Measuring temperature with KTY81

[petr b]

Hi, I have at home thermisotr KTY81 and I would like to measure temperature with UNO and labview. I know if I connect it like voltage divider, I can calculate resistance. But temperature isnt directly proportional to resistance. How to do it in labview?

thanks

[petr b]

I found that there is solution in examples, but there is mistake in formula, it should look like this:

[Kristoff2]

From Voltage Divider on Wikipedia

              

Where:

R1 = Thermistor

R2 = Paired Resistance

Vin= Vcc

Vout = Analog Read Output

I think it is correct as written for the circuit diagram provided on the block diagram (they grey circle component is the thermistor).

Petrb's solution is the inverse of my original calculation and would make sense if you swapped the Thermistor and the Paired resistor.

Does this make sense?

-Sam K

[petr b]

Yes of course you are right, I dont look on schema, thanks