Instruction Manual

4of14 MN301030 RevB
DIMENSIONS StepThree
Technology:Apressuretransmitterisinstallednearoronthebottomofthetankbywayofa¼”NPTthread.
Astainlesssteelpressurediaphragmwithinthepressuretransmitterisexposedononesidetotheapplication
fluid.The amount of pressure applied to the sensing surface will slightly deflect the diaphragm.The
deflectionofthe diaphragmismeasuredbyabuilt‐inmicroprocessorthatprovidesgreaterlinearitycorrection
overcommonthermalcompensationmethods.A4‐20mAcurrentsignalproportionaltheheightoftheliquid
orthepressureofthegasisgeneratedfromthemicroprocessor.
CableSeries(LD30‐S_01)
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ConduitSeries(LD30‐S_11)
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MaterialCompatibility:
 TheLD30seriesismadeof316StainlessSteel(316SS),316LStainlessSteel(316LSS).
 TheCableVersion(LD30‐S_01)isprovidedwith3’(0.91m)ofcable.
 The Conduit Version (LD30‐S_11) is provided with a junction box (includinga terminal strip) and a ½’
NPTconduit.
 Thetotallengththesignalcantransmitterisbaseduponthefollowingformula:
o RLmax=(Vsup–13V)/0.02A,
 RLmaxisthetotalresistanceincludingtheloadandthecablelength.
Makesurethattheswitchiscompatiblewiththeapplicationliquids.Todeterminethechemicalcompatibility
betweenthesensoranditsapplicationliquids,refertotheCompassCorrosionGuide,availablefromCompass
Publications(858‐589‐9636).