How to calculate the real value of Beta for your actual thermistor - including a spreadsheet - and an explanation of the maths involved.
COMMENTS Homer SUGGESTIONS

How To Find An Expression For Beta

MORE THERMISTOR PROJECTS

How To Use
The Spreadsheet
The Rest of Ron's Circuits Write To Ron More Free-to-Use Circuits Circuit Exchange International


To predict Thermistor Resistance - the spreadsheet needs an expression for eta. This expression is derived from the formula for R2 published in the data sheets. How the formula for R2 becomes a formula for eta - is explained below.


Formula To Calculate The Temperature 
Constant Of A Thermistor


  Where: -

  1. R1 is the resistance in ohms at t1 (K)
  2. R2 is the resistance in ohms at t2 (K)
  3. is the temperature constant
  4. Deg K = Deg C + 273
  5. e = 2.7184


How To Predict The Resistance Of A Thermistor At A Specific Temperature

Download
Spreadsheet   (80k)
The Rest of Ron's Circuits Write To Ron More Free-to-Use Circuits Circuit Exchange International