Calibration Procedure - RDS Technology Weighlog 2 User Manual

Calibration and operation
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6 - Calibration
6.2

Calibration procedure

1.
Decide which attachment/commodity applies to which channel. Make a note
of this on the chart provided at the back of this manual.
2.
Decide whether static weighing or dynamic weighing is appropriate.
Select the appropriate channel and then select the weighing mode - "StAt" or
"dYn" (section 3.2).
3.
Start by setting the calibration factor to the maximum lift capacity of the
machine (e.g. if the lift capacity is 1.5 tons, then set the factor to 1.500).
4.
Set the zero weight (section 3.4).
5.
Fill the bucket with a typical load, the weight of which is known or can be
determined on a weighbridge or portable weigh scales.
NOTE:
If you are loading bags of known weight, ensure that they are evenly
distributed in the bucket (or on the pallet).
6.
Lift the bucket load a number of times and note the weight displayed each
time. Observe the procedures for accurate weighing (section 2.2). The
displayed weight should not vary by more than ±0.02 (20 kgs) or if in "USA"
display mode ±40 (lbs).
7.
If not already known, determine the true weight of the bucket load on the
weigh scales
8.
The actual calibration factor can now be determined by a simple calculation
using the true weight and the displayed weight as follows :
Correct factor = existing factor x
9.
Program the correct factor into the Weighlog (section 6.1.1).
10. Lift the load again several times, checking that the Weighlog reading is
correct.
12
true weight
Weighlog reading

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