Dynamic Viscosity is a measure of the resistance that the fluid offers to flow, but when it is subjected to a shear rate. The Vibrational Viscometer has two metallic blades that are immersed in the fluid, emitting very low frequency vibration waves. The energy absorbed by the fluid will depend on its viscosity and is accurately measured by electronic sensors and microprocessors.
Kinematic Viscosity is a measure of the resistance that a fluid offers to flow when using the effect of gravity. It is determined by measuring the time required for a fixed volume of fluid (200 ml) to flow into a volumetric flask at a controlled temperature (usually 40°C). The value is then compared with the viscosity value of the corresponding new oil.