Manual

14of16 MN301035 RevB
INSTALLATION StepNine
The LD34 / LD35 series are designed to operate while submerged in the  actual
applicationliquid.Avoidinstallingtheleveltransmitteralongthebottomofthetankas
materialssuchassludgewillbuildupandcoat/coverthetransmitter.Thisalsoincludes
anydebristhatwillsettlealongthebottomofthetank.Intheseapplications,itisbest
tosuspendthetransmitterabovethehighestlevelofsludge/debristhatwilloccur.
1. Location:Selectalocationwherethetemperatureofthetransmitterwillbe
between0and176°F(‐18to80°C).Distancefromthereceiverislimitedonlyby
totalloopresistance.
2. Position: The  transmitter is not position sensitive. However all standard models are originally
calibrated with the  unit in a position with the pressure connection downward. Although they can be
used at other angles, for best accuracy it is recommended that units be installed in the position
calibrated
atthefactory.
3. Mounting: The transmitter can be mounted via several methods.It can be suspended from the
electrical cable, or it can be placed resting on the bottom of the tank in either horizontal or vertical
orientation.
Interference:TheDeltaSpan™isdesignedtooperateunderthesurfaceoftheliquidin
thetank.Avoidinstallationswhereothertankrequirementswillcausethetransmitter
tomoveorswing.Forexample:amixerbladecouldcausetheleveltransmittertowhip
aroundwithinthetank.Analternativewouldbetomovethetransmittertoamore
stablesectionofthetank
ortoinstalltheLD34/LD35seriesinsideastillwell/droptube.
Thestillwell/droppipewillminimizetheeffectscreatedbythemixer.
Termination:ThecablefortheDeltaSpan™istypicallyterminatedatajunction box
locatedontopofthetank.Sincetheventtubeiscontainedwithinthecable,the
pressurewithinthejunctionboxmustalwaysbethesameasthereference(typically
atmospheric)pressurefortheliquid.Theinsideofthejunctionboxmust beclean,dryandfreeofmoisture.
Addtheoptionalpressurefitting(LD90‐_001)tocompletethepackage.TheLD90‐_001
featuresa2”NPTthreadformountingandaliquidtightconnectortosealthecable
interface.
Note:Use caution whensealingthe cable atthe topof the tank.The ventilationtube
must be open and free to allow air to flow back to the pressure diaphragm.Avoid
blocking the ventilation
 tube by compressing the  cable.Always keep the cable
termination clean, dry and free of moisture and prevent liquid from entering the vent
tube.
Note:A vent Filteris provided on the endof the venttube.If the application  requires
theventtubeto becuttolength,thenremovetheventfilterandplaceontheendofthenewendofthevent
tube.
Note:For  extra protectionagainst highhumidityenvironments,FlowlineofferstheLD90‐3000desiccantfilter
thatcanbeattachedtotheventtube.
 