16
4 Mounting
NCR-84 Two-wire 4 … 20 mA/HART
51141-EN-181127
4 Mounting
4.1 General instructions
Protect your instrument against moisture ingress through the following
measures:
•
Use a suitable connection cable (see chapter "
Connecting to
power supply
")
•
Tighten the cable gland or plug connector
•
When mounting horizontally, turn the housing so that the cable
gland or plug connector point downward
•
Lead the connection cable downward in front of the cable entry or
plug connector.
This applies mainly to outdoor installations, in areas where high
humidity is expected (e.g. through cleaning processes) and on cooled
or heated vessels.
To maintain the housing protection, make sure that the housing lid is
closed during operation and locked, if necessary.
Make sure that the degree of contamination specified in chapter
"
Technical data
" meets the existing ambient conditions.
Make sure before mounting that all parts of the instrument exposed to
the process are suitable for the existing process conditions.
These are mainly:
•
Active measuring component
•
Process fitting
•
Process seal
Process conditions in particular are:
•
Process pressure
•
Process temperature
•
Chemical properties of the medium
•
Abrasion and mechanical influences
You can find detailed information on the process conditions in chapter
"
Technical data
" as well as on the type label.
The instrument is suitable for standard and extended ambient condi-
tions acc. to IEC/EN 61010-1.
As a standard feature, the VEGAPULS 64 is separate from the pro-
cess through its plastic antenna encapsulation.
Optionally, the instrument is available with a Second Line of Defense
(SLOD), a second process separation. It is located as gas-tight
leadthrough between the process component and the electronics.
This means additional safety against penetration of the medium fron
the process into the instrument.
Protection against mois-
ture
Suitability for the process
conditions
Suitability for the ambient
conditions
Second Line of Defense
925-0373 Rev A