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.
5.4.4
Commissioning with vapor
①
Pressure transmitter
⑦
Drain valves
②
Stabilizing valve
⑧
Condensate pots
③
,
④
Differential pressure valves
⑨
Differential pressure transducer/Orifice plate
⑤
Differential pressure lines
⑩
Insulation
⑥
Shut-off valves
Figure 5-2
Measuring steam
Requirement
All valves are closed.
