Echo Lock Window (2.7.4.4.); Filtering (2.7.5.) - Siemens SITRANS LR560 Operating Instructions Manual

8.2.7.8

ECHO LOCK WINDOW (2.7.4.4.)

Factory setting:
Setting range:
Purpose:
Description:
Note
Values in Echo Lock window
The Echo Lock window is stored as a standard sample, but displayed in sensor units. Any
value entered for the Echo Lock window will be rounded to the nearest sample.
8.2.7.9

FILTERING (2.7.5.)

NARROW ECHO FILTER (2.7.5.1.)
Factory setting:
Setting range:
Purpose:
Description:
REFORM ECHO (2.7.5.2.)
Factory setting:
Setting range:
Purpose:
SITRANS LR560 (mA/HART)
Operating Instructions, 06/2017, A5E34647946-AD
0 m
40 m device: 0 to 45 m, 100 m device: 0 to 105 m
A "distance window" centered on the echo is used to derive the reading.
When a new measurement is in the window, the window is re-centered and
the reading is calculated.
When the value is 0, the window is automatically calculated after each
measurement.
For slower Measurement Response values, the window grows at a
•
slower rate.
For faster Measurement Response values, the window grows at a faster
•
rate.
0 = OFF
0 to 255, greater = wider
Filters out echoes of a specific width.
To remove a false echo from the Echo Profile, take its width in mm and
multiply it by 0.006. Enter the result.
Example: to filter out a spike with 500 mm width, enter 6 or 7 (the closest
integer product of 500 x 0.006). When a value is keyed in, the nearest ac-
ceptable value is entered.
0 = OFF
0 to 255 samples, greater = wider (recommended: 10 samples)
Smooths jagged peaks in the echo profile. Reforms fragmented echoes into
one echo.
Parameter Reference
8.2 SETUP (2.)
125