Various optional cone rotors are available depending on the viscosity value of the sample to be measured.
In contrast to the 1°34′ x R24 cone rotor that comes standard, the 3° cone is for measuring higher viscosity samples, and the 0.8° cone is for measuring lower viscosity samples. Choose.
Also, since some “3° cones” have small diameters, the higher the viscosity, the smaller the diameter of the cone rotor selected.
The cone-plate viscometer is a viscometer that can specify the “shear rate”, but the shear rate is determined by the shear rate coefficient and rotation speed of the cone rotor used.
Shear rate = Shear rate factor × Rotational speed
The shear rate coefficient varies depending on the angle of the cone rotor as shown below.
（Independent of cone rotor diameter）
|Cone rotor angle
|Shear rate factor
Cone rotor type
Please note that the required sample volume varies depending on the angle and diameter of the cone rotor.