摘要
详细阐述了旋风分离式集沙仪的标定原理与标定系统的实现方法,并借助于移动式风蚀风洞对旋风分离式集沙仪进行了标定试验。结果表明,标定系数不随风洞中心风速、采样时间、试样种类的改变而变化,且集沙仪具有较高的稳定性,其值确定为5.08‰。
This paper expatiates the calibration principle of the whirl type separation sand sampler and the method of realizing the calibration system. The calibration experiment was carried out by means of the movable wind erosion tunnel. The results show that the calibration coefficient does not vary whit the changing of centric velocity of the tunnel, sampling time and type of soil sample. The whirl type separation sand sampler has a very good stability. Its amount was ascertained as 5.08‰.
出处
《农机化研究》
北大核心
2007年第4期95-98,共4页
Journal of Agricultural Mechanization Research
基金
国家自然科学基金项目(30260092)
关键词
土壤学
旋风分离式集沙仪
试验研究
标定
标定系数
agrology
whirl type separation sand sampler
experimental research
calibration
calibration coefficient
