ELECTRICAL CONNECTIONS
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OPTISWIRL 4200
www.krohne.com
02/2022 - 4003930810 - MA OPTISWIRL4200 R10 en
4.6 Ingress protection
The signal converter in aluminium housing meets the requirements for IP66/67 in accordance
with EN 60529 both for the compact and for the remote version.
The signal converter in stainless steel housing meets the requirements for IP66, IP68, IP69K
both for the compact and for the remote version.
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
1
upstream of the measuring device to prevent water
from getting into the housing.
•
The cable feedthroughs
2
must be tightened. Note that the clamping range of the cable
feedthrough corresponds to the outer diameter of the cable.
•
Align the measuring device so that the cable feedthrough is never facing up
3
.
•
Close any unused cable feedthroughs using blind plugs
4
suitable for the protection category.
•
Do not remove the required cable bushing from the cable feedthrough.
CAUTION!
After all servicing and maintenance work on the measuring device, the specified ingress
protection category must be ensured again.
Figure 4-11: Cable feedthrough