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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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Determination of the time behaviour of thermocouples for sensor speedup and medium supervision; 295–309

(Full article in PDF format)


Authors

Bernhard Sarnes, Elmar Schrüfer

Abstract

Thermocouples can not only be used for temperature measurement, but also for supervising the surrounding medium. For both applications the knowledge of the thermocouple time constant is necessary. As the time constant changes with operational conditions, online calibration is needed. This aim has been achieved for metallic sheathed thermocouples by modelling and test measurements.

Keywords

sheathed thermocouples, response time, dynamic sensor correction, state of the medium, process supervision.

References

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4. Koch , B. Grundlagen des Wärmetausches. Verlag H. Beucke u. Söhne , Dissen , 1950.

5. Landolt H. H. and Börnstein , R. Zahlenwerte und Funktionen aus der Physik , Chemie , Astronomie , Geo­physik und Technik (6. Auflage , Bd. IV/2a , 3 , 4a , 4b) , Springer , Berlin , 1972.

6. Braun , H. Experimentelle Untersuchungen zur dynamischen Druck- und Temperaturmessung in einer Hubschrauber-Gasturbine. PhD Thesis , Technische Universität München , 1992.

7. Bergdahl , B. G. and Osuma , R. Health test of components in nuclear reactor instrument systems using process identification. In OECD Nuclear Energy Agency Symposium on Reactor Noise. Munich , 1987 , 593–604.

8. Girard , J. P. , Recroix , H. , Beesley , M. J. , Weinkoetz , G. , Krebs , L. , Overton , R. S. and Hughes , G. Detection of coolant temperature noise in SPX1 using intrinsic high frequency thermocouples. In OECD Nuclear Energy Agency Symposium on Reactor Noise , Munich , 1987 , 377–392.

9. Iida , S. Instrumentation method and analysis of small temperature fluctuation in incore coolant. In OECD Nuclear Energy Agency Symposium on Reactor Noise , Munich , 1987 , 575–580.

 
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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