Pressure Measurement - Siemens SITRANS P Operating Instructions Manual

Parameter assignment
9.2 Parameter assignment over device with display
Setting range:
Factory setting:
9.2.4.1

Pressure measurement

To set the application of the device for the pressure measurement, select the "linear"
characteristic curve using the "Application" parameter (PRESS).
● The device uses a linear characteristic curve:
112
Application
Pressure
Level
Volume flow
Volume
Mass flow
Customized characteris‐
tic curve
PRESS, or as specified in order
Characteristic curve
PRESS Linear, proportional to pressure
LEVEL Linear, proportional to level
VSLN Linear, square root
Proportional to flow rate, linear up
to the application point (Page 119)
VSOFF Hold at 0, square root
Proportional to flow rate, deactiva‐
ted up to the suppression of the re‐
sidual flow (Page 132)
VSLN2 Two-step linear - square root
Proportional to flow, two-step linear
up to the application point
VSL2B Two-step linear, square root (bidir‐
ectional)
CYLIN Cylinder vessel
SPHER Sphere vessel
VLIN Linear vessel
CONIC Conical bottom vessel
PARAB Parabolic bottom vessel
HALF Half sphere bottom vessel
FLAT Flat sloped bottom vessel
PARAE Parabolic ends vessel
MSLN Linear, square root
Proportional to flow rate, linear up
to the application point (Page 119)
MSOFF Hold at 0, square root
Proportional to flow rate, deactiva‐
ted up to the suppression of the re‐
sidual flow (Page 132)
MSLN2 Two step linear, square root
Proportional to flow, two-step linear
up to the application point
MSL2B Two-step linear, square root (bidir‐
ectional)
CUSTM Custom
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC