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Magnetic flow meter with buffering electrodes

  • US 7,571,655 B1
  • Filed: 11/28/2008
  • Issued: 08/11/2009
  • Est. Priority Date: 11/28/2008
  • Status: Expired due to Fees
First Claim
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1. A magnetic flow sensor for measuring the rate of flow of a fluid along a flow direction, the sensor comprising:

  • a pair of sensing electrodes that, when wetted by the fluid, define a sensing path through the fluid transverse to the flow direction;

    each of the sensing electrodes having at least one buffer electrode associated therewith;

    each of the sensing electrodes connected to an input of a signal processing circuit operable to provide, as separate outputs, a flow signal representative of a flow-induced voltage, and an input to a respective buffer amplifier operable to supply a respective buffer voltage to the associated at least one buffer electrode.

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