Endress+Hauser Proline Promag W 400 - Page 45

Proline Promag W 400 EtherNet/IP Electrical connection
Endress+Hauser 45
Plastic pipe or pipe with insulating liner
This connection method also applies in situations where:
• The customary potential equalization is not used
• Equalizing currents are present
Ground cable
Copper wire, at least6 mm
2
(0.0093 in
2
)
A0016318
 18 Potential equalization via ground terminal and ground disks
1. Connect the ground disks to the ground terminal via the ground cable.
2. Connect the ground disks to ground potential.
For remote device versions, the ground terminal in the example always refers to the
sensor and not to the transmitter.
Pipe with a cathodic protection unit
This connection method is only used if the following two conditions are met:
• Metal pipe without liner or pipe with electrically conductive liner
• Cathodic protection is integrated in the personal protection equipment
Ground cable
Copper wire, at least6 mm
2
(0.0093 in
2
)
+
–
A0016319
Prerequisite: The sensor is installed in the pipe in a way that provides electrical insulation.
1. Connect the two flanges of the pipe to one another via a ground cable.
2. Guide the shield of the signal lines through a capacitor.
3. Connect the measuring device to the power supply such that it is floating in relation
to the protective ground (isolation transformer).
For remote device versions, the ground terminal in the example always refers to the
sensor and not to the transmitter.