Temperature sensor and extensometer for electrical power cables
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United States of America Patent
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Dec 7, 2010
Grant Date -
Nov 12, 2009
app pub date -
Jul 13, 2009
filing date -
Nov 11, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A thermometer and extensometer for cables and conductors is described. The travel time of one or more acoustic signals along a conductor is used to determine the temperature along the conductor and the length of the conductor. The acoustic frequency is selected to minimize temporal dispersion of the propagating acoustic energy. The technique can be used to measure the temperature of the windings in a transformer or other electrical apparatus.
First Claim
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International Classification(s)
- G01H:MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC....
- G01K:MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT;....
- G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....
- G01S:RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMI....
- G01B:MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIME....
- G01V:GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING ....
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