介绍了萃取工艺过程中有机相铀浓度在线分析仪的工作原理、构成、性能,以及浸入式探头、数据处理系统、检验标准器的研制特点。仪器经实验室长期模拟运行考核,性能稳定可靠,不受温度影响,抗干扰性强,样品测量重现性好。同一有机相样品连续四个月不停机监测,数据差别<±1％。根据所需测定范围,选择合适池长,精度可做到(100±1) The working principle, composition and performance of on-line analyzer for organic phase uranium concentration in the extraction process are introduced, as well as the research characteristics of immersion probe, data processing system and inspection standard instrument. Laboratory long-term simulation of the operation of the instrument, stable and reliable performance, not subject to temperature, strong anti-interference, good reproducibility of the sample measurement. The same organic sample for four consecutive months of non-stop monitoring, data differences <± 1%. According to the required measurement range, select the appropriate pool length, accuracy can be done (100 ± 1)