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Density measuring apparatus

  • US 5,247,834 A
  • Filed: 02/09/1990
  • Issued: 09/28/1993
  • Est. Priority Date: 02/09/1990
  • Status: Expired due to Fees
First Claim
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1. An instrument for measuring the density of fluids, comprising:

  • a housing having a chamber with a vertical space to be filled with an electrically-nonconductive fluid to be examined;

    a capacitor device variable in its capacitance and including said housing and a buoyant member in said housing chamber buoyantly movable vertically in the fluid; and

    load means for balancing the buoyancy of said buoyant member with a counterforce applying a balancing force increasing with change in position of the buoyant member, said load means including a spring in and connected to said housing and connected to said buoyant member;

    said capacitor device functioning to indicate the position of the buoyant member to indicate the density of the fluid in the chamber.

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