VEGA VEGABAR 87 4 … 20 mA_HART - Quick setup guide - Manual (Page 7)

7
3 Mounting
VEGABAR 87 • 4 … 20 mA/HART
46690-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.
Protection against mois-
ture
Instruments in non-Ex,
Ex-ia and Ex-d-ia version