Promtec Theisen presents a measuring technique for determining the concentration in liquid mixtures. This measurement is carried out using microwaves and has an average standard deviation of just ±0.1 to 0.2% from the corresponding laboratory results. According to the manufacturer, microwave measurement technology can help to prevent failures and better regulate production processes through inline monitoring. A microwave oscillator that generates electromagnetic waves with a frequency of 2.45 GHz is used to achieve the accuracy. This signal can be transmitted via a sensor through any water-containing medium located in a fixed measuring geometry such as a pipe or tank. As microwaves propagate in the form of fields, the measuring devices achieve significantly more accurate measurement results compared to other technologies such as optical, electrical and mechanical measuring methods, according to the supplier. At the same time, the medium to be measured is not affected. There are two different versions to choose from, depending on the user and area of application: 'µ-ICC 2.45 Standard' or 'µ-ICC 2.45 Compact'. The standard device is a four-channel measuring system and therefore the more cost-effective variant for several measuring points, whereas the compact device was designed as a single-channel measuring system for individual applications.