Honeywell SLG 700 Option Manual page 69

Parameter Name
ECHO_CURVE
WINDOW_COUNT
WINDOW_START
WINDOW_DATA_SIZE
ECHO_CURVE_TYPE
ECHOCURVE_ST_DIST
ECHOCURVE_END_DIST
ECHOCURVE_RESOLUTION
ECHO_UNIT
REFERENCE_REFL_ST_CT
REFERENCE_REFL_MODEL_WT
REFERENCE_REFL_MODEL_GAIN
REFERENCE_REFL_MODEL_ATTEN
REFERENCE_OBJ_FUN_THRESHOLD
Rev.5
Read only. Echo curve data
Used for Echo curve
Used for Echo curve
Used for Echo curve
Windowed Echo Curve: Used by the algorithm to find
level measurements. Surface and Interface windows are
tracking surface level and interface level respectively.
Background subtraction near the reference plane is
applied when needed. It is useful for troubleshooting the
correlation algorithm.
Full Echo Curve: The full "raw" echo curve, i.e. not
windowed and no background removal or other
processing done to it. Useful for troubleshooting process.
Processed (Full) Echo Curve: Echo curve with
background removal. Useful for troubleshooting process
or the correlation algorithm.
Background Subtraction Array: This array contains the
echo curve in the reference plane region when the
surface level is far from the reference plane. This array
can then be subtracted from the echo curve to improve
near zone performance.
Distance from reference to begin the curve.
Distance from reference to end the curve.
Distance between samples on the curve. Lower number
results in more detail but takes longer to process.
Units of distance on curve:
Ft
m
in
cm
mm
Defines the start position (cm) of a 240cm wide search
window. This parameter is not used under normal
operation as the search window positions are
automatically updated by a level tracking algorithm.
Determines the width of the Reference wave where it
crosses the x axis (one half wavelength).
Amplitude (height) of the Reference wave shape.
The attenuation parameter governs how fast the sine
wave dies off. Increased attenuation results in smaller
side lobes.
If changing the gain does not help try increasing
threshold.
FOUNDATION Fieldbus Option User's Manual
Description
Page 53