its important for recover the calculation equation and for improve linearity equation (pears low )

This would keep the voltage across the inductance a constant, and corrects the non-linearity problem.

Limit of Linearity is the concentration at which the calibration curve departs from linearity by a specified amount. A deviation of approximately 5% is usually considered the upper limit. Common at higher concentrations.

Terminal linearity is when there is no flexibility allowed in the placement of the straight line in order to minimize the deviations ( or non-linearities). The straight line must be located so that each of its end points coincides with the device's upper and lower range values. This means that the non linearity measured will be larger than that measured by the independent linearity definitions.

When a function or given data set differes from a liniar curve fit. the difference between the data and a linear curve fit is your linearity error