VEGA VEGADIF 65 Foundation Fieldbus - Manual (Page 16)

16
4 Mounting
VEGADIF 65 • Foundation Fieldbus
36130-EN-130417
Detailed instructions for mounting the DP flow element are stated in
DIN EN ISO 5167 as well as in the instrument documentation from the
respective manufacturer.
You will find general recommendations for the installation of effective
pressure lines in the corresponding national or international stand-
ards. When installing effective pressure lines outdoors, consider
applying suitable anti-freeze protection, e.g. tube heating. Install
effective pressure lines with a monotonic downward slope of at least
10 %.
In case of strong vibrations at the application position, the instrument
version with external electronics should be used.
Higher process temperatures often mean also higher ambient tem-
peratures for electronics and connection cable. Make sure that the
upper temperature limits stated in chapter "Technical data" for the
environment of the electronics housing and connection cable are not
exceeded.
4.2 Instructions for oxygen applications
Oxygen and other gases can be explosive when brought into contact
with oils, grease and plastics, so the following measures must also be
taken:
•
All components of the plant, such as e.g. measuring instru-
ments must be cleaned according to the requirements of BAM
(DIN 19247)
•
Depending on the seal material, certain temperatures and pres-
sures must not be exceeded in oxygen applications, see chapter
"Technical data"
Danger:
Instruments for oxygen applications must be unpacked just before
mounting. After removing the protective cover of the process fitting,
the label "O
2
" will be visible on the process fitting. Penetration of oil,
grease and dirt should be avoided. Danger of explosion!
4.3 Mounting and connection instructions
When connecting the VEGADIF 65 to the measurement loop, take
note of the plus/minus side of the process component. The plus side
is marked with a "+", the minus side with a "-" on the process compo-
nent next to the oval flanges.
Effective pressure lines
Vibrations
Temperature limits
Oxygen applications
Connection plus/minus
side