一、前言自动平衡显示仪表(以下简称显示仪)是一种应用十分广泛的工业计量仪器,它配上相应的传感器可进行温度、压力、流量、液位与成分分析等热工参数的测量。在实际的工程测量中,当显示仪与传感器配套后的基本误差合成起来时,是一项不可忽视的误差。例如:由 I. INTRODUCTION Automatic balancing display instrument (hereinafter referred to as display instrument) is a kind of industrial measuring instrument with a wide range of applications. It can measure the thermal parameters such as temperature, pressure, flow rate, liquid level and composition analysis with the corresponding sensors. In the actual engineering measurement, when the display and sensor supporting the basic error after synthesis, it is an error can not be ignored. For example: from