KROHNE H250 M8-M9-M10 EN - Manual (Page 41)

ELECTRICAL CONNECTIONS
4
41
H250
www.krohne.com 04/2011 - 4000269302 MA H250-R02 en
4.6 Protection category
The measuring device meets all requirements of protection category IP
Therefore it is essential to observe the following points:
• Use only original gaskets. They must be clean and free of any damage. Defective gaskets have
to 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 glands 2 must be tightened.
• Close the unused cable glands using blanking plugs 1.
Indicator Protection category
M9 IP65/67
M8 IP65
M10 IP66/67
DANGER!
After all servicing and maintenance work on the device, the specified protection category has to
be ensured again.
Figure 4-16: Cable gland
1 Use blanking plugs if no cable is routed through
2 Tighten cable gland firmly
3 Lay the cable in a loop
MA_H250_R02_en_269302_PRT.book Page 41 Tuesday, April 12, 2011 10:17 AM