Remote operation
7.1 Operating via SIMATIC PDM
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
87
● Initial profile graph is blank upon entry to dialog. Click on
to view and upload the
current TVT from device.
● Change the position of the cursor on the TVT using the
and
buttons: raise and
lower the TVT using
and
-.
● Alternatively, enter values for
and
directly into the dialog boxes.
● Click on
.
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).