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Chapter 16: Load Controllers
Step 2: requires applying a known weight and entering
the data. Then the load cell amplifiers ‘Span’ (gain) is
adjusted till the digits turn green.
Software calculates the target figure based on full scale
being equal to the load cells rating and the target being
a portion of this based on the test weight you use.
Note: When calibrating, accuracy will suffer if a test
weight is used that is too low a percentage of the load
cells maximum scale, use a high a weight as practical.
You can add an extension to or lever above the load cell
mounting arm (called a ‘calibration arm’ in the industry)
so less actual weight is needed during calibration (i.e. it
acts as a lever to apply more effective weight onto the
load cell), but factor this in so you only enter the actual
weight applied to the load cell.
Step 3: asks to repeat the process to confirm. This is
because with a load cell amplifier adjusting Span will
effect Offset and vice versa.
Note: Please see your DTec Load Cell Amplifier
technical sheet if you are having trouble adjusting the
settings within range.
You can also alter your load cells entered rating figure
slightly if required to get the adjustments within range.
Step 4: asks you to press the ‘Save Calibration’ button.
It then loads the data into the sensor configuration
screen under a sensor called “Load Cell”.
It will automatically set the voltage that represents no
load and also set the torque that is represented by
5000mV
Tip- Press the “i” button you can see the data that will
be used by the software.
You can check the data if you like by using-
Torque = load (weight in Kg applied x 9.80665) x length
of torque arm in meter’s
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