由省机械工业研究所和双城分析仪器厂联合设计、研制的钢中三元素(Si、Mn、P)自动分析仪于1979年 9月组装调试成功。该仪器采用晶体管逻辑线路程序控制、以定容加液方式进行自动加液。由于分析方法合理、可靠,分析数据的重现性、稳定性、准确度都达到国家标准规定的公差范围。该仪器不仅能进行三元素的自动分析 The three-element (Si, Mn, P) automatic analyzer for steel, jointly designed and developed by the Provincial Institute of Machinery Industry and Shuangcheng Analytical Instrument Factory, was successfully assembled and commissioned in September 1979. The instrument uses transistor logic program control to constant volume plus liquid way to automatically add liquid. Because the analysis method is reasonable and reliable, the reproducibility, stability and accuracy of the analysis data reach the tolerance range stipulated by the national standard. The instrument can not only automatic analysis of three elements