Endress+Hauser Proline Prowirl 72 - 4.4 Degree of protection

4 Wiring Proline Prowirl 72 FOUNDATION Fieldbus
28 Endress + Hauser
4.3.3 Terminal assignment
4. 4 Degree of protection
The measuring device meets 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 (NEMA 4X) 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.
• The housing screws and screw caps must be firmly tightened.
• The cables used for connection must be of the specified outside diameterSeite 66, cable
entries.
• The cable entries must be firmly tightened (point aFig. 20).
• The cable must loop down before it enters the cable entry ("water trap") (point bFig. 20).
This arrangement prevents moisture penetrating the entry.
! Note!
The cable entries should not point upwards.
a0001914
Fig. 20: Installation instructions for 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.
Terminal no. (inputs/outputs)
Order variant 1 2
72***-***********K FF + FF –
ab