Densitometer
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United States of America Patent
Stats
-
Jan 24, 1995
Grant Date -
N/A
app pub date -
Feb 18, 1992
filing date -
Aug 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fluid densitometer is constructed using loudspeaker technology. The loudspeaker diaphragm carries a fluid sample chamber. The increased mass loading causes a shift in resonant frequency of the loudspeaker when driven in positive feedback. With suitable calibration the shift in frequency provides a measure of the density of the fluid sample. In a modification, two loudspeakers are mounted back to back with the opposing diaphragms defining a sample chamber.
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Cited Art Landscape
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