KROHNE H250 M9 ES EN - Manual (Page 19)

ELECTRICAL CONNECTIONS
4
19
H250
www.krohne.com 09/2012 - 4002294201 MA H250 KINAX R01 en
4.3 Ground wire
4.4 Ingress protection
The measuring device meets all requirements of protection category IP66/67.
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
3 3 3 upstream of the measuring device to prevent water
from getting into the housing.
• The cable feedthroughs 2 2 2 2 must be tightened.
• Close the unused cable feedthroughs using blind plugs 1 1 1 1.
DANGER!
The grounding wire may not transfer any interference voltage.
Do not use this grounding cable to ground any other electrical devices.
DANGER!
After all servicing and maintenance work on the measuring device, the specified protection class
must be ensured again.
Figure 4-1: Cable feedthrough
1 Use blanking plugs if no cable is routed through
2 Tighten cable feedthrough firmly
3 Lay the cable in a loop
MA_H250_Sonder_Kinax_R01_en_4002294201_PRT.book Page 19 Monday, September 17, 2012 11:13 AM