Premium
High‐Stability Control of Multizone Furnaces using Optical Fibre Thermometers
Author(s) -
Sauermann H.,
Stenzel Ch.,
Keesmann S.,
Bonduelle B.
Publication year - 2001
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/1521-4079(200112)36:12<1329::aid-crat1329>3.0.co;2-1
Subject(s) - thermocouple , thermal stability , temperature control , stability (learning theory) , thermal , materials science , optical fiber , temperature measurement , coupling (piping) , nuclear engineering , mechanical engineering , thermodynamics , engineering , optics , computer science , composite material , physics , chemical engineering , machine learning
A high‐stability temperature control system for a 1500 °C multizone furnace has been developed and experimentally verified. It relies on the utilisation of optical fibre thermometers as precise temperature sensors. The strong thermal coupling between the zones requires an exact quantitative determination of the thermal exchange process. A holistic approach integrating theoretical and practical considerations has lead to a short‐term stability of less than 0.02 K at a temperature level of 1500 °C which is about one order of magnitude better than a temperature control based on thermocouples.