核燃料后处理工艺中经常需要测量UO2(NO3)2和HNO3的浓度,通常采用密度-电导法。测量密度通常采用比重法,而电导则采用惠斯通电桥法。由于电极极易沾污、腐蚀,所以,目前还没有成功应用在在线分析中。为了解决这一问题,本工作密度测量采用U型管振荡法,电导率采用电磁感应无极电导测量技术。将软测量技术应用于系统实践中,建立了以铀浓度、酸度、密度、电导 It is often necessary to measure the concentrations of UO2 (NO3) 2 and HNO3 in nuclear fuel reprocessing processes, often using density-conductivity methods. The density is usually measured by the specific gravity method, and the conductivity is the Wheatstone bridge method. As the electrode is very easy to stain, corrosion, so, has not been successfully used in online analysis. In order to solve this problem, the working density measurement using U-tube oscillation method, the conductivity of the induction coil using electromagnetic induction Promise measurement technology. The soft-sensing technology is applied to the system practice, and a system of uranium concentration, acidity, density, conductance