Post-Installation Test UMSITRPDS3-1
November 2005
5-10
8. Close the active pressure valve (2).
9. Open the active pressure valve (3B) slightly until air-free liquid emerges, then close it.
10. Close the vent valve at the low-pressure chamber (1).
11. Open the active pressure valve (3A) by 1/2 turn.
12. Check and correct zero (4 mA) if necessary at zero bar.
13. Close the compensation valve (2).
14. Open the active pressure valves (3A and 3B) fully.
Transmitter above the active pressure taps (normal
arrangement)
Transmitter below the active pressure taps
(exception)
1
2
3
4
Transmitter
Compensation valve
Active pressure valves
Active pressure lines
5
7
10
12
Shutoff valves
Blowout valves
Active pressure taps
Gas collectors (optional)
FIGURE 5-5 Measuring Liquids
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