ChemInstruments COF-1000 Operating Instructions Manual page 8

The calibration sequence defaults to grams as the unit of measure. Make
sure that your calibration weights and entries are in grams.
LOAD CELL CALIBRATION PROCEDURE
1. Simultaneously press the Up and Down Arrow keys for 3 seconds to access the
Setup mode.
2. Use the Up Arrow key to cycle to "Load Cell Setup" on the display. Press the
Enter button.
3. At the "LO CAL" display, determine the Low Offset Value desired (typically 0.00).
Make sure that you do not have a weight hanging, and press the Enter key. The
display will change to "HI CAL" for high calibration value.
4. At the "HI CAL" display select a calibration weight close to the maximum
expected test value. Hang that weight using the calibration cable and pulley.
5. Set the High Offset Value on the Display to correspond with the selected
calibration weight. You can change the displayed value by pressing the Up and
Down Arrow keys.
6. Verify that the hanging weight is completely at rest without any movement. Press
the Enter key to complete calibration. The display will change to the "INSTANT
FORCE" mode showing the current reading of force.
7. Verify the calibration by hanging a different calibration weight. Confirm that
the instantaneous force reading is the same as the selected weight hanging on
the calibration wire and pulley.
Coefficient of Friction Tester Operating Instructions (COF-1000)
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