Siemens SITRANS LUT400 Operating Instructions Manual page 227

To access measured values via SIMATIC PDM:
Open the menu View – Process Variables.
Note
These parameters will display the simulated value when in simulation mode (see Simulation
process (Page 155)).
Level Measurement (2.12.5.1.)
The distance to monitored surface referenced from Low Calibration Point (2.2.1.)
(Page 171), defined in Units (2.1.1.) (Page 168).
Space Measurement (2.12.5.2.)
The distance to monitored surface referenced from Units (2.1.1.) (Page 168), defined in High
Calibration Point (2.2.2.) (Page 172).
Distance Measurement (2.12.5.3.)
The distance to monitored surface referenced from the transducer face (sensor reference
point), defined in Units (2.1.1.) (Page 168).
Volume Measurement (2.12.5.4.)
The calculated vessel volume (calculated from level and scaled according to vessel shape)
in Volume Units (2.6.2.) (Page 181).
Head Measurement (2.12.5.5.)
Available only on LUT430 (Pump and Flow model), and LUT440 (OCM model).
Corresponds to Head [the distance from Zero Head Offset (2.15.3.5.) (Page 233) to the
monitored surface in Units (2.1.1.) (Page 168)].
Flow Measurement (2.12.5.6.)
Available only on LUT430 (Pump and Flow model) and LUT440 (OCM model).
The calculated flowrate, defined in Flowrate Units (2.15.3.7.) (Page 233).
SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
225