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Procedure
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%
A
Pressure transmitter above the differential
pressure transducer
B
Pressure transmitter below the differential
pressure transducer
①
Pressure transmitter
⑦
Blowout valves
②
Stabilizing valve
⑧
Condensate vessels (optional)
③
,
④
Differential pressure valves
⑨
Differential pressure transducer (e.g.
FPS200 and FPS300)
⑤
Differential pressure lines
⑩
3-way valve manifold
⑥
Shut-off valves
1. Open both the shut-off valves
⑥
at the pressure tapping point.
2. Open the stabilizing valve
②
.
3. Open the differential pressure valve (
③
or
④
).
4. Check and, if necessary, correct the zero point when the lower range value is 0 bar (4 mA).
5. Close the stabilizing valve
②
.
6. Open the other differential pressure valve (
③
or
④
).
Commissioning
8.5 Application examples
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC
95