Siemens SITRANS P Operating Instructions Manual page 111

For volume and mass flow measurements, the device uses adjustable square root functions.
For volume measurement, the device uses the tank characteristic curves for various vessel
geometries.
In the "Customized characteristic curve" application, enter the breakpoints of the characteristic
curve using remote operation (e.g. SIMATIC PDM).
The set application acts directly on the current output:
Figure 9-1 Flow diagram
You have various options for setting the measuring task of your device:
Device with display
"Application" parameter [05]
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC
9.2 Parameter assignment over device with display
Remote operation
Settings > Select output > Application or using the
Quick start wizard
Parameter assignment
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