Endress+Hauser Proline Promag W 500 - Potential Equalization

Proline Promag W 500
Endress+Hauser 41
Status input
1
2
3
A0028764
 19 Connection example for status input
1 Automation system with status output (e.g. PLC)
2 Power supply
3 Transmitter
Potential equalization Requirements
Please consider the following to ensure correct measurement:
• Same electrical potential for the fluid and sensor
• Company-internal grounding concepts
• Pipe material and grounding
Connection example, standard scenario
Metal, grounded pipe
A0016315
 20 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 least 6 mm
2
(0.0093 in
2
)
DN 300≤ DN 350≥
A0029338
 21 Potential equalization via ground terminal and pipe flanges