In China's value transfer system, weights occupy a very important position. They are not only important standards in the quality value system, but also serve as standard instruments to calibrate weighing instruments such as scales and balances. Weights are an important standard equipment to realize the transmission and traceability of quality values. Through calibration, existing problems can be found, analyzed and solved, and a consensus can be reached on the uncertainty analysis method in terms of quality measurement. In order to ensure the accuracy and uniformity of the values of the weights used, in accordance with the requirements of the metrological verification regulations JJG 99-2022 "Weights". Requirements, verification and verification are carried out to realize the transmission and traceability of values.

In order to improve the efficiency of weight verification, the automation of weight verification has attracted increasing attention in the field of metrology. In the existing weight verification and verification process, the standard weight and the tested weight are often manually added in turn.Load it onto the mass comparator and repeatedly place it on the comparator in the order of ABA or ABBA for measurement. If done manually for a For the measurement of certain specifications (20kg, 50kg), due to the equipment characteristics of the mass comparator, artificial measurement errors and safety hazards are prone to occur, which may lead to lower measurement accuracy. In this case, misreadings can easily occur due to repeated loading, resulting in lower measurement accuracy.
In addition, the manual loading method will inevitably cause surface wear and scratches on some weights, which will affect the measurement results and effectiveness. Rate. Therefore, an automatic weight calibration device studied in this article effectively reduces random errors in weight measurement and improves the weight capacity. Efficiency and accuracy of value transfer. It is important to design an efficient and accurate automatic weight verification device to solve the problems of low weight verification and verification efficiency and potential safety hazards in existing measurement activities.
significance.