VEGA VEGADIF 55 4 … 20 mA_HART - Manual (Page 12)

Danger:
I
nstruments for oxygen applications should be unpacked just before
mounting. After removing the protective cover of the process fitting, the
label "O₂" will be visible on the process fitting. Penetration of oil,
grease and dirt should be avoided. Danger of explosion!
U
se the recommended cables (see chapter "Connecting to power
supply") and tighten the cable gland.
Y ou can give your VEGADIF 55 additional protection against moisture
penetration by leading the connection cable downward in front of the
cable entry. Rain and condensation water can thus drain off. This
applies 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.
4 .2 Mounting instructions for flow measurement
+
–
1
2
4
3
Fig. 5: Measurement setup, flow measurement in gases with VEGADIF 55
1
VEGADIF 55
2 Three-fold valve block
3 Block valves
4 Orifice or impact pressure probe
à Mount VEGADIF 55 above the measurement loop so that
condensate can drain off in the process cable.
Oxygen applica-
tions
Moisture
Flow measurement in
gases
12 VEGADIF 55 • 4 … 20 mA/HART
4 M ounting
31731
-EN
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