本文论述了乳化液浓度自动检测配比系统。文章给出了阻容型浓度、液位传感器的原理、结构和测试电路，以及实现乳化液浓度自动检测与自动配比的系统硬件和软件。系统样机通过了型式试验、防爆试验和工业性试验。研究结果表明。本系统性能优良，达到煤矿监控产品技术标准，对提高煤矿机械自动化程度具有重要意义，推广应用前景广阔。 This article discusses the emulsion concentration automatic detection ratio system. The paper presents the principle, structure and test circuit of RCT, level sensor, as well as system hardware and software to realize the automatic detection and automatic ratio of emulsion concentration. System prototype passed the type test, explosion test and industrial test. Research indicates. The system performance is excellent, reaching the technical standards of coal mine monitoring products, to improve the degree of automation of coal mining machinery is of great significance, promote the use of broad prospects.