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Page 28 of 44
Conveyor Belt Scale
Product Manual
iii. Test Weight Calibration
The
Test Weight Calibration
adjusts the
Trim Value
to properly calibrate the scale.
The calibration should be performed at startup and several times per year on a stationary conveyor. A
portable conveyor should be calibrated each time it is moved.
Hang the weights on the load cells assemblies.
Make sure the weights
can’t touch the belt or conveyor frame.
Test Bar and Weights
Insert the bar through the holes in the V-Block. The test weight amount must include the bar
or other hardware used to hang the weights from the load cells. If the bar weight is unknown,
place the bar on the scale first and perform the zero calibration. Then enter the exact weight
value for the calibration. At the end, remove the bar and do a second zero calibration.
Test Weight Calibration Notes:
▪
A test weight calibration is quick and easy but a repeatable material test is typically better than a
test weight calibration.
▪
Belt alignment and belt tension are extremely important. A scale can look properly
calibrated with test weights but may be inaccurate when running material if there are
problems with belt alignment or the belt is too tight.
Suggested test weight amounts by scale model:
Model 45 or 50
Model 100 or 150
Model 200
Model 350
Model 500
Model 1000
25-50 lbs.
50-100 lbs.
75-100 lbs.
100-200 lbs.
200+ lbs.
200+ lbs.
