Factors Affecting the Accuracy of Weighbridge Measurement

Electronic floor scales are commonly used basic measuring tools, especially with the development of national e-commerce trade, the significant increase in trade volume has brought new requirements for measuring efficiency and accuracy. Electronic floor scales are an upgrade from traditional floor scales, with significant advantages in terms of accuracy, measuring efficiency, and can meet the current requirements of measuring work. However, during the actual calibration process, the calibration results can be influenced by various factors, leading to varying degrees of errors in the final calibration results.

Factors of the floor scale itself

Floor scales are sophisticated measuring instruments, especially electronic floor scales, which include many precision components to ensure the effectiveness of measurement. It is precisely because of their complex construction that the actual operation of floor scales is easily affected by the overall system or partial performance in the actual usage process. For example, if there is minimal clearance between the limit bolts and the top plate, during the calibration process, as the load increases, the floor scale is prone to deformation, resulting in a change in the display reading when the top dead position occurs, momentarily exceeding the normal reading. If the platform is not flexible, it is often due to foreign objects obstructing the gap between the floor scale and the ramp, which can also lead to less accurate final readings.

Vague standards of mandatory calibration affect the accuracy of floor scales

The relevant regulations clearly state that in specific scenarios where floor scales are used, such as trade settlement, environmental monitoring, and medical health monitoring, mandatory calibration methods should be implemented. If the specific scenarios mentioned above do not apply, then mandatory calibration is not required. Non-mandatory calibration is generally carried out by the testing unit itself, while mandatory calibration is typically controlled by the quality supervision department and designates specific calibration agencies. In addition, mandatory calibration also has specific requirements for the calibration period, while non-mandatory calibration is planned by the testing unit itself. Although the mandatory calibration system ensures the implementation of necessary calibrations to a certain extent, the implementation of relevant standards and regulations is not strict enough, with unclear boundaries, resulting in a lack of authority in the overall calibration results.

Allowable tolerance for floor scale accuracy

Floor scale calibration is influenced by various factors, and the allowable tolerance and accuracy of the scale are key influencing factors. General calibration work is completed using traditional floor scale calibration accuracy grades, which is relatively simpler in terms of grade classification, resulting in the inability to meet the measurement accuracy requirements for some items that require high-precision measurements, such as metal items.

Furthermore, different types of equipment have different allowable tolerances, such as lever-type floor scales and electronic floor scales, making it difficult to standardize. Therefore, in the actual calibration process, it is likely that different equipment will provide different results, and there may be significant discrepancies.

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