Low-cost multifunctional sensorsystem for online determination of aqueous solutions

Online-determination of aqueous solutions can be used in many different applications e.g. for the monitoring and controlling of a complete washing process. During this process different water and suds parameters must be measured continuously and used to control and optimize the washing process. Current methods use complex or sensitive sensor elements or expensive bulk or surface materials to determine liquids. Different parameters in the liquid need different special sensors and make the complete system complex and expensive. The new smart low-cost sensor system was developed to measure online all necessary parameters of liquids. The hardware of this sensor system with the combination of the measurement methods impedance spectroscopy and cyclic voltammetry can be used for different applications. The software must be adapted individually and makes the system very flexible and keep the cost low.