Endress+Hauser Proline Promag L 400 - Page 36

Electrical connection Proline Promag L 400
36 Endress+Hauser
Connection examples for standard situations
Metal, grounded pipe
A0016315
 12 Potential equalization via measuring tube
Connection example in special situations
Unlined and ungrounded metal pipe
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
)
DN 300≤ DN 350≥
A0016317
 13 Potential equalization via ground terminal and pipe flanges
For remote device versions, the ground terminal in the example always refers to the
sensor and not to the transmitter.
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