Commissioning With Vapor - Siemens SITRANS P500 HART Compact Operating Instructions

3. With a pressure transmitter below the differential pressure transducer, open both blowout valves
until the air-free liquid escapes.
In the case of a pressure transmitter above the differential pressure transducer, open both vent valves
other until the air-free liquid escapes.
4. Close both drain valves
5. Open the differential pressure valve
until fluid escapes without bubbles.
6. Close the vent valve.
7. Open the vent valve on the negative side of the pressure transmitter
8. Close the differential pressure valve
9. Open the differential pressure valve
10. Close the vent valve on the negative side of the pressure transmitter
11. Open the differential pressure valve
12. Check and if required adjust the zero point (4 mA) if the start of scale value is 0 bar.
13. Close the stabilizing valve
14. Open the differential pressure valves (
5.3.4

Commissioning with vapor

①
Pressure transmitter
②
Stabilizing valve
③ ④
, Differential pressure valves
⑤
Differential pressure lines
⑥
Shut-off valves
Figure 5-1 Measuring steam
Prerequisite
All valves are closed.
22
⑦ ⑩
or vent valves .
③
and the vent valve on the positive side of the pressure transmitter
③
.
④
until the liquid emerges and then close it.
③
by rotating it in half a turn.
②
.
③ ④
and
①
slightly, until fluid escapes without bubbles.
①
.
) completely.
⑦
Drain valves
⑧
Condensate pots
⑨
Differential pressure transducer/Orifice plate
⑩
Insulation
⑦
one after the other
⑩
one after the
①
slightly,
SITRANS P500 with HART
A5E02344532-04, 12/2014