Siemens 7ML5431 Operating Instructions Manual page 135

Auto False Echo Suppression Range (2.8.7.2.)
Note
Changes take effect only at the next measurement. "Master reset" does not clear the
learned/stored TVT, select "Off" to turn it off or "learn" for a new TVT. See Master Reset
(4.1.)
Specifies the range within which Learned TVT is used [see Auto False Echo Suppression
(2.8.7.1.) for more detail].
Values
Related parameters
1. Calculate range according to Auto False Echo Suppression (2.8.7.1.) steps 1 and 2.
2. Press RIGHT arrow to open Edit mode.
3. Enter the new value and press RIGHT arrow to accept it.
4. Set Auto False Echo Suppression (2.8.7.1.).
Hover Level (2.8.7.3.)
Note
Changes take effect only at the next measurement.
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 (2.8.7.1.) 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 (2.8.7.4.)
Enables/disables the TVT shaper.
Options
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG
Range: 0.00 to 20.00 m
Default: 1.00 m
Units (2.2.1.)
Range: 0 to 100%
Default: 40%
ON
* OFF
Parameter reference
135