04762425 is referenced by 242 patents and cites 22 patents.

Measurements of the times of flight of sound waves can be used to determine temperature in a gas contained in a long tube which confines sound waves. Sound pulses are transmitted and received by a suitable loud speaker attached to one end of the long tube. A number of stubs or other discontinuities produce the sound reflections whose times of arrival are measured. The time intervals yield average sound speeds in each interval between any two stubs from which temperatures are calculated. Corrections for thermal expansion of the tube are easily made.

System for temperature profile measurement in large furnances and kilns and method therefor
Application Number
Publication Number
Application Date
October 15, 1987
Publication Date
August 9, 1988
Shakkottai P Venkateshan
No. 34, III Main Rd., Gandhi Nagar, Adyar, Madras 60020
Parthasarathy Shakkottai
2622 Gardi St., Duarte, 91010
G01K 11/22
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