Chapter 5 – Setting Scale Parameters
Hardy Process Solutions HI 6200 Weigh Processor User Guide
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5.2.5 Auto Zero Tolerance
When Auto Zero Tolerance is entered and Auto Zero Tracking is enabled, any weight within
the entered tolerance of zero and not in motion causes the display to read zero
automatically.
The amount of weight zeroed off is cumulative. The auto zero command does not run if the
current gross weight plus any previously zeroed amount exceeds the zero tolerance or if the
scale is in motion.
5.2.6 Number of Averages
Number of Averages sets the number of weight readings used to compute the displayed
weight. The average is a sliding average so that a new average reading is available for
display at every reading. Setting a very high Number of Averages AND a high
WAVERSAVER setting may slow system performance.
5.2.7 Span Weight
Span Weight is a calibration high reference point derived from an actual measured weight.
Do not confuse Span Weight with the Scale Capacity. If you place a 100 pound weight on
the scale, the Span Weight would be 100 pounds.
5.2.8 Ref Weight
Ref Weight is a calibration low or C2 Cal reference point derived from an actual measured
weight, normally zero.
5.2.9 Gravity Correction
Objects weigh about 0.5% less at the equator than they weigh at each pole because the
force of gravity is less at the equator than at the poles. An object weighing 100 pounds at the
North Pole on a spring scale, for example, weighs 99.65 pounds at the equator. Depending
on the latitude of your location, your scales measure in between.
Table 5-1 shows the gravitation correction factor for a few cities around the world.
Note:
Make sure the scale system is clean and ready to receive product. This step
establishes the gross zero reference. You must perform a C2 calibration after
setting the Gravity Correction; otherwise, the correction factor will not work.
In general, if your location is between the 45th parallel and the equator, gravity correction is
greater than 1.0. For example, you add 1.0006 for an error that is .06% because gravity is
