User Manual

RevB MN301031 15of16
MAINTENANCE StepTen
After final installation of the pressure transmitter  and its companion receiver, no routine maintenance is
required.A periodic check of system calibration is suggested.The pressure transmitters are not field
repairable and should be returned if repair is needed (field repair should not be attempted and may void
warranty).Besuretoincludea briefdescriptionoftheproblemplusanyrelevantapplicationnotes.Contact
customerservicetoreceiveareturngoodsauthorizationnumberbeforeshipping.
Maintenanceshouldconsistofinspectiontosee thatthetransmitterisfreefromdebrisandnotcoatedwith
anysubstance,whichwouldpreventliquidfromfreelyenteringandleavingthetransmitter.Ifthisoccurs,the
transmittershouldbecleaned.
Testingthetransmitter:
 First,verifythatthesensoriswiredcorrectly.
 Next,checkifthepowersupplyisprovidingtherequiredpower.
 Finallyconfirmthattheloopresistanceisnotexceedingthesensor’sspecification.
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If transmitter is not functioning properly, isolate the transmitter from the system andwire as shown below.
Besuretoremovethesensorfromtheclassifiedareawhenperformingthistest.Multimetershouldread4
mAwiththetransmitteroutofliquid.
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