Instruction Manual

RevB MN301030 7of14
GETTINGSTARTED StepSix
TheLD30serieswillbeinstallednearthebottomofthevessel.Theswitchcanbeinstalledthroughtheside
wall or through the bottom.Pleasenote that thephysical location of the level transmitter will indicatethe
lowestlevelofmeasurementwithinthetank.Forexample:mountingthetransmitter1footfromthebottom
ofthetank,thenthelowestreadingofliquidwillbe1footfromthebottom.
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Note:WheninstallingtheLD30series,designaninstallationmethodwheretheunitcan beremovedwithout
havingtoremovethefluidfromthevessel.Theuseofvalvesbetweenthetransmitterandthevesselcanallow
transmitterremovalwithoutdrainingthefluid.
HowtoconvertPressureintoLiquidHeight?
PressuretransmittersarealldefinedbythepressurerangeandnotbyLiquidHeight.Toconvertpressureto
LiquidHeight,usethefollowingratio:
1psi=2.31feetofwater
or
1psi=0.704metersofwater
 Therefore,a15psitransmitterwillhaveaLiquidHeight=
34.65feet(10.56m):
15psix2.31’/psi=34.65’
or
15psix0.704m/psi=10.56m
Withtheabove ratio,youcanalwaysfindtheLiquidHeightor
watercolumn(wc)ofanypressuretransmitter.
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