Hardy HI 6500 Series - Manual (Page 127)

Calibration 117
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Step 5. Press the DOWN button to select Span Weight, the current span weight will be
displayed. Press the ENTER button to modify the Span Weight value.
Step 6. To set the Span Weight, place a certified test weight, equal to the span weight
entered in step 5, on the scale. This value is the amount of test weight that you will
apply, typically 80-100% of the expected maximum product loading on the load
cells.
Step 7. Use the DOWN button to select Do Cal Hi, then press the ENTER button to set
the Cal High point and complete the calibration sequence. A "Cal Completed OK"
message appears briefly if the calibration is successful. An Error number appears
if the calibration fails. See the Error list in the Troubleshooting chapter for help
with error correction