Auto False Echo Suppression Range (2.8.2); Hover Level (2.8.3); Shaper Mode (2.8.4) - Siemens SITRANS LR560 Operating Instructions Manual

Used together with SHAPER MODE (2.8.4) (Page 127) to screen out false echoes in a vessel
with known obstructions. A 'learned TVT' (time varying threshold) replaces the default TVT over
a specified range.
● See Auto False Echo Suppression under SHAPER MODE (2.8.4) (Page 127) for a more
detailed explanation.
● To set via SIMATIC PDM, see Auto false echo suppression (Page 69)
● To set via local operation, see AFES WIZARD (1.2.) (Page 106)
8.2.8.2

AUTO FALSE ECHO SUPPRESSION RANGE (2.8.2)

Factory setting:
Setting range:
Purpose:
Description:
8.2.8.3

HOVER LEVEL (2.8.3)

Note
Changes take effect only at the next measurement.
Factory setting:
Setting range:
Purpose:
Description:
8.2.8.4

SHAPER MODE (2.8.4)

Factory setting:
Setting range:
Purpose:
SITRANS LR560 (mA/HART)
Operating Instructions, 06/2017, A5E34647946-AD
1.00 m
0.00 to 45.00 m (or 105.00 m depending on model)
Defines the endpoint of the Learned TVT distance. Units are defined in
UNITS (2.2.1.) (Page 111).
Used in combination with AUTO FALSE ECHO SUPPRESSION (2.8.1)
(Page 126).
40%
0 to 100%
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.
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.
OFF
ON, OFF
Enables/disables the TVT shaper.
Parameter Reference
8.2 SETUP (2.)
127