HunterLab SpectraTrend HT, User Manual

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SpectraTrend HT User’s Guide 3.2
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For both PIECE and TIME MODES , height is given relative to the background. The default
setting for background is five inches from the sensor window. In PIECE MODE , a
continuous piece of product is assumed to be present if the measured height is within
the cutoff distance (for which the default setting is also five inches).
Figure 52. Run Configuration and Piece Mode
RUN CONFIGURATION: INTERVAL
Figure 0-53. Read Mode Intervals
If TIME is selected , set the MEASUREMENT INTEGRATION ( AVERAGING ) TIME . The
intervals are increased or decreased in 5 second steps by using the RIGHT ( INCREASE )
and LEFT ARROW key ( DECREASE ). The minimum interval is zero (maximum
measurement output approximately 1 reading per second) and the maximum interval is
60 seconds.
RUN CONFIGURATION: BELT DISTANCE
BELT DISTANCE is defined as the distance from the front surface of the sensor window
to the selected background (conveyor) position in the height units selected. However,
since the SpectraTrend HT measures height by detecting the angle of the light reflected
to the sensor, height is not measured absolutely, and all heights are relative. Therefore,
the background distance cannot be determined with a ruler. Instead, perform the
background height determination procedure using the
DISTANCE SENSOR in the
DIAGNOSTICS MENU and enter the value obtained as this parameter in the setup. The
default background distance is four inches (100 mm).