"If you are really using an LVDT, they are linear to the PPM level at least ! "

Yes correct. But I am not clear at the point you want to make ?

Dear Raghunathan,

he is meaning, that with such a linear sensor the value of Deg/MM of your list should be extremely constant. Also, it should not be necessary then to make a piece-wise linearization of your data, just a simple 'straight line' would be enough.

But he is forgetting some important point: Deg is NOT the sensor voltage representing linear movement of sensor, right? Relationship is as following:

Linear movement of sensor gives linear sensor voltage (MM). And this corresponds to the change of a certain angle (Deg), which is not linear with linear movement and so, not linear with MM.

Bye,
Kai