P35 - Calibration of Temperature Probes on Heat Pipes
- Event
- SMSI 2025
2025-05-06 - 2025-05-08
Nürnberg - Band
- Poster
- Chapter
- Poster Session
- Author(s)
- J. Favreau, E. Georgin - CETIAT, Villeurbanne (France)
- Pages
- 300 - 302
- DOI
- 10.5162/SMSI2025/P35
- ISBN
- 978-3-910600-06-5
- Price
- free
Abstract
For the past ten years, CETIAT has been working on the development of a new type of temperature generator. The goal is to reduce the stabilization time at calibration temperatures while ensuring an exceptional thermal quality of the comparison medium. Heat pipe-based temperature generators are studied in several metrology institutes, such as INRIM and LNE. While water-based heat pipes have already been the subject of extensive research, the innovation introduced by CETIAT lies in the development of an ethanol-based heat pipe. This breakthrough enables coverage of a temperature range suitable for industrial calibrations, from -30 °C to 120 °C. This is made possible by combining two heat pipes: one using water and the other ethanol. These heat pipes are GCHPs: Gas-Controlled Heat Pipes. The use of a heat pipe for calibrations at negative temperatures represents a first in metrology. In 2024, this calibration method was accredited by COFRAC. This article provides a summary of the results obtained and the calibration possibilities offered by this innovative technology.