Vega VEGABAR 81 Quick Setup Manual - 3 Mounting
6
3 Mounting
VEGABAR 81 • Profibus PA
46302-EN-160212
3 Mounting
3.1 General instructions for use of the instrument
Protect your instrument against moisture ingress through the following
measures:
•
Use the recommended cable (see chapter "Connecting to power
supply")
•
Tighten the cable gland
•
When mounting horizontally, turn the housing so that the cable
gland points downward
•
Loop the connection cable downward in front of the cable gland
This applies mainly to outdoor installations, in areas where humidity is
expected (e.g. through cleaning processes) and 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)
→
In case of horizontal mounting, turn the housing so that the filter
element points downward after the instrument is installed. This
provides better protection against buildup.
1
2
3
6
6
6
6
6
5
4
Fig. 2: Position of the filter element - non-Ex, Ex-ia and Ex-d-ia version
1 Single chamber housing plastic, stainless steel (precision casting)
2 Single chamber housing Aluminium
3 Single chamber housing, stainless steel electropolished
4 Double chamber housing plastic
5 Double chamber housing Aluminium
6 Filter element
Protection against mois-
ture
Instruments in non-Ex,
Ex-ia and Ex-d-ia version