Vega VEGADIF 65 Operating Instructions Manual page 64

8 Setup
Measurement setup for
liquids
Prepare the adjustment
64
+
III
Fig. 46: Preferred measurement setup for liquids
VEGADIF 65
I
II Three-fold valve block
III Precipitator
1.5 Drain valves
2.4 Inlet valves
3
Breather valve
6.7 Vent valves on VEGADIF 65
A, B Blocking valves
Proceed as follows:
1 Close valve 3
2
Fill measuring system with medium.
Open valves A, B, 2, 4: Medium flows in
If necessary, clean the differential pressure lines: - with gases by
blowing out with compressed air - with liquids by rinsing.
For this purpose close valve 2 and 4, i.e. block the instrument.
Then open valve 1 and 5 so that the effective pressure lines blow
out/rinse.
After cleaning, close valves 1 and 5
3
Remove air from instrument:
Open valves 2 and 4: Medium flows in
Close valve 4: Minus side will be closed
Open valve 3: Equalisation plus and minus side
Briefly open valve 6 and 7, then close again: Fill the measuring
instrument completely with the medium and remove air
Arrangement with 5 valves.
3)
A
B
6 7
I
+ –
II
3
2 4
5
1
VEGADIF 65 • Foundation Fieldbus
III
3)