Operating Instructions

Table Of Contents
8.5.16.7 Filtering (2.2.4.3.)
Damping Filter (2.2.4.3.2.)
The time constant for the damping filter. The damping filter smooths out the response to a
sudden change in level. This is an exponential filter and the engineering unit is always in
seconds. See Damping (Page 156) for more detail.
Values Range: 0 to 1000 s
Default: 0 s
Narrow Echo Filter (2.2.4.3.6.)
Filters out echoes of a specific width.
Values Range: 0 to 255
0 = OFF
greater = wider
Related parameters Echo Confidence Long 2.2.4.3.7. Reform Echo (Page 85)
To remove a false echo from the Echo Profile, take its width in mm and multiply it by 0.013.
Enter the result. 
For example, to filter out a spike with 500 mm width, enter 6 or 7 (the closest integer product of
500 x 0.013). 
When a value is keyed in, the nearest acceptable value is entered.
Reform Echo (2.2.4.3.7.)
Smooths jagged peaks in the echo profile. Reforms fragmented echoes into one echo.
Values Set to 0 = OFF for liquid applications
greater = wider 
Range: 0 to 50 mS 
Recommended: 5 to 20 mS; higher is not recommended.
Related parameters 2.2.4.1.1. Algorithm  (Page 82)
2.2.4.3.6. Narrow Echo Filter (Page 85)
2.2.4.1.5. Echo Marker (Page 83)
Parameter reference
8.5 Setup (2.)
SITRANS LR260 with mA/HART
Operating Instructions, 11/2019, A5E32337683-AD 85