Coriolis flowmeter having constant voltage sensor
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United States of America Patent
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Mar 16, 2010
Grant Date -
Jan 15, 2009
app pub date -
Jul 3, 2008
filing date -
Jul 12, 2007
priority date (Note) -
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Abstract
Coriolis mass flowmeter with a Coriolis tube and with an optical detection device, which optical detection device includes at least one optical sensor for generating a signal that is representative of the movement of the Coriolis tube, the optical sensor comprising a light source and a photosensitive sensor, wherein the optical detection device includes elements for applying a constant voltage across the photosensitive sensor during operation independently of the current generated by the photosensitive sensor in response to incident light, as well as elements for determining the value of the current generated by the photosensitive sensor and converting it into an output signal.
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