User Manual

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.