User Manual

Rev5 MN890570 29of30
TROUBLESHOOTING StepTwelve
PROBLEM SOLUTION
Transmitterindicatesa
currentof0mA
Checkthewiringforanopencircuit.Anopencircuitisthemost
commonissuewitha0mAsignal.
Transmitterjumpstoa
currentreadingbetween
19and20mA
Check the installation of the transmitter.Bad installation
fittings will cause falsesignals near thetop of the tank, which
typicallytranslatestoasignalbetween19and20mA.Alsolook
forinterferencejustbelowthetransmitter.Ifthetransmitteris
installedinametalfitting,switchtoaplasticfitting.
Transmitterindicatesa
currentover23mA
Immediatelycheckthewiringforashortcircuit.TheSeriesULS
iscurrentlimitedto22mA.Anythingabove23mAindicatesa
shortcircuit.
Transmitteralwaysjumps
totheLOSTcondition
Check the dimensional configuration (Height and Fill‐H) of the
SeriesULS.MakesurethattheFill‐Hsettingcorrespondstothe
full level of liquid (from the bottom up) and not the distance
fromthetransmittertotheliquid(topdown).
Outputoftransmitteris
oppositeofthelevelof
liquid
ChecktheOutputatEmptySetting.
NoUnitDetectedinULSX‐
CAL
ULSX‐CAL cannot detect a Series ULS connected to the
computer.
 CheckthattheFobisconnectedtotheUSBport.
 Checkthatallfourwires(Red,Black,WhiteandGreen)are
securelyattachedtotheFob.
 Check in Device Manager that drivers are present under
UniversalSerialBuscontrollers.
Interneterror.Theserver
nameoraddresscouldnot
beresolved.
ThisisawarningindicatingthecomputerconfiguringSeriesULS
isnotconnectedtotheinternet.ClickOKtoco ntinue.Dwyer
Instruments,Increcommendsbeingconnectingtotheinternet
forallconfigurations. Notbeingconnectedtotheinternetwill
not
preventtheSeriesULSfrombeingconfigured.
Cannotaccesssomeofthe
featuresinConfiguration
As choices are made  in Configuration, ULSX‐CAL will begin to
eliminate functions that are no longer active.To reset
Configurationorgetaccesstoallthefeatures,clickontheClear
Screenbutton.
Relaycloses,butdoesnot
openagain
Aninductivekickmaybeholdingtherelayclosed.Ifswitching
24 VDC, make sure a diode has been installed to act as a
snubber(seeStepEight).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.
Relaychattersonandoff
repeatedly
Most likely the turbulence in the tank is causing the chatter.
IncreasetheHysteresissettingtocorrect.
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