Siemens SITRANS LR560 Operating Instructions Manual page 70

View saved echo profiles
To view a saved profile, click on the tab View Saved Echo Profiles.
Echo profile data logging
You can store up to 60 profiles at a selected interval (maximum 60 minutes). Inside Echo Profile
Utilities, in the Echo Profile Time Based Storage window:
● Enter the desired interval between stored profiles.
● Enter the maximum number of profiles to be stored (maximum 60).
● Click on Start. A message appears warning of the time delay and warning that all previous
saved profiles will be overwritten. Click on OK to proceed. The new profiles will be saved with
their date and time.
● Click on the tab View Saved Echo Profiles to view the stored profiles.
Auto false echo suppression
Note
• 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).
If you have a vessel with known obstructions, use Auto False Echo Suppression to prevent false
echo detection. This feature can also be used if the device displays a false high level, or the
reading is fluctuating between the correct level and a false high level.
The device learns the echo profile over the whole measurement range and the TVT is shaped
around all echoes present at that moment. See Auto False Echo Suppression (Page 127) for a
more detailed explanation.
The learned TVT will be applied over a specified range. The default TVT is applied over the
remainder of the measurement range.
SITRANS LR560 (mA/HART)
Operating Instructions, 06/2017, A5E34647946-AD
Operating
7.1 Remote operation
69