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(The calculator on this site is for informative purposes only and we make no claims as to the accuracy, completeness or fitness for any particular purpose of the results produced by our calculators.
#Viscosity index calculator iso
The calculator on this site is for informative purposes only and we make no claims as to the accuracy, completeness or fitness for any particular purpose of the results produced by our calculators. Calculator for viscosity index (VI) according to ASTM D2270 and ISO 2909. NOTE In cases where kinematic viscosity data are not available at temperatures of 40 ☌ and 100 ☌, an estimate may be made of the viscosity index by calculating the kinematic viscosity at temperatures of 40 ☌ and 100 ☌ from data obtained at other. The calculator can be a useful tool for predicting viscosity at a target temperature, but keep in mind that in real world applications a theoretical viscosity value should always be verified with a viscosimeter. Equations are provided for calculating the viscosity index of petroleum products having kinematic viscosities above 70 mm 2 /s at 100 ☌. The viscosity at the target temperature is calculated when you click the 'calculate' button. This page allows the user to enter two temperature-viscosity points, and a target temperature. Lubricating oil producers normally publish the viscosity of their products at two different temperatures.
Given two known temperature-viscosity points, the viscosity of a liquid can be calculated for a target temperature. The viscosity of a liquid as a function of temperature can be approximated with the Andrade correlation.
Calculate the viscosity at a given temperature, when the viscosity is known at two temperatures.
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