Instruction Manual

12of14 MN301030 RevB
INSTALLATION StepNine
The LD30 series is designed to operate with only the installation thread being exposed to the fluid.Avoid
installing the level transmitter along the bottom of the tank as materials such as sludge will build up and
coat/covertheport.
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1. Location:Selectalocationwherethetemperatureofthetransmitterwillbebetween0and175°F(‐18to
79°C). Distance from the receiver is limited only by total loop resistance. The tubing or piping supplying 
pressure to the unit can be practically any length required but long lengths will increase response time
slightly.
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. PressureConnection:Useasmall amountofplumber’stape or othersuitable  sealants toprevent leaks.
Besurethepressurepassageinsidetheportisnotblocked.
4. Electrical Connections:Wire Length‐The maximum length of wire connecting the transmitter and
receiverisafunctionofwiresizeandreceiverresistance.Wiringshouldnotcontributemorethan10%of
thereceiverresistancetototalloopresistance.Forextremelylongruns(over1000feet),choosereceivers
withhigherresistancetominimizethesizeandcostofconnectingleads.Wherewiringlengthisunder100
feet,wireassmallas22AWGcanbeused.
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