ESTONIAN ACADEMY
PUBLISHERS
eesti teaduste
akadeemia kirjastus
cover
Estonian Journal of Engineering

High-precision measurement of absolute temperatures using thermistors; 379–383

Full article in PDF format

Author
Volker H. Hans

Abstract

High-precision temperature measuring technique presupposes a high standard of quality of all components of the measuring system. Most important is the temperature sensor. Thermistors have been proved good for long-term stability in a limited temperature range from – 20 to + 50 °C. The non-linear characteristic of the thermistor can be mathematically described. Multislope analogue-digital converters with very high resolution applying compensation measuring methods are efficient for the exact determination of absolute temperatures with an accuracy better than 1 mK resolution.


References

1. Steinhart, J. and Hart, S. Calibration curves for thermistors. Deep-Sea Res., 1968, 15, 479–503.

2. Kollmeier, H. Hochgenaue Temperaturmessung mit Multislope A/D-Umsetzer. Shaker, Aachen, 1996.

3. Sachs, L. Angewandte Statistik. Springer, Berlin, 1992.

4. Bericht über die Prüfung von 3 Körpertemperaturfühlern. Physikalisch-Technische Bundes­anstalt, Berlin, Gesch. Nr. 9.12-33/91, 1991.


Back to Issue