The automatic centering device for large mass comparator weights is based on the principles of"grid exchange"and"roller guide rail matching",which solves the problems of eccentric load error and data drift caused by large weighing pan area and long loading time.The performance and error sources of the device were analyzed from three aspects:initial offset distance,maximum allowable deflection angle and centering error.According to JJF 1326-2011,the device was calibrated for repeatability,eccentric load error and local indication error.By comparing the data before and after the installation of the device,the effectiveness of the device was verified and the measurement quality was improved.accuracy and stability.
关键词
大质量比较仪/砝码/自动定心装置
Key words
large mass comparator/weight/automatic centering device
维普
万方数据