Measuring and testing – Volume or rate of flow – Using rotating member with particular electrical output or...
Reexamination Certificate
2004-08-30
2008-11-25
Rogers, David A. (Department: 2856)
Measuring and testing
Volume or rate of flow
Using rotating member with particular electrical output or...
C073S168000, C073S195000, C318S085000, C318S098000, C318S717000
Reexamination Certificate
active
07454985
ABSTRACT:
The present invention relates to a method and relevant electronic device (10) for determining the hydraulic flow rate in a pump driven by a synchronous electric motor (12), said motor (12) being of the type comprising a rotor (14), equipped with a permanent magnet, which is rotation-driven by the electromagnetic field generated by a stator (16) equipped with pole pieces (18) with relevant windings. The method comprises an indirect measuring of the flow rate through the following steps of: acquiring at least one pump operation variable; comparing the value of said variable with a predetermined correlation table to hydraulic flow rate values and determining a corresponding flow rate value.
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Akerman & Senterfitt
Askoll Holding S.r.l.
Rogers David A.
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