VEGA VEGADIF 55 4 … 20 mA_HART - Manual (Page 15)

4 .3 Mounting instructions for level measurement
+
p
atm
min. p
atm 1
2
3
4
5
Fig. 8: Measurement setup, level measurement in the open vessel
1
Minus side is open to the atmospheric pressure
2 VEGADIF 55
3 Block valve
4 Precipitator
5 Drain valve
à Mount VEGADIF 55 below the lower measurement connection so
that the effective pressure lines are always filled with liquid
à Minus side is open to the atmospheric pressure
+
–
min.
p
atm
p
atm
1
2
Fig. 9: Measurement setup, level measurement in the open vessel
1
VEGADIF 55
2 Minus side is open to the atmospheric pressure
à Mount VEGADIF 55 directly to the vessel
à Minus side is open to the atmospheric pressure
Level measurement in
the open vessel with
effective pressure line
Level measurement in
the open vessel with
flange
VEGADIF 55 • 4 … 20 mA/HART 15
4 M ounting
31731
-EN
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