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Apparatus for measuring a sorbate dispersed in a fluid stream

  • US 4,055,072 A
  • Filed: 09/19/1975
  • Issued: 10/25/1977
  • Est. Priority Date: 09/19/1975
  • Status: Expired due to Term
First Claim
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1. Apparatus for measuring a sorbate dispersed in a fluid stream comprising:

  • a signal source means for generating an alternating-current signal;

    acoustic transmission line means for disposition in the fluid stream and including an elongated body having a surface capable of sorbing an amount of a first sorbate to be measured representative of the concentration thereof in the fluid stream, said body being capable of propagating acoustic energy along its length from one end portion to another end portion, the propagated acoustic energy being damped in amplitude and shifted in phase such that the change in amplitude or phase is proportional to the amount of sorbate sorbed by said surface;

    first transducing means for converting said alternating current signal to acoustic energy and for applying said acoustic energy to said one end portion;

    second transducing means for converting the acoustic energy propagated to said other end portion to a corresponding first electrical signal; and

    comparator means for comparing said first electrical signal to said alternating current signal and for developing an output signal corresponding to a difference therebetween, said output signal being indicative of the concentration of the sorbate in the fluid stream.

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