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Sampling apparatus

  • US 5,763,795 A
  • Filed: 12/19/1996
  • Issued: 06/09/1998
  • Est. Priority Date: 12/19/1995
  • Status: Expired due to Fees
First Claim
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1. A sampling apparatus comprising:

  • a sampling valve including a sample inlet, through which an electrically conductive sample is input, a sample outlet through which the electrically conductive sample is output, and a sampling passage connected between the sample inlet and sample outlet;

    a first electrode section located near the sample inlet;

    a second electrode section located near the sample outlet; and

    a measuring section for measuring an impedance between the first and second electrode sections and for comparing the measured impedance to a reference impedance to determine whether or not the sampling passage contains a predetermined amount of the sample.

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