Knowledge Base
What are the main types of viscometer?
Get to grips with the main different types of viscometer out there and make sure you know which one might suit your test and measurement solution, with our handy guide.
What is a viscometer?
A viscometer is a device for measuring the viscosity of a sample. It is widely used for checking the viscosity of paint, coatings, inks and all sorts of liquids and gels. For more details on testing viscosity, check out our guide to measuring viscosity.
The most commonly used viscometers
The most commonly used varieties include:
Rotational viscometer
A rotational viscometer is a device that allows you to work out the viscosity of a sample by rotating a spindle in a cup. They measure the torque on the vertical stand that is moving the spindle in a rotational direction. The size of the cup can be changed.
Rotational viscometers are commonly used to measure the viscosity of everything from paint to starch solutions. The type of rotational viscosity machine used varies from industry to industry. For paints and coatings, KREBS models are particularly popular.
Cone and plate viscometer
Cone and plate viscometers work by placing liquid on a horizontal plate and then a shallow cone is placed into it. Normally, the plate is then rotated and the shear stress (from the torque) and shear rate (from the angular velocity) are measured then used to calculate the viscosity. It is a standard test for dynamic viscosity measurement that is used for testing non-Newtonian fluids. It is often used for measuring the viscosity of resins and gels, and is employed across a wide range of industries.
Digital viscometer
A digital viscometer is a way of very accurately recording measurements of viscosity. It uses a rotating inner cylinder and an outer cylinder to determine a liquid’s viscosity. The sample is placed in the outer cylinder and the inner cylinder is rotated and the effect on its torque caused by the liquid in the outer cylinder offers a way to measure the sample’s viscosity.
Digital viscometers can be used to measure everything from the viscosity of blood to petroleum or paints.
Interested in finding out more about our full range of viscometers? Be sure to have a browse of our viscosity testing solutions.
Finding the right viscometer with Industrial Physics
Not all viscometers are suitable for all jobs and at Industrial Physics, we have all the know-how needed to help you find the right make and model for your specific set up. With almost 100 years of experience and expertise in a wide range of industries, we’re ready to offer advice from everything to selecting a machine to giving you follow up training and support once it’s been installed. Find out more by getting in touch.
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FAQs
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A viscometer is an instrument used to measure the viscosity of fluids.
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: Types include capillary, rotational, and falling ball viscometers, each suited for different applications.
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Viscosity is tested using viscometers, which measure the flow rate of a fluid under controlled conditions.
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