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1. Open the shut-off valve for the test connection
④
.
2. Via the test connection of the shutoff valve
②
, apply the pressure corresponding to the
lower range value to the pressure transmitter.
3. Ensure that the lower range value corresponds to the desired value. Otherwise, correct the
value.
4. Close the shut-off valve for the test connection
④
.
5. Open the shut-off valve
⑥
at the pressure tapping point.
6. Open the shut-off valve for the process
③
.
8.5.2
Differential pressure and flow rate
8.5.2.1
Commissioning in gaseous environments
Requirement
All shut-off valves are closed.
Commissioning
8.5 Application examples
SITRANS P320/P420 with 4 to 20 mA/HART
94
Operating Instructions, 11/2019, A5E44852162-AC