User's Manual

Page 88 SITRANS LR560 (mA/HART) – INSTRUCTION MANUAL 7ML19985KB01
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Parameters
2.7. Signal Processing
2.7.1. Near Range
The range in front of the device (measured from the sensor reference point)
within which any echoes will be ignored. This is sometimes referred to as
blanking or a dead zone.
2.7.2. Far Range
Allows the material level to drop below Low Calibration Point without
generating a Loss of Echo (LOE) state. See Sensor Mode (2.2.2.) on page 80 for
an illustration.
Use this feature if the measured surface can drop below the Low Cal. Point in
normal operation.
2.7.3. Echo select
2.7.3.1. Algorithm
Selects the algorithm to be applied to the echo profile to extract the true
echo.
Note: Default settings in the parameter tables are indicated with an asterisk (*)
unless explicitly stated.
Values
Range: 0 to 105 m (0 to 344.5 ft)
Default: 0.278 m (0.91 ft)
Related
parameters
Units (2.2.1.)
Note: Far Range can extend beyond the bottom of the vessel.
Values
Range: Min. = Low Calibration Pt.
Max. = 105 m (344.5 ft)
Default: Value for Low Calibration Pt. + 5 m (16.4 ft)
Related
parameters
Units (2.2.1.)
CLEF Range (2.7.3.4.)
Options
ALF Area Largest First
AEcho Area
LLargest Echo
*FFirst Echo
AL Echo Area Largest
AF Echo Area First
LF Echo Largest First
BLF Best of First and Largest echo
BL Best Largest Echo
BF Best First Echo
LAST
TF True First Echo