Methods and systems for determining a viscosity of a fluid
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United States of America Patent
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Aug 25, 2009
Grant Date -
Sep 29, 2005
app pub date -
May 26, 2005
filing date -
Aug 21, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
Methods for determining a viscosity of a fluid passing through a fluid pump are disclosed. An amount of energy associated with axially moving a rotor may be determined and correlated to a viscosity of fluid interacting therewith. For example, energy associated with a response of a suspended rotor may be determined. The amount of energy may be correlated with a viscosity of the fluid interacting with the rotor. The rotor may be initially unsuspended and an amount of energy associated with suspending the rotor may be determined and correlated with a viscosity of fluid interacting with the rotor. In another method, subsequent to suspending a rotor, the rotor may be unsuspended and an energy response of the rotor may be quantified to determine a viscosity of fluid passing through the pump. Systems for determining a viscosity of a fluid are also disclosed.
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