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### thermistor program

foxly Oct 7, 2011 01:17 AM

Hi,Campbell sir

We have thermistor and CR1000.
How Equipment installation and program?

thank.

thermistor date
(Resistance R)--(Temperature Y)
62914.65----------- 20
50000 --------------25
39929.51------------30
32037.72------------35
25823.38------------40
20906.99------------45

* Last updated by: foxly on 10/7/2011 @ 1:18 AM *

Nico Oct 10, 2011 11:25 PM

Do you got the coefficients for that thermistor (A,B,C) so you can use the Steinhart-Hart equation with the voltages that should come out of a measurement with that thermistor?
See datasheet for Soil Temp Probe 107 for example (page 9).

For even better help, post the type/name of that thermistor you got there.

aps Oct 12, 2011 05:55 AM

If you cannot find the Steinhart-Hart parameters please give resistance vs temperature for the lowest and highest temperatures you are interested in plus the resistance for the temperature half way between the extremes.

daveb1997 Jul 16, 2020 11:36 PM

I have a 2008 STM2500 dual sensor.

They publish the thermistor R at:

-15C = 71172

25C = 10000

65C = 2128

How does one calculate the Steinhart-Hart parameters from this?