TECHNOLOGIES
A method for correcting the systematic error of thermocouple readings
- 1 Institute of Metal Science, Equipment and Technology with Hidroaerodinamics Centre "Acad.A.Balevski" Bulgarian Academy of Science
Abstract
A mathematical approach is presented for estimation of inertia of thermocouples in unsteady heat transfer processes. The approach allows to estimate the systematic error in measured data and to make a first-order correction, bringing the measurement data significantly closer to the real ones. The efficiency of the method is illustrated by computer simulation of two examples from foundry practice. The symmetry of heat transfer processes is used to identify an important and determining parameter of the inertia of the thermocouple.
Keywords
References
- L. Drenchev, G. Georgiev, Theoretical and experimental study of the error in the reading of a thermocouple in unsteady heat transfer, J. “Material Science and Technology”, 14, pр.65, (1986), (in Bulgarian).
- G. Georgiev, N. Dzhagarova, On a method for increasing the accuracy of thermal analysis, J. “Technical thought”, 27, pp.87, (1990), (in Bulgarian).
- Fortran Power Station package. Subroutine
- T. Kupenova, Subroutines for Data Smooth Approximation, Commun. JINR, Dubna P11-80-669 (1980), in Russian.