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This paper presents an approach for wireless real-time measurements of dynamic viscosity in the range of 50-1000 mPa&#x00B7;s utilising a laboratory hotplate in conjunction with the Smart Stirrer device. The Smart Stirrer, an innovative tool resembling a conventional magnetic stirrer enhanced with embedded System-on-Chip (SoC) Bluetooth Low Energy (BLE) module, inertial measurement unit (IMU) and magnetometer sensors, serving as a platform for viscosity monitoring. The principle of measurement based on the interaction between the magnetic field of the hotplate&#x2019;s magnet and the Smart Stirrer&#x2019;s internal magnets, with variations in a liquid viscosity impacting the rotational dynamics of the Stirrer and measured by the sensors. The paper details the experimental setup, data acquisition, and analysis procedures, demonstrating the capability of the system to accurately and non-invasively measure the viscosity of various liquid solutions in real-time. The method addresses the practical limitations of existing methods and offers a integrative approach for monitoring  in-situ  rheological properties in laboratory settings. It stands out for its simplicity, ease of integration, and potential for broader applications, making it a valuable tool in various fields requiring fluid property measurements.

Real-Time Rheological Monitoring with the Smart Stirrer