Abstract
The output signal of the thermal converter should be insensitive to ambient temperature changes. In practice, however, a thermal converter always features a nonzero temperature coefficient of the output signal. This coefficient is determined mainly by the dependence of the heat transfer process on the ambient temperature. The main goal of this paper is to analyze the effect of different enclosures on particular and total temperature coefficients. Three types of enclosure are considered: high-volume enclosure filled with a gas at pressure close to the atmospheric, low-volume enclosure filled with a gas at pressure close to the atmospheric and low-volume partially evacuated enclosure at internal pressure of some 1-10-4 Pa. The analytical expressions for both the thermal conductances and their corresponding temperature coefficients are presented. Example numerical results for a prototype of the converter are also included.
| Original language | English |
|---|---|
| Pages (from-to) | 288-298 |
| Number of pages | 11 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 4516 |
| DOIs | |
| Publication status | Published - 2001 |
| Event | Optoelectronic and Electronic Sensors IV - Gliwice, Poland Duration: 13 Jun 2000 → 16 Jun 2000 |
Keywords
- Ac-dc transfer
- Ambient temperature coefficient reduction
- Calibrators
- Thermal converter
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
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