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4 Mounting
VEGABAR 67 • Foundation Fieldbus - climate compensated
39446-EN-130321
4 Mounting
4.1 General instructions
Make sure that all parts of the instrument coming in direct contact
with the process, especially the sensor element, process seal and
processtting,aresuitablefortheexistingprocessconditions,such
as process pressure, process temperature as well as the chemical
properties of the medium.
Youcanndthespecicationsinchapter"Technical data"andonthe
nameplate.
Toprotectthediaphragm,theprocessttingiscoveredbyaprotec-
tive cap.
Remove the protective cap just before installation so that the dia-
phragm will not get damaged. It is recommended to keep the cap and
use it again later for storage or transport.
Select an installation position you can easily reach for mounting and
connectingaswellaslaterretrottingofadisplayandadjustment
module. The housing can be rotated by 330° without the use of any
tools. You can also install the display and adjustment module in four
dierentpositions(eachdisplacedby90°).
Usetherecommendedcables(seechapter"Connecting to power
supply")andtightenthecablegland.
You can give your instrument additional protection against moisture
penetration by leading the connection cable downward in front of the
cableentry.Rainandcondensationwatercanthusdraino.Thisap-
plies mainly to outdoor mounting as well as installation in areas where
high humidity is expected (e.g. through cleaning processes) or on
cooled or heated vessels.
Fig. 3: Measures against moisture penetration
The ventilation of the electronics housing as well as the atmospheric
pressurecompensationforthemeasuringcellarerealisedviaalter
element in the area of the cable gland.
Suitability for the process
conditions
Diaphragm pr
otection
Installation position
Moisture
Ventilation and pressure
compensation
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