Siemens SITRANS P DS III - Safety Notes for Commissioning with Differential Pressure and Flow Rate; Commissioning in Gaseous Environments

SITRANS P DS III (7MF4.33.. 7MF4.34.. 7MF4.35..)
A5E03434626-03, 06/2013
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5.4
Differential pressure and flow rate
5.4.1
Safety notes for commissioning with differential pressure and flow rate
WARNING
Incorrect or improper operation
If the lock screws are missing or are not sufficiently tight, and/or if the valves are operated incorrectly or improperly, it could
lead to serious physical injuries or considerable damage to property.
Measure
● Make sure the locking screw and/or the vent valve are screwed in and tightened.
●
Ensure that the valves are operated correctly and properly.
5.4.2
Commissioning in gaseous environments
Usual arrangement
Special arrangement
①
Pressure transmitter
⑥
Shut
-off valves
②
Stabilizing valve
⑦
Drain valves
③, ④
Differential pressure valves
⑧
Condensate vessels
(optional)
⑤
Differential pressure lines
⑨
Differential pressure transducer
Transmitter above
the differential pressure
transducer
Transmitter below
the
differential pressure transducer
Condition
All shut-off valves are closed.