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  Estonian Journal of Engineering

ISSN 1736-7522 (electronic)  ISSN 1736-6038  (print)

 An international scientific journal
Formerly: Proceedings of the Estonian Academy of Sciences Engineering
(ISSN 1406-0175)
Published since 1995

Estonian Journal of Engineering

ISSN 1736-7522 (electronic)  ISSN 1736-6038  (print)

 An international scientific journal
Formerly: Proceedings of the Estonian Academy of Sciences Engineering
(ISSN 1406-0175)
Published since 1995

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

(Full article in PDF format)


Authors

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.

Keywords

absolute temperature, thermistor, multislope AD converter, compensation.

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.

 
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Current Issue: Vol. 19, Issue 4, 2013





Publishing schedule:
No. 1: 20 March
No. 2: 20 June
No. 3: 20 September
No. 4: 20 December