Emerson 8712E Process Grounding Options Type of Pipe, Lining, Straps, Electrode Protectors

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Quick Installation Guide

Rosemount 8712 / 8700 Series

00825-0100-4664, Rev BB January 2013

STEP 5: GROUNDING

Use Table 6 to determine which process grounding option to follow for proper installation. The sensor case should be earth grounded in accordance with national and local electrical codes. Failure to do so may impair the protection provided by the equipment.

Table 6. Process Grounding Installation

		Process Grounding Options
Type of Pipe	Grounding		Grounding	Grounding	Lining
Type of Pipe	Straps		Rings	Electrode	Protectors
Conductive	See Figure 10		Not Required	Not Required	See Figure 11
Unlined Pipe
Conductive Lined	Insufficient		See Figure 11	See Figure 10	See Figure 11
Pipe	Grounding
Non-Conductive	Insufficient		See Figure 12	See Figure 13	See Figure 12
Pipe	Grounding

Figure 10. Grounding Straps or Grounding Electrode in Lined Pipe

Figure 11. Grounding with Grounding Rings or Lining Protectors

Grounding Rings or Lining

Protectors

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Contents Quick Installation Guide Management Asia Pacific Private LimitedPRE-INSTALLATION Mechanical ConsiderationsDimensions are in inches millimeters 10912.02 305Installation Procedures Identify Options and ConfigurationsHardware Jumpers/Switches Environmental ConsiderationsHandling Electrical ConsiderationsMounting Upstream/Downstream PipingFlow Direction Sensor OrientationFlow Installation Flanged SensorsGaskets Flange BoltsCode Size ClassPound-feet Newton PTFE/ETFE liner PN10 SizeNewton Code Meter Polyurethane, Linatex, Adiprene and Neoprene Liners Size Alignment Wafer SensorsNominal Sensor Size Rosemount Alignment Spacer Table Line Size Dash No Alignment and Bolting Sanitary SensorsPound-feet Newton-meter Grounding Process Grounding Options Type of PipeLining StrapsGrounding with Grounding Electrode Wiring Power OutputsCoil Drive and Electrode Cables Power Outputs Conduit Ports and ConnectionsTransmitter to Sensor Wiring Remote Mount Cable Requirements and PreparationWiring the Transmitter to the Sensor Transmitter Terminal Sensor Terminal Wire Gauge Wire ColorDescription Part NumberRemote Mount Wiring Diagrams Connect the 4-20 mA Analog Signal Internal Power SourceExternal Power Source Cabling considerationsPowering the Transmitter Supply Wire RequirementsInstallation Category DisconnectsAC Ground or DC Ground Transmitter Power Cable 8712E Power SupplyFuse Basic Setup Basic Setup Local Operator InterfaceFunction Fast Keys Process Variables PV ReviewProduct Certifications Approved Manufacturing LocationsEuropean Directive Information International CertificatesEuropean Certifications N1 Atex Type n Special Conditions for Safe UseInternational Certifications N7 IECEx Type nSensor Approval Information Rosemount 8705 and 8711 Sensors Meter Size Inches Maximum Ambient TemperatureMaximum Process EC Declaration of Conformity Schedule