SITRANS P310 with HART
28 A5E35075329-01, 05/2015
3. With a
pressure transmitter below the differential pressure transducer
, open both blowout valves ⑦ one after the other
until the air-free liquid escapes.
In the case of a
pressure transmitter above the differential pressure transducer
, open both vent valves ⑩ one after the
other until the air-free liquid escapes.
4. Close both drain valves
⑦ or vent valves ⑩.
5. Open the differential pressure valve
③ and the vent valve on the positive side of the pressure transmitter ① slightly,
until fluid escapes without bubbles.
6. Close the vent valve.
7. Open the vent valve on the negative side of the pressure transmitter
① slightly, until fluid escapes without bubbles.
8. Close the differential pressure valve
③.
9. Open the differential pressure valve
④ until the liquid emerges and then close it.
10. Close the vent valve on the negative side of the pressure transmitter
①.
11. Open the differential pressure valve
③ by rotating it in ½ turn.
12. Check and, if necessary, correct the zero point (4 mA) when the start-of-scale value is 0 kPa.
13. Close the stabilizing valve
②.
14. Open the differential pressure valves (
③ and ④) completely.
Differential pressure valves
Differential pressure transducer/Orifice plate
Differential pressure lines
Figure 5-2 Measuring steam
All valves are closed.
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