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5−2−1For example, we will show the calibration procedures as follows, that is, 3 points of load
cells with 3 mV/V of rated output and 5 t of rated capacity.
Tare weight 1.5 t
Weighing capacity 5 t
Maximum display 5 000
1
Calculate the output of load cell at maximum display from the above conditions. Check that
the calculated value should be within the range from 0.4 mV/V to 3.1 mV/V. If the value is out
of the range, calibration can’t be executed.
（Output of load cell at maximum display）
(Rated output)＋(Rated output)＋(Rated output)
Number of load cells
3 mV/V＋3 mV/V＋3 mV/V
3 points
1 mV/V
×
Weighing capacity
(No. of load cells)×(Rated load)
×
5t
3 points×5t
＝
＝
＝
2
After making the load cell to the initial load condition (tare weight), execute the calibration
according to the paragraph 5−2−1. In this case, input “5000” in the step 6, and input “1.0000”
in the step 8 individually.
3
If necessity requires, apply zero/span fine adjustment according the paragraph 5−2−4, and
5−2−5.
(2) When the both conditions of load and the output of load cell are clarified.
(In case that required accuracy is more than 1/1 000 or so.)
Warning ● The accuracy obtained through the procedures of this calibration
consists from combined accuracy with the instrument and combined
strain gage applied transducer, the accuracy of weight used during the
calibration, error factors on mechanical and also error factors on
calibration works, that is, the total accuracy of these. If high accuracy
is required, full considerations should be made on each factor. If
neglected, there will be a case that desired accuracy may not be
obtained, so care should be taken fully.
When high accuracy is required, actual load calibration by using the weight and so on are
required.
For example, we’ll show the calibration procedures in the following conditions, that is, 3 points
of load cell with 3 mV/V of rated output and 5 t of rated capacity.
Tare weight 1.5 t
Weighing capacity 5 t
Maximum display 5 000
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