Vega VEGADIF 85 - Set up Measuring System; Level Measurement Setups

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8 Set up measuring system
VEGADIF 85 • Modbus and Levelmaster protocol
53571-EN-230814
8 Set up measuring system
8.1 Level measurement
+
A
B
1
5
II
I
6
7
3
2
4
+
–
IIIIII
Fig. 41: Preferred measurement setup for closed vessels
I VEGADIF 85
II 3-fold valve block
III Precipitator
1, 5 Drain valves
2, 4 Inlet valves
3 Breather valve
6, 7 Vent valves on VEGADIF 85
A, B Blocking valves
Proceed as follows:
1. Fill the vessel to just above the lower tap
2. Fill measuring system with medium
Closevalve3:Separatehigh/lowpressureside
Open valve A and B: Open block valves
3. Vent high pressure side (probably empty low pressure side)
Open valve 2 and 4: Discharge medium on the high pressure side
Brieyopenvalve6and7,thencloseagain:Fillthehighpressure
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
Closed vessel