System for temperature profile measurement in large furnances and kilns and method therefor
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United States of America Patent
Stats
-
Aug 9, 1988
Grant Date -
N/A
app pub date -
Oct 15, 1987
filing date -
Oct 15, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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