VEGA VEGADIF 55 4 … 20 mA_HART - Manual (Page 18)

Information:
L
evel measurement is only ensured between the upper edge of the
lower and the lower edge of the upper pressure transmitter.
+
–
min.
max.
1
2
2
3
4
6
5 5
Fig. 13: Measurement setup in closed vessel with superimposed steam
1
Condensate vessel
2 Block valves
3 VEGADIF 55
4 Precipitator
5 Drain valves
6 Three-fold valve block
à Mount VEGADIF 55 below the lower measurement connection so
that the effective pressure lines are always filled with liquid
à Connect minus side always above the max. level
à The condensate vessel ensures a constant pressure on the minus
side
à For measurements in products with solid content such as e.g. dirty
liquids, the installation of separators and drain valves is
recommended to enable collection and removal of debris and
sediment.
Level measurement in
closed vessel with
steam layer with effec-
tive pressure line
18 VEGADIF 55 • 4 … 20 mA/HART
4 M ounting
31731
-EN
-081119