Fann Viscometer 35
Fann Viscometer 35 is a true Couette coaxial cylinder rotational viscometer. In this viscometer, 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.

Fann Viscometer 35 is a true Couette coaxial cylinder rotational viscometer. In this viscometer, 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 constants

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