Bernhardsgrütter, Ralf E.Ralf E.BernhardsgrütterHepp, Christoph J.Christoph J.HeppJägle, MartinMartinJäglePernau, Hans-FridtjofHans-FridtjofPernauSchmitt, KatrinKatrinSchmittWöllenstein, JürgenJürgenWöllenstein2022-03-142022-03-142020https://publica.fraunhofer.de/handle/publica/40818510.5162/SMSI2020/A5.2Quality monitoring of diesel exhaust fluid is crucial for optimal selective catalytic reduction in diesel combustion processes. This article presents a platinum thin film sensor using the 3o-method to characterize the diesel exhaust fluid. The results show that this sensor can determine the urea content with in 1 % by weight. An inline measurement is well applicable because the same structure can be used for both concentration and flow measurement.enDiesel Exhaust FluidAdBlue3-Omega Methodquality monitoringPlatinum Thin Film621conference paper