Apparatus and method for measuring the mass of a substance
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United States of America Patent
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Feb 6, 2007
Issued Date -
N/A
app pub date -
Feb 13, 2006
filing date -
Apr 5, 2000
priority date (Note) -
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Abstract
An apparatus for measuring the mass of a substance includes a sensor having a membrane layer, the membrane for receiving the substance thereon, an oscillator device for driving the membrane at a reference resonant frequency, a frequency detection device for determining a change in the reference resonant frequency caused by the presence of the substance on the membrane, and a mass determining device for determining the mass of the substance, the change in the reference resonant frequency being indicative of the mass of the substance.
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