User's Manual

7ML19985LT01 SITRANS LR560 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 73
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Parameters
2.4.5.5. Echo Marker
The point on the primary echo on which the measured value is based.
Use this feature if the reported material level fluctuates slightly, due to a
variable rise in the leading edge of the true echo on the Echo Profile.
Enter the value (in percent of echo height) to ensure the Echo Lock
Window intersects the Echo Profile at the sharpest rising portion of the
Echo Profile representing the true echo. This value is preset to 70%.
2.4.6. Sampling
Provides a method of checking the reliability of a new echo before accepting it
as the valid reading, based on numbers of samples above or below the
currently selected echo.
2.4.6.1. Echo Lock
Selects the measurement verification process.
For radar applications, Material Agitator is the most often used setting, to
avoid agitator blade detection.
2.4.6.2. Sampling up
Specifies the number of consecutive echoes that must appear above the
echo currently selected, before the measurement is accepted as valid.
2.4.6.3. Sampling down
Specifies the number of consecutive echoes that must appear below the
echo currently selected, before the measurement is accepted as valid.
Values
Range: 5 to 95%
Default: 70%
Options
Lock Off (no verification)
Maximum Verification (not recommended for radar)
* Material Agitator
Total Lock (not recommended for radar)
Related
parameters
Fill Rate/Min (2.3.6.2.)
Empty rate/Min (2.3.6.3.)
Sampling up (2.4.6.2.)
Sampling down (2.4.6.3.)
Values
Range: 1 to 50
Default: 5
Values
Range: 1 to 50
Default: 2