VEGA VEGABAR 83 Profibus PA - Quick setup guide - Manual (Page 7)

7
3 Mounting
VEGABAR 83 • Profibus PA
46316-EN-131125
3 Mounting
3.1 General instructions for use of the instrument
Protect your instrument against moisture penetration through the fol-
lowing measures:
•
Use the recommended cable (see chapter "Connecting to power
supply")
•
Tighten the cable gland
•
Turn the housing in such a way that the cable gland points down-
ward
•
Loop the connection cable downward in front of the cable gland
This applies particularly to:
•
Outdoor mounting
•
Installations in areas where high humidity is expected (e.g. through
cleaning processes)
•
Installations on cooled or heated vessels
3.2 Ventilation and pressure compensation
The filter element is mounted into the electronics housing. It has the
following functions:
•
Ventilation of the electronics housing
•
Atmospheric pressure compensation (with relative pressure meas-
uring ranges)
→
Turn the housing so that the filter element points downward after
the instrument is installed. This provides better protection against
buildup.
1 2 3
4 4 4
Fig. 2: Position of the filter element - non-Ex, Ex-ia version
1 Housing plastic, stainless steel precision casting
2 Housing aluminium
3 Housing stainless steel, electropolished
4 Filter element
With the following instruments a blind plug is installed instead of the
filter element:
•
Instruments in protection IP 66/IP 68 (1 bar) - ventilation via capil-
laries in non-detachable cable
•
Instruments with absolute pressure
Protection against mois-
ture
Instruments in non-Ex
and Ex-ia version