摘要
系统地研究了安装在传输带上的透射式中子测水系统．用密度厚度之乘积（即面密度）进行补偿的办法，实现了无法整形的几何不连续、不规则的运动物料中质量分数湿度的在线测量．对质量分数湿度在６％～１６％的黄河洗砂的测量表明，当料厚在２～１６ｃｍ范围内，质量分数湿度测量的误差在±２．５％以内．如果对运动着的一块一块物料的测量结果作长时间的厚度加权统计平均。
The neutron measuring transmission moisture system on the conveyer belt is systematically studied. A method of density and thickness compensation has been used to carryout the on line measurements of the moisture of the unshaped, discontinuous and irregular moving matter . At the same time, the thickness weighed average method is employed to modify the prompt moisture at a fixed time, and to improve the accuracy of measuring the moisture.The experimental data show that the measurement errors are within ±2.5% when the thickness is between 2cm and 16cm and the water percentage is between 6%and 16%. The errors can reach 0.2% if thickness weighed average for moving matter lasts for a long time.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
1999年第2期89-92,共4页
Journal of Lanzhou University(Natural Sciences)
基金
甘肃省自然科学基金
关键词
中子测水系统
密度厚度补偿
在线测量
传输带
neutron measuring moisture system
transmission rubber belt
compensation factor of density and thickness
discontinuous and irregular moving matter
thickness weighed average method
on line measurement
