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.
1. Sarnes, B. Prozessgekoppelte Bestimmung und dynamische Korrektur des Zeitverhaltens von Mantelthermoelementen. PhD. Thesis, Technische Universität München, 1988.
2. D’Ans, J. and Lax, E. Taschenbuch für Chemiker und Physiker. Springer, Berlin, 1967.
3. Holman, J. P. Heat Transfer. Mc Graw Hill, Auckland, 1981.
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.
