氨气检测仪检定过程中进气模式的优化

Optimization of intake mode in the verification of ammonia detector

设计的不锈钢管路与三通切换球阀和三通针阀流量控制器组合的吹扫装置,管路和阀控经氮气和氨气吹扫后,其内的水分和杂质含量基本被消除。该装置解决了氨气易吸附于管路而造成的检定时间过长、测量结果重复性较差的问题,有利于提高氨气报警器检定结果的准确性。

The Stainless steel piping designed in this paper is combined with three-way ball valve and needle valve switch of purging device,pipe line.After the pipeline is purged by nitrogen and ammonia,the moisture and impurity content are basically eliminated.The device solves the problem of too long test time and poor repeatability of measurement which caused by ammonia adsorption pipeline,and is beneficial to improve the accuracy of verification results of ammonia alarm.