14
4 Mounting
VEGAPULS 69 • Foundation Fieldbus
47251-EN-160815
4 Mounting
4.1 General instructions
Protect your instrument against moisture ingress through the following
measures:
•
Use the recommended cable (see chapter "Connectingtopower
supply")
•
Tighten the cable gland
•
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
Make sure that all parts of the instrument exposed to the process are
suitable for the existing process conditions.
These are mainly:
•
Active measuring component
•
Processtting
•
Process seal
Process conditions are particularly:
•
Process pressure
•
Process temperature
•
Chemical properties of the medium
•
Abrasionandmechanicalinuences
Youcannddetailedinformationontheprocessconditionsinchapter
"Technicaldata" as well as on the type label.
Metric threads
In the case of instrument housings with metric thread, the cable
glands are screwed in at the factory. They are sealed with plastic
plugs as transport protection.
You have to remove these plugs before electrical connection.
NPT thread
In the case of instrument housings with self-sealing NPT threads, it is
not possible to have the cable entries screwed in at the factory. The
free openings for the cable glands are therefore covered with red dust
protection caps as transport protection. The dust protection caps do
notprovidesucientprotectionagainstmoisture.
Prior to setup you have to replace these protective caps with ap-
proved cable glands or close the openings with suitable blind plugs.
The mounting position and orientation of the sensor must take into ac-
count the limitations in chapter "For your safety", "Radio approval for
USA" "
RadioapprovalforCanada" of this operating instructions.
Protection against mois-
ture
Suitability for the pr
ocess
conditions
Cable glands
Radio license for USA/
Canada
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