PROline Promag 53 4 Wiring
Endress+Hauser 59
4.4 Degree of protection
The devices fulfill all the requirements for NEMA 4X (IP 67). Compliance with the follow-
ing points is mandatory following installation in the field or servicing, in order to ensure
that NEMA 4X (IP 67) protection 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 threaded fasteners and screw covers must be firmly tightened.
• The cables used for connection must be of the specified outside diameter
(see Page 122).
• Firmly tighten the conduit entries (Fig. 40).
• The conduit must loop down before they enter the conduit entries (“water trap”,
Fig. 40). This arrangement prevents moisture penetrating the entry. Always install the
measuring device in such a way that the conduit entries do not point up.
• Remove all unused conduit entries and insert plugs instead.
• Do not remove the grommet from the conduit entry.
Fig. 40: Installation instructions, conduit entries
"
Caution:
Do not loosen the threaded fasteners of the Promag sensor housing, as otherwise the
degree of protection guaranteed by Endress+Hauser no longer applies.
!
Note:
The Promag W and Promag P sensors can be supplied with NEMA 6P (IP 68) rating
(permanent immersion in water to a depth of 10 ft/3 meters). In this case the transmitter
must be installed remotely from the sensor.
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