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510-Termistors-Testing_Calibration.JPG
 
© Paolo Musante
Credit Paolo Musante

510-Termistors-Testing_Calibration.JPG


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Paolo Musante

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© Paolo Musante

From the album:

Instrument Cluster Rebuilds

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Taken with Canon Canon PowerShot SX540 HS

  • 4.3 mm
  • 1/60
  • f f/4.0
  • ISO 80
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As part of calibrating temp system, I analyzed several known good thermistors to generate reasonable Steinhart-Hart coefficients via curve matching of resistance measurements at various temps (e.g. 0'C, 20'C, 67'C, and 100'C).  Results:

RT=R25exp{B{(1/(T+273.15)-1/(25+273.15)} OHM

where:

R25=400, B=4100

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