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Liquid quantity gauging

  • US 5,207,099 A
  • Filed: 01/15/1992
  • Issued: 05/04/1993
  • Est. Priority Date: 02/01/1991
  • Status: Expired due to Term
First Claim
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1. A liquid-gauging system for determining the quantity of liquid in a tank having a floor, comprising:

  • at least three optical pressure sensors, each sensor being adapted to provide an optical output that varies in response to change of the mass of liquid in the tank above the sensor;

    means mounting the sensors in the tank for immersion in the liquid and for location on skew lines so that the sensors are normally not in the same horizontal plane with respect to the liquid surface, the sensors being displaced from one another in each of the x, y and z directions and at least two of the sensors being mounted above the floor of the tank;

    a store containing information representative of the shape of the tank;

    a processor; and

    means connecting the processor with the store and the sensors such that the processor determines the quantity of liquid in the tank from the outputs of the sensors and the stored information representing the shape of the tank.

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