Correction-free pyrometry in radiant wall furnaces
- Thomas, Andrew S. W.
- May 31, 1994.
- Physical Description:
- 1 electronic document
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
- A specular, spherical, or near-spherical target is located within a furnace having inner walls and a viewing window. A pyrometer located outside the furnace 'views' the target through pyrometer optics and the window, and it is positioned so that its detector sees only the image of the viewing window on the target. Since this image is free of any image of the furnace walls, it is free from wall radiance, and correction-free target radiance is obtained. The pyrometer location is determined through a nonparaxial optical analysis employing differential optical ray tracing methods to derive a series of exact relations for the image location.
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19940030608.
Accession ID: 94N35114.
- No Copyright.
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