一种低温漂高精度平衡指示仪的研制

Research on low temperature floating andhigh precision balance type indicator

在需要灵敏检测微弱电流的场合 ,传统方法通常是用光电式检流计来测量。但这种检流计存在对工作现场要求高、价格昂贵和易损坏等缺点 ,本文介绍一种测量精度达 1 0 - 9A量级的磁电式平衡指示仪的研制 ,并在文中详细地给出了该仪器的工作原理分析和设计要求 ,该平衡指示仪能完全解决传统方法所存在的问题。

In situations where sensitive measuring of faintness current is needed, the traditional way is to use photoelectric microdetectors. But there are disadvantages are they are expensive and damageable. In this paper, a kind of high sensitivity magnetoelectric balance type indicator (its measurement precision ≥ 10+{-9}A) is introduced and its working and designing principles are given. Problems of the traditional method can be solved in this way.