An electronic belt scale is widely used in industries like mining, cement, agriculture, and power generation for continuous and accurate measurement of bulk materials. To ensure its performance, conducting a material test is essential. This test verifies the weighing accuracy under actual operating conditions.
A material test checks whether the belt scale is measuring flow rates and total weights correctly when handling real materials. It's used for:
Initial calibration
Routine verification
Troubleshooting inaccurate readings
Without proper testing, errors can lead to production losses or incorrect billing.
Before starting, make sure:
The belt scale is properly installed and zeroed
The conveyor is running under normal load conditions
The material has consistent flow properties
A secondary reference (like a truck scale or static scale) is available for comparison
🟢 Tip: Always clean the belt and remove any debris to avoid interference.
Use a secondary scale (e.g., a truck scale or platform scale) to weigh a known quantity of the same material.
Convey the reference load through the belt scale system under normal conditions.
Compare the total weight shown on the belt scale with the actual weight from the reference scale.
Use the formula:
Error (%) = [(Belt Scale Reading − Reference Weight) ÷ Reference Weight] × 100%
If the error is beyond acceptable limits (typically ±0.5% or ±1%), recalibrate the scale accordingly.
Record all test results for auditing and quality control
Recalibrate the belt scale if needed, following manufacturer instructions
Schedule periodic material tests (e.g., quarterly) as part of preventive maintenance
Performing a material test on an electronic belt scale ensures accurate and reliable measurement of bulk materials. By following proper testing procedures, you can reduce errors, prevent losses, and maintain operational efficiency.