Simple measuring system for impedance spectroscopy analysis of fluids

The use of impedance spectroscopy makes it possible to identify different substances based on their different fingerprint. In industrial applications, impedance spectroscopy has the potential to monitor processes. It is a technique of simple implementation, low cost and minimally invasive. In this study, a system based on electrical impedance spectroscopy was developed, calibrated and validated. The system comprises a sensing cell, an electronics and data processing algorithms for data extraction. The system was implemented and evaluated by measuring known substances, showing promising first results. As an example of application, the ice formation process under controlled conditions was monitored. The results show the capability of the developed system to monitor processes via impedance spectroscopy.