１．引言温度是工业生产中的重要参数，８０年代以前，我国对温度的测量显示大多使用动圈式仪表。这类仪表由于分辨率低，抗震性差以及存在视差和读数误差等缺点往往不能胜任对温度测量要求准确的场合，８０年代起逐渐采用３－１／２位Ａ／Ｄ转换器为核心部件来制造测量仪... 1. Introduction Temperature is an important parameter in industrial production. Before the 1980s, the measurement of temperature in China showed that most of them used moving-coil instruments. Such instruments due to low resolution, poor seismic resistance and the existence of parallax and reading errors and other shortcomings often can not be qualified for temperature measurement accuracy occasion, since the 80’s gradually 3-1 / 2-bit A / D converter as the core components to manufacture Measuring instrument...