What are the methods for measuring in-line viscosity for the cosmetic and chemical industry? And how do I choose the right one?
But how do you know what the right in-line viscosity analyzer is for your process? After all, there are different analyzers on the market that use different measuring methods that can be used in-line in chemical and cosmetic processes.
There are various methods for an in-line viscosity measurement suitable for chemical and cosmetic processes, such as rotation, vibration and torsion. These methods are used for all types of liquids, pastes and slurries.
Vibration: A resonator is immersed in a liquid and the degree of damping from the liquid is measured to determine the viscosity. A bar is simply built into the process.
Torsion: in a torsional balance, the deflection is measured between two cylinders, the interior of which rotates at a fixed speed. The liquid to be measured is located in the annular (annular) space between the two cylinders
Rotation: A spindle (cylinder or disk) is immersed in the fluid to be examined and then the force that the spindle needs to overcome the inertia of the fluid is measured. The viscosity meter then determines the viscosity of the measuring liquid.
Rotational techniques are more bothered by process fluctuations or vibrations and flow changes. In addition, the technology is less easy to integrate into the process. Often the entire process needs to be adjusted to make an in-line measurement possible. The vibration technique is very accurate, can be easily integrated into the process (small, pin-shaped) and does not suffer from process vibrations or flow changes.
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