Method and apparatus for measuring the level of liquid using optical fiber strain gauge
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United States of America Patent
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Mar 9, 2004
Grant Date -
May 2, 2002
app pub date -
Mar 8, 2001
filing date -
Sep 18, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
For measurement of a liquid level, an optical fiber connected at its one end portion to force receiving means movably arranged in liquid to receive force from the liquid is dipped in the liquid together with the force receiving means, and a change in the force acting on said force receiving means when the liquid level changes is detected as a change in strain in the optical fiber by means of an optical fiber strain gauge connected to the other end of the optical fiber, thus measuring a water level of the liquid.
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