Hi,
I meant you can use ice and boiling water as two test points, and room temperature as the third in the middle. This allows you to get three readings for the calculation.
Yes thermistors are non linear, but they are somewhat linearized quite easily over a smaller range, and using them for temperature setting (rather than measurement) using analog comparator techniques takes the non linearity right out of them. So the inherent non linearity would not bother me in the least
Using a microcontroller also makes short work of the linearization too if that's what you prefer.
I meant you can use ice and boiling water as two test points, and room temperature as the third in the middle. This allows you to get three readings for the calculation.
Yes thermistors are non linear, but they are somewhat linearized quite easily over a smaller range, and using them for temperature setting (rather than measurement) using analog comparator techniques takes the non linearity right out of them. So the inherent non linearity would not bother me in the least
Using a microcontroller also makes short work of the linearization too if that's what you prefer.