VEGA VEGADIF 55 4 … 20 mA_HART - Manual (Page 66)

+
A
B
6 7
3
2 4
1 5
+ –
II
I
III III
Fig. 66: Closed vessel
I
VEGADIF 55
II Three-fold valve block
III Precipitator
1 , 5 Drain valves
2 , 4 Inlet valves
6 , 7 Vent valves on VEGADIF 55
A, B Block valves
Proceed as follows to prepare for the actual adjustment:
1 F ill the vessel to just above the lower tap
2 F ill measuring system with medium
C lose valve 3: Separate plus and minus side
O pen valve A and B: Open block valves
3 V ent plus side (probably empty minus side)
O pen valve 2 and 4: Discharge medium on the plus side
B
riefly open valve 6 and 7, then close again: Fill the plus side
completely with the medium and remove air.
4 S et measurement loop to operation
N
ow:
V alve 3, 6 and 7 are closed
V alve 2, 4 A and B are open
5 C arry out adjustment, see end of chapter "Level measurement"
66 VEGADIF 55 • 4 … 20 mA/HART
7 S et up
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-EN
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