Dwyer Model ULSM User manual

L‐ULS

RevA MN890570 1of30

SeriesULS

SmallTankUltrasonicTransmitter,SwitchandController

SeriesULSS,ULSM,ULSLManual



DwyerInstrumentsInc.

102IndianaHwy.212

(P.O.Box373)

MichiganCity,IN46360(46361)USA

www.Dwyer‐Inst.com



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energiz edstat e.

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

o ULS‐ACC‐SGK–usedwithULSSseries

o ULS‐ACC‐MGK–usedwithULSMseries

o ULS‐ACC‐LGK–usedwithULSLseries

 USBFob

o Part#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”G NoFob 1,2

ULSS‐21 4.1’(1.25m) 2”(5cm) 1”G Fob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”G NoFob 1,2

ULSM‐21 9.8’(3.0m) 4”(10cm) 1”G Fob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”G NoFob 1,2

ULSL‐21 18.0’(5.5m) 8”(20cm) 2”G Fob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.

o Switch/Alarms Only – The relays will be standard single point

relays(Highand/orLowalarms).Relaysarenon‐latching.

o 1‐ 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.

o 2‐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.

o 4‐20mA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.

o EmptiesTank–  Willsetrelay(s)toautomaticallyemptyatank.

StartlevelwillbeabovetheStoplevelforeachrelay.

o Fills Tank – Will set relay(s) to automatically fill a tank.Start

levelwillbebelowtheStoplevelforeachrelay.

o Not 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.

o Simplex–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.

o SimplexusedtoEmptyTank(example)



o Lead/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.

o Lead/LagusedtoEmptyTank(example)



o Duplex‐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.

o DuplexusedtoEmptyTank(example)



o Not 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.

o Relays Off ‐ The relays will revert to the OFF state.Appears

whenSwitch/AlarmsOnlyisselected.

o RelaysOn‐TherelayswillreverttotheONstate.

AppearswhenSwitch/AlarmsOnlyisselected.

o Hold 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.

o Pump/Valves Off ‐ The relays will revert to the OFF state.

Appearswhen1‐Pump/Valveor2‐Pumps/Valvesareselected.

o Pump/Valves On ‐ The relays will revert to the ON state.

Appearswhen1‐Pump/Valveor2‐Pumps/Valvesareselected.

o Not 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.

o NoAlarm–Turnsoffalloftheremainingrelays.

o High Alarm Options – Set from 1 to 4 High Alarms (1‐High, 2‐

High,3‐High,4‐High).

o Low Alarm Options – Set from 1 to 4 Low Alarms (1‐Low, 2‐

Low,3‐Low,4‐Low).

o Combination 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).

o Not 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.

o Optionsfor Hysteresis/Dead band–No Hysteresis,¼”,½”,1”,

2”,½cm,1cm,2cm,5cmorNotApplicable.

o High Alarms – Relay activates above set point.Relay will

deactivatewhenlevelgoesbelowthesetpointplusthevalueof

thehysteresis.

o Low 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.

o Hold 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.

o Empty‐ 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.

o Full ‐ 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.

o Overfill(21mA)‐Theoutputcurrentwillgoto21mAwhenthe

returnsignalislost.

o Overfill(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.

o 4 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. 

o 20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configu r ation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st at e. 

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

o Adda250Ohmresistor

o Actualoutputwillbe0.8to5VDC

 0‐10VDCoutput

o Adda500Ohmresistor

o Actual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 f ittings: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.

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.

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Dwyer Model ULSM, Model ULSL, Model ULSS, ULSL, ULSM, ULSS User manual

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