Level Measurement - Vega VEGADIF 65 Operating Instructions Manual

Closed vessel
VEGADIF 65 • 4 ... 20 mA
The process cannot be sealed off.
The pressure extraction points (A and B) are at the same geo-
desic height.
5. Put measurement loop into operation:
Close valve 3: Separate high and low pressure side
Open valve 4: Connect low pressure side
Now:
Valves 1, 3, 5, 6 and 7 are closed
Valves 2 and 4 are open
Valves A and B open
6. Carry out position correction, if flow can be blocked. In this case,
step 5 is not required.
7.3

Level measurement

Fig. 49: Preferred measurement setup for closed vessels
I VEGADIF 65
II 3-fold valve block
III Precipitator
1, 5 Drain valves
2, 4 Inlet valves
6, 7 Vent valves on VEGADIF 65
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
Valves 1, 3, 5: Configuration with 5 valves.
2)
2)
B
+
A
6 7
I
+ –
II
III
3
2
1
7 Setup
III
4
5
59