RE: Blog #3: Characterising Thermistors – A Quick Primer, Beta Value & Steinhart-Hart Coefficients

shabaz — Thu, 04 Aug 2022 20:54:58 GMT

Hi Gough,

As I understand, the Steinhart-Hart method is accurate down to at least several thousandths of a degree, although proving that may be hard! Also it depends on obtaining very good coefficients of course, i.e. if the manufacturer provides good values for them or if one can calculate them, but that then requires the source data to be accurate.

It's annoying that some manufacturers do not provide them, leaving it up to the user to figure it out from typical values.

I don't have a reference to accuracy of S-H as a model. I'll try to find where I located that information, but it would be surprising to see this large error (say tenths of a degree) if the coefficients are as good as they can be, for applying to S-H.

RE: Blog #3: Characterising Thermistors – A Quick Primer, Beta Value & Steinhart-Hart Coefficients

javagoza — Thu, 04 Aug 2022 14:15:50 GMT

Lots of information and very well documented, thanks. Very interesting. It seems strange to me that at this point in the 21st century, thermistor manufacturers do not supply predictive models based on neural networks.