Henning Bernd, Rautenberg Jens
University of Paderborn, Faculty of Computer Science, Electrical Engineering and Mathematics, Department of Electrical Engineering and Information Technology, Electrical Measurement Techniques, Paderborn, Germany.
Ultrasonics. 2006 Dec 22;44 Suppl 1:e1395-9. doi: 10.1016/j.ultras.2006.05.048. Epub 2006 Jun 5.
Continuous in-line measurement of substance concentration in liquid mixtures is valuable in improving industrial processes in terms of material properties, energy efficiency and process safety. Ultrasonic sensor systems meet the practical requirements of a chemical sensor quite well. Currently ultrasonic sensor systems are widely used as acoustic chemical sensors to measure concentration of selected substances or to monitor the course of polymerisation, crystallisation or fermentation processes. Useable acoustic properties for the characterisation of liquid mixtures are sound velocity, sound absorption and acoustic impedance. This contribution will give a short overview of the state of the art and several trends for the use of ultrasonic sensor systems in process applications. Novel investigations show the very promising possibility to analyse liquid multi-phase mixtures like suspensions, emulsions and dispersions.
连续在线测量液体混合物中的物质浓度对于改善工业过程在材料特性、能源效率和过程安全方面具有重要价值。超声传感器系统很好地满足了化学传感器的实际要求。目前，超声传感器系统作为声学化学传感器被广泛用于测量特定物质的浓度或监测聚合、结晶或发酵过程的进程。用于表征液体混合物的可用声学特性有声速、声吸收和声阻抗。本文将简要概述超声传感器系统在过程应用中的技术现状和若干发展趋势。新的研究表明，分析悬浮液、乳液和分散液等液体多相混合物具有非常广阔的前景。
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