Temperature compensation

temperature compensation

Calculation of reference temperature for viscosity

The sensor calculate the viscosity at the reference temperature through the simultaneous measurements of viscosity and temperature in the process:

ηReference temperature = f(ηProcess temperature, Τprocess )

This calculation, called temperature compensation, is possible when data about the influence of temperature on a reference product; with a behavior close to the measured product are available. This data can be in the form of a table, a curve or an equation.

The accuracy of the temperature-compensated viscosity extrapolation naturally depends on the accuracy of the data, the difference in behavior between the reference product and the actual product, and the difference between the process and reference temperatures. For petroleum products, whose behavior can be described using the mathematical relationships of ASTM D 341-93, temperature compensation gives very good results.

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