What are the advantages of online automatic calibration for electronic belt scales compared to traditional calibration methods?

Electronic belt scales are widely used dynamic weighing instruments in the field of industrial bulk material automatic weighing.

The actual application accuracy and stability of a belt scale are not only determined by its own quality and performance but are also closely related to its installation, debugging, and calibration work. The installation of a belt scale is a one-time task; generally, as long as the installation personnel have sufficient technical experience and strictly follow the installation steps, norms, and methods, there will not be significant issues.

However, operation, maintenance, and calibration are long-term tasks. Accurate and timely calibration is an essential measure to maintain the application accuracy of belt scales.

Physical calibration and simulated calibration are the two traditional calibration methods for electronic belt scales.

1. Physical Calibration: This method involves weighing the material to be measured by the belt scale using a static scale beforehand or afterward, and then weighing it with the belt scale. The error is calculated by comparing the weighing results of the belt scale with those of the static scale.

This calibration method requires a significant amount of manpower, mechanical equipment, and is costly, with a large operational workload. Generally, calibration needs to be repeated multiple times and is time-consuming.

2. Simulated Calibration: During simulated calibration, a separate standard weight or chain code can be used to apply force to the belt scale, simulating different load conditions while the belt is idling, to perform the calibration.

This calibration method is easy to implement and requires less manpower and mechanical equipment. However, its drawbacks are also evident; it cannot overcome the influence of the scale frame and belt tension on the calibration, resulting in low accuracy and reliability.

Compared to traditional calibration methods, online automatic calibration for electronic belt scales, as a dynamic, real-time, highly accurate, highly stable, and easily implementable automated calibration method, has distinct advantages:

1. Real-time Performance: Online automatic calibration can be performed in real-time while the belt scale is in operation, without the need to stop the machine, halt material conveyance, or idle the belt. Additionally, this calibration method enables real-time monitoring and adjustment, allowing for timely calibration of the weighing equipment over time to ensure the accuracy of weighing data.

2. Accuracy: Traditional periodic calibration may not capture changes in the equipment during use, whereas online automatic calibration can dynamically adjust based on actual operating conditions.

Once a measurement error is detected, it automatically and promptly calibrates, improving the accuracy of the weighing system. Moreover, automatic calibration is performed while the material is in actual operation, with a non-simulated force state, resulting in higher calibration accuracy.

3. Improved Calibration Efficiency: Online automatic calibration can automatically adjust the weighing equipment without manual intervention, improving calibration efficiency and reducing the possibility of human error.

4. Cost Savings: Traditional calibration methods require shutdown operations, affecting production efficiency. Online automatic calibration can be completed without stopping the production line, reducing downtime and avoiding energy waste caused by idling the belt conveyor, thus saving maintenance costs.

5. Online and Remote Monitoring: The online automatic calibration system has real-time online monitoring capabilities. Once the system operates abnormally, it can promptly detect and resolve issues, facilitating calibration and management.

In summary, online automatic calibration for electronic belt scales offers timely, automated, dynamic real-time calibration, high accuracy, low cost, energy efficiency, high efficiency, and does not affect production continuity compared to traditional calibration methods. This effectively enhances the accuracy and stability of the weighing system, improves production efficiency, and reduces production costs.