How does a belt scale work?
A belt scale has a weighing frame attached to a conveyor belt. This setup helps maintain an accurate and steady flow of materials. The weighing frame supports the conveyor belt. It includes load cells, rollers, or idler pulleys on the load cells. A speed sensor is often mounted on the tail pulley of the conveyor belt.
STC S-type Load Cell Tension Compression Force Sensor Crane Load Cell
While the material moves on the conveyor, load cells measure the weight. The speed sensor collects data on speed and distance. The integrator processes this data. It often shows weight in pounds or kilograms per hour. The total weight is usually shown in tons.
The operator controls the material flow. This keeps a steady supply to the production line. The weighing frame links to
Calibrating belt scales
A certified weighing technician must check and adjust the material on a belt scale. They do this on a regular basis to ensure accurate weight measurements. They should follow the local weights and measures authority’s requirements. Run a zero point calibration every day. To do this, operate the conveyor belt while it’s empty. This checks the load cells and indicators without any weight on the scale.
STK Aluminum Alloy Strain Gauge Force Sensor
Material comparison calibration
To calibrate a belt scale for trade use, you must do a material comparison calibration. For this method, you need access to a certified scale, such as a truck scale or railway scale. We must weigh the material on the certified scale before or after weighing it on the belt scale.
Use enough material to run the belt scale for at least 10 minutes. You can also match the load at maximum flow rate within one turn of the belt. This will meet the local authorities’ requirements. You can change the belt scale’s range to match the certified vehicle scale. Just compare the material’s weight on both scales first.
STM Stainless Steel Tension Sensor Micro S-Type Force Sensor
Static test weight calibration
Static test weight calibration is the easiest way to calibrate belt scales. These scales are primarily used for tracking inventory or controlling systems. Belt scales require special calibration weights due to their unique construction. Some systems let you attach weights to the weighing frame for a long time. This way, you can use them on the load cells when needed. If your belt scale system doesn’t have this option, you need to use suspended weights. This helps check the load cells while the conveyor is off.
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Post time: Feb-28-2025
