Concentration and Viscosity Measurements in Industrial Processes

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Anton Paar GmbH

TURCK GmbH

EagleBurgmann Germany GmbH & Co. KG

From Simplicity to Complexity

The concentration determination of two-component solutions is the most easily realized. Results are commonly quickly achieved with a single sensor, in a fairly straightforward workflow. The measurement task becomes more complex if there are reversal points in the measuring range. In such areas, the concentration cannot be determined with this measured physical parameter. Drawing from its extensive single sensor and sensor combination portfolio, Anton Paar can develop an alternative solution for these critical areas.

To determine the concentration of a three-component system, two physical parameters are measured that are differently influenced by the components. A combined density and sound velocity measurement has often proven a perfect solution in this regard, as well as density and conductivity or density and the refractive index. Concentration determinations have also considerably benefitted from an additional color measurement, for example.

A further task of the application team is the determination of viscosity in the process — both of Newtonian and of Non-Newtonian fluids. Most organic and inorganic liquids or solutions with low molecular weight show Newtonian flow behavior and can often be measured without any further application development.

However, experience has shown that many substances of importance in several industries, such as emulsions, suspensions and polymer melts, do not show Newtonian flow behavior. In fact, this behavior is rather the exception than the rule. These challenges are met head on and solved with the Anton Paar application team’s know-how.

Four case studies demonstrating this know-how are covered on the next page.

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