5 - Calibration
Page 11
5.3 Calibration Procedure
1. Decide which attachment or product applies to which channel. This can be
noted on the chart provided at the back of this manual.
2. Decide whether Dynamic or Static weighing will be used. Select the desired
channel and set to correct weighing mode (Section 3.3).
3. Start by setting the calibration factor to the maximum lift capacity of the loader.
Example: If the lift capacity is 2 tons then set the factor to 2.0.
4. Set the zero weight if not already done (Section 4.2).
5. Fill the bucket with a typical load, the weight of which is known or can be
determined with a scale.
Important: The best accuracy will be achieved by using a load that is at
least 75% of the capacity of the machine. Using only a couple hundred
pounds will result in a poor calibration.
6. Lift the bucket or forks a few times
,
not
ing
the weight displayed each time.
Be sure to follow proper lifting procedures and roll bucket back before each
lift is made. The weight displayed should not vary by more than + or - 40lbs.
7. If not already know
n,
determine the true weight of the load in the bucket.
8. The actual calibration factor can now be determined by a simple calculation
using the known weight and the weight displayed as follows:
Correct Factor = Existing Factor x True Weight
Weighlog Reading
9. Program the correct factor into the Weighlog (Section 5.2).
10. Lift the load again several times, checking the weight reading is correct and
repeats within tolerances.
11. The weight reading can be fine tuned if need by adjusting the calibration
number. Raise the number to make the scale read heavier and lower the
number to make the scale read lighter. Keep in mind the scale rounds to
nearest 10 lbs.