Endress+Hauser Proline Prosonic Flow W 400 - Potential Equalization; Special Connection Instructions; Connection Examples

Electrical connection Proline Prosonic Flow W 400 HART
50 Endress+Hauser
3.
L
WARNING
Housing degree of protection may be voided due to insufficient sealing of the
housing.
‣
Screw in the screw without using any lubricant.
Tighten the 4 fixing screws on the housing cover.
7.3.3 Potential equalization
Requirements
For potential equalization:
• Pay attention to in-house grounding concepts
• Take account of operating conditions like the pipe material and grounding
• Connect the sensor and transmitter to the same electric potential
5)
• Use a ground cable with a minimum cross-section of 6 mm
2
(10 AWG) and a cable lug
for potential equalization connections
7.4 Special connection instructions
7.4.1 Connection examples
Current output 4 to 20 mA HART
4
4...20 mA
5
2
1
3
6
A0029055
 39 Connection example for 4 to 20 mA HART current output (active)
1 Automation system with current input (e.g. PLC)
2 Ground cable shield at one end. The cable shield must be grounded at both ends to comply with EMC
requirements; observe cable specifications →  159
3 Connection for HART operating devices →  74
4 Resistor for HART communication (≥ 250 Ω): observe maximum load →  155
5 Analog display unit: observe maximum load →  155
6 Transmitter
5)