For the method for level gauging

For the method for level gauging

  • CN 101,896,797 B
  • Filed: 12/12/2008
  • Issued: 12/09/2015
  • Est. Priority Date: 12/18/2007
  • Status: Active Grant
First Claim
Patent Images

1. for the method for the level gauging in container (1), first filler (3) and/or the second filler (5) are arranged in this container, wherein the proportion of the first filler (3) is less than the proportion of the second filler (5), and two kinds of fillers (3,5) have different specific inductive capacity (ε

  • ), wherein said method comprises following step;

    -electromagnetic signal (S) transmission is entered container (1),The dielectric boundaries place that-filler (3,5) that contains at least one is by container (1) produces is reflected, and a part (Rx, Ry) for wherein said signal (S) is reflected, and-for each by the part (Rx, Ry) reflected, measure the transit time (Tx that depends on the position of the dielectric boundaries causing reflection, Ty), this transit time is that this part (Rx, Ry) of described signal (S) arrives at this dielectric boundaries and returns the required time-measure electric capacity (C) between capacitive probe (13) and reference electrode (15), this capacitance dependence in the amount of filler (3,5) being arranged in container (1), and-based on the electric capacity (C) measured and the transit time (Tx of measurement, Ty), for each filler (3 contained in container (1),

         5) position is determined, this position corresponds to when each filler (3 in container,

         5) total amount is formed single only containing this filler (3,5) during layer, corresponding filler (3 is made due to the amount of the second filler (5) that contains in the amount of the first filler (3) that contains in container and container (1),

         5) the position residing for filler upper surfaceWherein, for the situation only determining a transit time (Tx),-set up a hypothesis, there is conclusive reflection about the transit time (Tx) occurred for measuring in which dielectric boundaries,-for each filler (3 contained in container (1),

         5), based on the transit time (Tx) of measuring, the electric capacity (C) of measurement and described hypothesis, determine when each filler (3 in container (1),

         5) total amount is formed single only containing this filler (3,5) during layer, corresponding filler (3 is made due to the amount of the second filler (5) that contains in the amount of the first filler (3) that contains in container (1) and container (1),

         5) the position residing for filler upper surface-physically based deformation boundary condition, checks with the described correctness being assumed to be the position that basis is determined, and-when checking that display does not meet, change hypothesis, repeat this method.

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