Hall Effect Sensors Based Experiment to Study the Viscosity of a Fluid in Real-Time

The measurement of viscosity is a critical parameter in various fields such as engineering, physics, and medicine. Traditional methods of viscosity measurement often involve manual timers, which can be time-consuming and prone to errors. However, recent advancements in technology have led to the development of viscometers that offer improved accuracy, efficiency, and convenience. This research has led to the development of a digital falling-ball viscometer using Hall effect sensors and a microcontroller, the MicroLab Interface, as a data acquisition tool for measuring the viscosity of a liquid. To validate the digital viscometer, water was chosen as the test liquid due to the availability of its properties in the literature, including its viscosity value. The results show that the automatic detection method yields superior outcomes, with an accuracy of 98%. These precise measurements demonstrate the efficiency and reliability of the viscometer. Viscosity measurements were also conducted on glycerin, revealing a viscosity of 1,48 Pa.s. A comparative analysis was then performed with the conventional method, using a manual timer, resulting in a lower accuracy of 61,577%. This reaffirms the importance and reliability of viscosity measurement using the automatic detection method.