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Flow meter

  • US 4,140,013 A
  • Filed: 02/24/1977
  • Issued: 02/20/1979
  • Est. Priority Date: 03/01/1976
  • Status: Expired due to Term
First Claim
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1. In a flow meter for metering the flow of a medium, said flow meter comprising a chamber in which is disposed at least one rotatably moveable measuring organ, a measured value pickup device for deriving an electrical quantity corresponding to the revolutions of said measuring organ, and an evaluating device responsive to the pickup device, the improvement comprising:

  • (a) a voltage generator separate from said pickup device and connected in driving relationship with said measuring organ, said generator comprising a magnetic coupling responsive to said measuring organ for providing an indication of the rotary movement of said measuring organ and a winding arrangement disposed adjacent said magnetic coupling providing an output voltage; and

    (b) means responsive to the output voltage of said winding arrangement for supplying power to one of said pickup device and said evaluating device.

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