Proline Promag W 500
42 Endress+Hauser
Note the following when installing:
• Connect both sensor flanges to the pipe flange via a ground cable and ground them.
• Connect the connection housing of the transmitter or sensor to ground potential by means of the
ground terminal provided for the purpose. To mount the ground cable:
– If DN ≤ 300 (12"): Mount the ground cable directly on the conductive flange coating of the
sensor with the flange screws.
– If DN ≥ 350 (14"): Mount the ground cable directly on the metal transport bracket.
You can order the necessary ground cable from Endress+Hauser: → 110.
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 least 6 mm
2
(0.0093 in
2
)
A0029339
22 Potential equalization via ground terminal and ground disks
Note the following when installing:
The ground disks must be connected to the ground terminal via the ground cable and be connected
to ground potential.
The ground cable and ground disks can be ordered from Endress+Hauser .
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 least 6 mm
2
(0.0093 in
2
)
A0030377
1 Connection of the two flanges of the pipe via a ground cable
2 Signal line shielding via a capacitor
3 Measuring device connected to power supply such that it is floating in relation to the protective ground
(isolation transformer)
Note the following when installing:
The sensor is installed in the pipe in a way that provides electrical insulation.
You can order the necessary ground cable from Endress+Hauser: → 110.
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