Various types of rheometers are available commercially in Brookfield each rheometer operates on a different principle such as rotation, creeping, relaxation, swinging, and so on. Most rheometers use the same geometry for measurement (cone, plate, parallel plate, concentric cylinder, etc.) and have a similar measurement range. Despite this, the design of each rheometer differs greatly. The stress-strain relationship of a material is measured with a rheometer to understand its flow/deformation properties. Rotational rheometers have some advantages over capillaries, including their ability to measure the rate of deformation and tension of shear using small samples of products, as well as their wide range of strain rates, which allows an analysis of time-dependent behavior. In capillary systems, fluid flows through tubes of circular cross section as a result of a pressure difference between their inlet and outlet, which may be generated by gravity or other mechanical means .The rotational system, on the other hand, is based on the cylindrical, conical, or circular body immersed in liquid that experiences a viscous resistance force when a rotational speed is applied. AMETEK Brookfield’s rheometers make viscosity measurements and viscoelastic measurements quick and easy.Ĭapillary systems and Rotational systems: The Brookfield Rheometer is the world’s most versatile platform for rheological measurements in wide range of applications. In a rheometer, the material of interest is placed in a geometric configuration, the environment around it is controlled, and stress, strain, and strain rate can be applied and measured. As a result, rheology is also known as the study of stress-strain relationships in materials. Under the influence of an external force, or stress, a body’s deformation and flow are measured as strain or strain rate, respectively. Rheometers are widely used to measure the rheological properties of fluids.

The study of flow and deformation of materials is known as rheology.

Viscosity test of cream maufacturing