User Manual

2of16 MN301031 RevB
INTRODUCTION/TABLEOFCONTENTS StepOne
The DeltaSpan™ LD31 Series General Purpose Clean Water & Oil or LD32 Series General Purpose Pump Lift
Station pressure level transmitters are manufactured for years of trouble free service in the harshest
applications.Thepressuretransmittermeasurestheheightofliquidabovethepositioninthetankreferenced
to atmospheric pressure.The transmitter consists of a piezoresistive sensing element, encased in 316 SS
housing.TheLD31seriesfeaturesabulletnosedesignprotectsthediaphragmfromdamage.
Superiorlightningandsurgeprotectionutilizingdualarrestortechnology,groundedtocase,eliminatingboth
power supply surges and lightning ground strike transients.Large diameter 316 SS diaphragm seal is non‐
clogginganddamageresistanttofloatingsolids.
Thetransmitter isequippedwitha270‐poundtensilestrengthshieldedandventedcable.Ventilationtubein
the cable automatically compensates for changes in atmospheric pressure above the tank.The vent is
protected with a maintenance free filter eliminating particulate or water droplets from entering the
transducer.Forextraprotectionagainsthighhumidityenvironments,FlowlineofferstheLD90‐3000desiccant
filterthatcanbeattachedtotheventtube.
 Excellentchemicalcompatibilitywith316construction
 Lightningandsurgeprotectiononallmodels
 Maintenancefreeventfilter
 LD31seriesfeaturesslimdesignfortightapplications
 LD32seriesfeatureslargediameter,non‐clogging,damageresistant,316SSdiaphragmseal
TableofContents
 Specification:..............................................................................................................................................3
 Dimensions:................................................................................................................................................4
 SafetyPrecautions:....................................................................................................................................5
 Components:..............................................................................................................................................6
 GettingStarted:..........................................................................................................................................7
HowtoconvertPressureintoLiquidHeight?................................................................................7
HowdoesSpecificGravityaffectpressuretransmitters?.............................................................8
Howtoselectthecorrectpressuretransmitter?..........................................................................9
Howtoconfigureapanelmeterwhenapressuretransmitterisused?.....................................10
 ElectricalInstallation:...............................................................................................................................11
WireLength:.................................................................................................................................11
 Wiring:..................................................................................................................................................12‐13
 Installation:..............................................................................................................................................14
Interference:................................................................................................................................14
Termination:.................................................................................................................................14
 Maintenance:...........................................................................................................................................15
Testingthetransmitter:...............................................................................................................15
 Warranty:.................................................................................................................................................16
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