Continuous in-line measurement of viscosity using self-balancing electro-magnetically spinning technique

The electro-magnetically spinning method is applied for the continuous inline measurement of viscosity. To measure the confined space filled with a sample liquid, a cylinder-shaped rotor is proposed. By appropriately locating the position of the centers of mass and buoyancy, the probe automatically stands vertically in the sample tube. Frictional damage is also reduced by decreasing the apparent weight of the probe, thereby significantly improving the accuracy of the measured viscosity. The performance of the system is examined via successive measurements by changing the sample viscosity.