Operating
8
This chapter provides details on the general operation and functionality of the SITRANS LR500
ser
ies. For instructions on the use of the device local display HMI, refer to Local HMI (Page65).
For a complete list of parameters, see Parameter assignment (Page113) or Parameter
assignment (Page113).
8.1 Starting measurement
After startup, the measurement view reports a list of measurement values in the order shown
below.
Process value Text as shown in measurement view of device
Level LEVEL
Space SPACE
Distance DISTANCE
Volume* VOLUME
Custom* CUSTOM
Loop current** LOOP CURRENT
* "Volume" and "Custom" are not visible until congur
ed.
** Measurements based on primary variable (PV) selection. Default PV is set to "Distance" at startup. (See
"Operation" in quick commissioning wizard, or parameter "PV selection" in menu "Setup > Select output" to
change this default.)
The following information will help you congure your device for optimal performance and
reliability.
Response Rate
The response rate of the device inuences the measurement stability. Use the slowest rate
possible with the application requirements.
Dimensions
Dimensions of the vessel, wet well, or reservoir (other than lower and upper calibration
points) are only important if you require volume readings. In this case, all dimensions are
used to calculate the volume value in terms of level.
SITRANS LR500 series with mA/HART
Operating Instructions, 03/2024, A5E51099898-AA 85
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