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8 years, 11 months ago.
ntcD5-9 Steinhart coefficients
Hi. I need the Steinhart coefficients (A , B and C) of ntc5D-9. Thank you for any help.
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2 Answers
8 years, 11 months ago.
Hi
You can calculate the Steinhart-Hart coefficients from 3 measured data points. The equations are here in the section coefficients.
https://en.wikipedia.org/wiki/Steinhart–Hart_equation
I found a data sheet with the temperature curve for this part. You could use the centre resistance for the calculation too.
http://www.microtech-hk.com/dl.php?itemid=PR01931&id=D031033
This part has a resistance of only 5Ohm at 25°C. If you want to measure around room temperature and higher maybe a thermistor with a resistance of 10K at 25°C might be better
8 years, 11 months ago.
DIY: look at http://www.thinksrs.com/downloads/PDFs/ApplicationNotes/LDC%20Note%204%20NTC%20Calculator.pdf and there is a online calculator at http://www.thinksrs.com/downloads/programs/Therm%20Calc/NTCCalibrator/NTCcalculator.htm