Remote operation
7.1 Operating via SIMATIC PDM
SITRANS LR250 with mA/HART
80 Operating Instructions, 10/2019, A5E32220602-AG
Open the menu Device – Echo Profile Utilities and click the tab TVT Shaper.
● Initial profile graph is blank upon entry to dialog. Click on Measure to view and upload the
current TVT from device.
● Change the position of the cursor on the TVT using the Point+ and Point– buttons: raise
and lower the TVT using
Offset+ and Offset-.
● Alternatively, enter values for Point and Offset directly into the dialog boxes.
● Click on Transfer to Device.
7.1.6.5 Auto false echo suppression
Ensure material level is below all known obstructions when using Auto False Echo
Suppression to learn the echo profile. An empty or almost empty vessel is recommended.
Note the distance to material level when learning the echo profile, and set Auto False
Echo Suppression Range to a shorter distance to avoid the material echo being screened
out.
Set Auto False Echo Suppression and Auto False Echo Suppression Range during
startup, if possible.
If the vessel contains an agitator it should be running.
Before adjusting these parameters, rotate the device for best signal (lower false-echo
amplitude).
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