Proline Promag 50
ATEX II3G
0
Hauser
23
Potential equalization
• The transmitter (compact and remote version) must be safely integrated into the potential equalization via
the screw terminal on the outside of the transmitter housing. Alternatively, the transmitter of the compact
version as of serial number 4Axxxxxx000 can be integrated into the potential equalization via the pipeline
as long as the pipeline provides a ground connection conforming to regulations.
• When using the remote version, the connection housing of the sensor must be grounded via the external
screw terminal. Alternatively, the sensor can be integrated into the potential equalization via the pipeline
as long as the pipeline provides a ground connection conforming to regulations.
!
Note!
Further information about potential equalization, screening and grounding can be found in the associated
Operating Instructions.
Potential equalization for fieldbus versions, when both sides of the screen are grounded
A0005215
Fig. 3:
Example for connecting potential equalization lines
1
Distributor/T-Box
2
Bus devices for potentially explosive atmospheres
3.1 Bus termination PROFIBUS PA
3.2 Bus termination PROFIBUS DP
4
Bus power supply unit or automation system
4a Potential equalization line is fed out into the safe area
!
Note!
The length of the spurs is to consider.
1
1
2
2
3.1
4
4a
EX
EX
R
C
3.2
R
GND
+5 V
R
R
