VEGA VEGADIF 55 4 … 20 mA_HART - Manual (Page 11)

4 Mounting
4 .1 General instructions
M
ake sure that the wetted parts of VEGADIF 55, especially the seal
and process fitting, are suitable for the existing process conditions
such as pressure, temperature etc. as well as the chemical properties
of the medium.
Y ou find the specification in the "Product information manual"
VEGADIF 55 in chapter "Technical data".
S elect such a mounting position that the instrument is in easy reach
when mounting or connecting as well as for later retrofitting of the
indicating and adjustment module. After loosening the pin, the housing
can be rotated by 380°.
P roceed as follows:
1 L oosen the pin with a 2 mm Allen wrench
2 R otate the housing (max. up to 380°)
3 T ighten the pin
max. 380°
Fig. 4: Direct the housing
D ue to the installation position of VEGADIF 55, a zero point shifting
can be caused, i.e. the measured values is not zero with empty vessel.
Y
ou can correct this zero point shoft either directly on the instrument
via the "E" key or the remote adjustment, see chapter "Operating
elements"
and "Position adjustment".
Y ou find general recommendations for wiring of effective pressure
lines in DIN 19210 "Effective pressure lines for flow systems" or the
corresponding national or international standards. When wiring
effective pressure lines outdoors, keep in mind to use a suitable
antifreeze, e.g. by using tube heat tracing. Wire effective pressure
lines with a monotonic decrease of at least 10 %.
U sing a three-fold or five-fold valve block ensures easy setup,
mounting and maintenance without interrupting the process.
Materials, wetted parts
Mounting position
Installation position
Effective pressure lines
Valve block
VEGADIF 55 • 4 … 20 mA/HART 11
4 M ounting
31731
-EN
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