KROHNE BW 25 EN - Manual (Page 26)

4
ELECTRICAL CONNECTIONS
26
BW25
www.krohne.com 09/2010 - 4000432302 MA BW25 R05 en
4.4 Grounding
4.5 Protection category
The measuring device meets all requirements of protection category IP67, NEMA 4x.
Therefore it is essential to observe the following points:
• Use only original gaskets. They must be clean and free of any damage. Defective gaskets must
be replaced.
• The electrical cables used must be undamaged and must comply with regulations.
• The cables must be laid with a loop 3 upstream of the measuring device to prevent water
from getting into the housing.
• The cable feedthroughs 2 must be tightened.
• Close the unused cable feedthroughs using blanking plugs 1.
1 Grounding on the flange
2 Grounding indicator M9
3 Grounding indicator M10
DANGER!
The grounding wire may not transfer any interference voltage.
Do not use this grounding wire to ground any other electrical devices.
DANGER!
After all servicing and maintenance work on the measuring device, the specified protection
category has to be ensured again.
MA_BW25_R05_en_432302_PRT.book Page 26 Tuesday, September 28, 2010 8:17 AM