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我们曾为某矿山选矿车间做了一种“矿浆浓度计”,用来测定管道内水与矿石粉混合物中矿石粉的含量。整个测量仪表由电离室、弱电流放大器及显示部份组成。采用电离室做探头,比用光电倍增管和计数管来得稳定、寿命长,缺点是灵敏度低。为了提高灵敏度,在电离室内充较高气压的气体,增加电离室极板的片数,并采用较高原子序数的金属做电离室极板。本文仅对电离室结构特点做简单介绍。电离室结构示意图见图1。
An ionization chamber used in an ore-pulp-density gauge is presented. Its stability
sensitivity
plateau characteristic and the measures adopted in construction are briefly described.
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