This paper introduces the principle and structure of Model SSKJ molding sand moisturetester designed and made of authors 'own, and its application in sand preparation line.
The test results such as big error, bad stability and bad flexibility of domestic Y412 series raw cotton moisturetester that is designed by the resistance measuring moisture are analysed.
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.