ProlineйPromagйDй400йHART
Electricalйconnection
Hauser
39
3. Connectйtheйconnectionйhousingйofйtheйtransmitterйorйsensorйtoйgroundйpotentialйby
meansйofйtheйgroundйterminalйprovidedйforйtheйpurpose.
Forйremoteйdeviceйversions,йtheйgroundйterminalйinйtheйexampleйalwaysйrefersйtoйthe
sensorйandй
not
йtoйtheйtransmitter.
Pipe with a cathodic protection unit
Thisйconnectionйmethodйisйonlyйusedйifйtheйfollowingйtwoйconditionsйareйmet:
• Metalйpipeйwithoutйlinerйorйpipeйwithйelectricallyйconductiveйliner
• Cathodicйprotectionйisйintegratedйinйtheйpersonalйprotectionйequipment
Ground cable
Copperйwire,йatйleast6йmm
2
йс0.0093йin
2
)
+
–
ййA0017518
Prerequisite:йTheйsensorйisйinstalledйinйtheйpipeйinйaйwayйthatйprovidesйelectricalйinsulation.
1. Connectйtheйtwoйflangesйofйtheйpipeйtoйoneйanotherйviaйaйgroundйcable.
2. Guideйtheйshieldйofйtheйsignalйlinesйthroughйaйcapacitor.
3. Connectйtheйmeasuringйdeviceйtoйtheйpowerйsupplyйsuchйthatйitйisйfloatingйinйrelation
toйtheйprotectiveйgroundйсisolationйtransformer).
Forйremoteйdeviceйversions,йtheйgroundйterminalйinйtheйexampleйalwaysйrefersйtoйthe
sensorйandй
not
йtoйtheйtransmitter.
Summary of Contents for Proline Promag D 400 HART
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