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1·This paper introduces the principle and structure of Model SSKJ molding sand moisture tester designed and made of authors 'own, and its application in sand preparation line.

介绍了自行设计和制造的SSKJ型砂水分自动控制仪的工作原理、结构以及在间歇式混砂机砂处理线上的应用。

2·The test results such as big error, bad stability and bad flexibility of domestic Y412 series raw cotton moisture tester that is designed by the resistance measuring moisture are analysed.

对以电阻法为设计原理的国产Y4 12系列原棉水分测试仪存在的测试结果误差大、稳定性差、通用性差等缺陷进行了分析。

3·The paper analysed the principle of RMS-7 fibre moisture regain tester and put forward the points for attention in operating according to the productive practising.

对RMS-7型回潮控制仪原理进行了分析，并根据生产实践提出了使用过程中的注意事项。