Chapter 5 – Configuration
Hardy H6800 Series Application Controllers User Guide
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5.6.3 Performing MultiPoint Calibration
Path:
Home screen > Operation Menu > Calibration > MultiPoint Cal
MultiPoint calibration lets you calibrate using three, four, or five points. Compared to a two-
point calibration, a multipoint calibration allows you to calibrate non-linearity significantly
more accurately.
To achieve the best possible accuracy, multipoint calibration should cover the entire range of
the desired measurement values (from zero to the highest possible value). Perform each
calibration step by step starting at Cal Point 1 and then going to the next point weight (Cal
Point 2) and then Cal Point 3 until you reach your last selected point. The system will be
calibrated with multiple points, providing the most accurate method for non-linear calibration.
Parameter
Description
Tare
The value you enter allows you to avoid pushing the Tare button each time you weigh something.
Range: .000001 - 999999
Default: 0.0
Zero
Weight unit limit from zero that the application controller accepts as gross zero during the zeroing function
(when you push the Zero button).
Range: .000001 – 999999
Default: 10.0
Mode
Weight source to use as the set point input.
Range: Net, Gross
Default: Gross
Calibration Date
Date when the calibration is performed.
Num of Points
Number of Cal Points necessary to accommodate for non-linearity that cannot be mechanically corrected in the
system. Users you previously performed a calibration or set the span weight value using traditional or C2
calibration, will see that value populated as the highest number of Cal Points selected.
Point 1 Wt
Set the Cal Point 1 value necessary to accommodate for non-linearity that cannot be mechanically corrected in
the system. Press Do Point 1 Cal to conduct the calibration. If the calibration succeeds, the message Cal
Completed OK appears briefly; otherwise, an error message appears. For corrective actions, see Chapter 7.
Point 2 Wt
Set the Cal Point 2 value necessary to accommodate for non-linearity that cannot be mechanically corrected in
the system. Press Do Point 2 Cal to conduct the calibration. If the calibration succeeds, the message Cal
Completed OK appears briefly; otherwise, an error message appears. For corrective actions, see Chapter 7.
Point 3 Wt
Set the Cal Point 3 value necessary to accommodate for non-linearity that cannot be mechanically corrected in
the system. Press Do Point 3 Cal to conduct the calibration. If the calibration succeeds, the message Cal
Completed OK appears briefly; otherwise, an error message appears. For corrective actions, see Chapter 7.
