Siemens SITRANS LR250 Operating Instructions Manual page 129

Auto False Echo Suppression Range (2.5.10.2.)
Defines the endpoint of the Learned TVT distance. Units are defined in Unit (2.3.1.).
Values
1. Press RIGHT arrow to open Edit mode.
2. Enter the new value and press RIGHT arrow to accept it.
3. Set Auto False Echo Suppression (2.5.10.1.).
Hover Level (2.5.10.3.)
Defines how high the TVT (Time Varying Threshold) is placed above the noise floor of the echo
profile, as a percentage of the difference between the peak of the largest echo in the profile and
the noise floor. See Auto False Echo Suppression (2.5.10.1.) for an illustration.
Values
When the device is located in the center of the vessel, the TVT hover level may be lowered to
increase the confidence level of the largest echo.
Shaper Mode (2.5.10.4.)
Enables/disables TVT shaper (2.5.11.)
Options
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
Range: 0.00 to 20.00 m
Default: 1.00 m
Range: 0 to 100%
Default: 40%
ON
* OFF
Parameter reference
127