Remote high-temperature insulatorless heat-flux gauge

Details Remote high-temperature insulatorless heat-flux gauge Remote high-temperature insulatorless heat-flux gauge

1992-11-13

1993-12-28

Cuchlinski, Jr., William A.

Thermal measuring and testing

Heat flux measurement

374 30, G01K 1700

Patent

active

052733599

ABSTRACT:
A remote optical heat-flux gauge for use in extremely high temperature environments is described. This application is possible because of the use of thermographic phosphors as the sensing media, and the omission of the need for an intervening layer of insulator between phosphor layers. The gauge has no electrical leads, but is interrogated with ultraviolet or laser light. The luminescence emitted by the two phosphor layers, which is indicative of the temperature of the layers, is collected and analyzed in order to determine the heat flux incident on the surface being investigated. The two layers of thermographic phosphor must be of different materials to assure that the spectral lines collected will be distinguishable. Spatial heat-flux measurements can be made by scanning the light across the surface of the gauge.

REFERENCES:
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K. A. Wickersheim et al., "Optical Temperature Measurement," Industrial Research/Development (Dec. 1979).

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