Vega VEGADIF 65 Operating Instructions Manual page 70

8 Setup
Measurement setup for
liquids
Prepare the adjustment
70
+
III
Fig. 51: 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.
Close valve 2 and 4, block the instrument
Open valve 1 and 5
Close valve 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
4
Put measurement loop into operation:
Close valve 3: Separate plus and minus side
Arrangement with 5 valves.
5)
A
B
6 7
I
+ –
II
3
2 4
5
1
VEGADIF 65 • Foundation Fieldbus
III
5)