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Topic: Help reading temperatur with the G_1396 ntc thermistor (Read 709 times) previous topic - next topic

Jassper

I need to read and display temperature from a G_1396 Thermistor
http://www.specsensors.com/pdfs/ntc_radial_glass.pdf

I'm not sure where to start, the temperature range is non-linear so not sure how to calculate the temp based on the voltage dropped across it.

Any help would be greatly appreciated. THANKS!!!

johnwasser

There is a formula for characterizing a thermistor.  You use the voltage across the thermistor to calculate the resistance and the formulas to calculate the temperature from the resistance.

http://www.daycounter.com/Calculators/Steinhart-Hart-Thermistor-Calculator.phtml
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Jassper

#2
Nov 06, 2012, 01:40 pm Last Edit: Nov 06, 2012, 01:43 pm by Jassper Reason: 1
Thanks! that helped.

Your post led me to this,
http://www.arduino.cc/playground/ComponentLib/Thermistor2
http://www.arduino.cc/playground/ComponentLib/Thermistor4

Think I have enough now to at least set something on fire.  ]:D
Thanks again!

EDIT
And here is a good tutorial
http://web.cecs.pdx.edu/~gerry/class/EAS199B/howto/thermistorArduino/thermistorArduino.pdf

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