TEMPERATURE DETERMINATION IN MODERATELY DENSE, HIGH-TEMPERATURE GASES BY TRANSIENT THERMOCOUPLE PROBES.
Abstract
A study was made to determine the bases of the transient methods of the single probe, the dual-probe, and, the intermittent probe for measuring high gas temperatures. Simple parameters critically affecting the probe accuracies have been singled out for comparing the relative merits of the methods under scrutiny. The results indicate no fundamental superiority of any one technique, but in practice the single probe seems most likely to attain the theoretical accuracy by virtue of its simplicity of implementation. The analyses indicate the need to take the variation of all probing parameters into account because of the tendency for these effects to be magnified into large errors resulting in inaccurate gas temperature determination. A novel three-terminal low noise thermocouple sensing element is presented together with its performance in an arc plasma environment. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1965
- Accession Number
- AD0617702
Entities
People
- P. S. Tschang
Organizations
- Columbia University