Wiring Promag 53 PROFIBUS DP/PA
64 Endress+Hauser
4.5 Degree of protection
The devices fulfill all the requirements for IP 67 (NEMA 4X).
Compliance with the following points is mandatory following installation in the field or
servicing, in order to ensure that IP 67 protection (NEMA 4X) is maintained:
• The housing seals must be clean and undamaged when inserted into their grooves. The
seals must be dried, cleaned or replaced if necessary.
• All housing screws and screw covers must be firmly tightened.
• The cables used for connection must be of the specified external diameter → 159.
• Tighten cable glands to prevent leakages.
• The cables must loop down before they enter the cable entries ("water trap"). This
arrangement prevents moisture penetrating the entry. Always install the measuring
device in such a way that the cable entries do not point up.
• Close off unused cable entries using suitable insert plugs.
• Do not remove the grommet from the cable entry.
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Fig. 41: Installation instructions, cable entries
"
Caution!
Do not loosen the screws of the sensor housing as otherwise the degree of protection
guaranteed by Endress+Hauser no longer applies.
!
Note!
The sensor can also be supplied with IP 68 rating (permanent immersion in water to a depth
of 3 meters (10 ft). In this case the transmitter must be installed remote from the sensor.
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