The viscometer is a direct-reading instrument for evaluating the rheological properties of fluids, Newtonian and Non- Newtonian. The test fluid is contained in the annular space or shear gap between the cylinders. Rotation of the outer cylinder at known velocities is accomplished through precision gearing.
The viscous drag exerted by the fluid creates a torque on the inner cylinder or bob. This torque is transmitted to a precision spring where its deflection is measured and then related to the test conditions and instrument contains.
The rotary speed of 3,6,100,200,300,600 RPM, the apparatus can measure all kinds of rheological parameter, draw flow curve according to the multi-point measure data, determine the flow pattern of liquid during flow behaviour, choose the proper formula and take the comparatively accurate measurement for Non-Newtonian fluids.