobemeasured.
Designafail‐safesystemforpossiblesensorand/orpowerfailure.
NeverusethesensorinenvironmentsclassifiedasHazardous.

Rev5MN89057019of30
WIRINGStepEight
SwitchingInductiveLoads:Theuseofsuppressors(snubbers)isstronglyrecommendedwhenswitching
inductiveloadstopreventdisruptingthemicroprocessor’soperation.Thesuppressorsalsoprolongthelifeof
therelaycontacts.SuppressioncanbeobtainedwithacatchdiodeforDCcircuitsandaresistor‐capacitor(RC)
forACcircuits.
CatchDiode
Alwaysusestepperrelaysbetweenthesensorandexternalloads.
ForDCcircuitsuseacatchdiodesuchas1N4148,shownonleft.
RefertothefollowingcircuitsforRCnetworkassemblyandinstallation:
ChooseRandCasfollows:
R:0.5to1Ohmsforeachvoltacrossthecontacts
C:0.5to1μFforeachampthroughclosedcontacts
Notes:
1. Usecapacitorsratedfor250VAC.
2. RCnetworksmayaffectloadreleasetimeofsolenoidloads.Check
toconfirmproperoperation.
3. InstalltheRCnetworkatthemetersrelayscrewterminals.AnRC
networkmayalsobeinstalledacrosstheload.Experimentforbest
results.
VoltageOutput:SeriesULScanbeusedasa0to5or0to10VDCoutputdevice.Aresistorwillneedtobe
addedtothecircuittoenableavoltageoutput(refertothewiringdiagrambelow).
0‐5VDCoutput
oAdda250Ohmresistor
oActualoutputwillbe0.8to5VDC
0‐10VDCoutput
oAdda500Ohmresistor
oActualoutputwillbe2to10VDC
WhenusingULSX‐CAL,underNumberofPumps,select4‐20mATransmitterOnlytosimplifytheconfiguration
inULSX‐CAL.

20of30MN890570RevA
INSTALLATIONStepNine
TheSeriesULSshouldalwaysbemountedperpendiculartotheliquidsurfaceandinstalledusingtheprovided
FKMmountinggasket.Makesurethatthefittingandtransmitterthreadsarenotdamagedorworn.Always
hand‐tightenthetransmitterwithinthefitting.Performaninstalledleaktestundernormalprocessconditions
priortosystemstartup.Note:ThepreferredmountingfittingfortheSeriesULSS&ULSMistheULS‐ACC‐121
(2”threadx1”thread)reducerbushing.
MountingGuide
1. Donotmountatanangle
2. Liquidshouldneverenterthedeadband
3. SideWall:
a. Mountatleast2”fromthesidewall
b. ForSeriesULSL‐mountatleast3”fromthesidewall
4. Donotmountwhereobstacleswillintrudeonsensor’sbeamwidth
a. SeeSpecifications,StepTwo
5. Donotmountinavacuum
6. Avoidmountinginthecenterofadometoptank.
7. Inconebottomtank,positionthesensoroverthedeepestpartofthetank.
Donotinstallat
anglerelativetothe
liquid.
Donotinstallwithin
2”oftanksidewall.
(3”forSeriesULSL)
Donotinstallwith
objectsinthebeam.
Donotinstallin
applicationswith
vacuum.
Installationinexistingfittings:IftheexistingfittingislargerthanthethreadsoftheSeriesULS,selecta
reducerbushingsuchastheULS‐ACC‐121(2”threadx1”thread)orULS‐ACC‐131(3”threadx2”thread).
MetalTanks(SeriesULSS&ULSM):DwyerInstruments,Incultrasonictransmittershavebeenoptimizedfor
useinnon‐metallicfittings.
1. Forbestperformance,avoidtheuseofmetallicfittings.
a. Useaplastic2”x1”reducerbushing,suchastheULS‐ACC‐121oraplastic1”flange,suchasthe
ULS‐ACC‐312formetallictanks.
2. Whileinstallationsdirectlyintoa1”metalfittingarenotrecommended,acceptableresultsmaybe
obtainedifthe1”fittingisahalfcouplinginformandtheouterdiameterofthecouplingistightly
wrappedinvinyltapetodampenvibrations.