天平是应用十分广泛的计量器具,为了确保其准确性。检定和调修至关重要,其中天平光学读数系统是天平非常重要的组成部分。光学天平开启后,投影屏上出现的微分标牌刻度影像应明亮、清晰、端正和移位平稳,没有时明时暗、模糊不清等现象,以保证能准确读数。现将产生天平光学读数系统的主要故障分析和调修说明如下: Balance is a widely used measuring instruments, in order to ensure its accuracy. Calibration and repair is essential, including balance reading system is an important part of the balance. After the optical balance is turned on, the differential signage scale image appearing on the projection screen should be bright, clear, straight and smooth and stable. There should be no phenomenon of darkness, ambiguity and so on, so as to ensure accurate reading. Now there will be a balance of optical reading system, the main failure analysis and repair instructions are as follows: