Siemens SITRANS LUT400 Operating Instructions Manual page 195

2.12.5. Measured Values
Read only. Allows you to view measured values for diagnostic purposes.
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
2.12.5.1. Level Measurement
The distance to monitored surface referenced from Low Calibration Point
(2.2.1.), defined in Units (2.1.1.).
2.12.5.2. Space Measurement
The distance to monitored surface referenced from High Calibration Point
(2.2.2.), defined in Units (2.1.1.).
2.12.5.3. Distance Measurement
The distance to monitored surface referenced from the transducer face
(sensor reference point), defined in Units (2.1.1.).
2.12.5.4. Volume Measurement
The calculated vessel volume (calculated from level and scaled according
to vessel shape) in Volume Units (2.6.2.).
2.12.5.5. Head Measurement
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.) to the
monitored surface in Units (2.1.1.)].
2.12.5.6. Flow Measurement
Available only on LUT430 (Pump and Flow model) and LUT440 (OCM
model).
The calculated flowrate, defined in Flowrate Units (2.15.3.7.).
2.13. Display
Note: Default settings in the parameter tables are indicated with an asterisk (*)
unless explicitly stated.
2.13.1. Local Display Backlight
Time the backlight remains on.
Options
Available only via LUI.
A5E33329501 SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS
Simulation process
on page 122).
OFF
* ON
TIMED (on for five minutes after key
press - takes effect in Measurement
View only)
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