Vega VEGADIF 65 Operating Instructions Manual page 67

Measurement setup for
closed vessels
Prepare the adjustment
VEGADIF 65 • Foundation Fieldbus
+
III
Fig. 48: Preferred measurement setup for closed vessels
VEGADIF 65
I
II Three-fold valve block
III Precipitator
1, 5 Drain valves
2, 4 Inlet valves
6, 7 Vent valves on VEGADIF 65
A, BBlocking valves
Proceed as follows:
1
Fill the vessel to just above the lower tap
2
Fill measuring system with medium
Close valve 3: Separate plus and minus side
Open valve A and B: Open block valves
3
Vent plus side (probably empty minus side)
Open valve 2 and 4: Discharge medium on the plus side
Briefly open valve 6 and 7, then close again: Fill the plus side
completely with the medium and remove air.
4
Set measurement loop to operation
Now:
Valve 3, 6 and 7 are closed
Valves 2, 4, A and B are open
Then carry out adjustment, see below.
B
A
6 7
I
+
–
II
3
2 4
1
8 Setup
III
5
67