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Laser-optical arrangement for measuring the degree of dispersion in flowing systems

  • US 4,752,131 A
  • Filed: 03/28/1985
  • Issued: 06/21/1988
  • Est. Priority Date: 04/04/1984
  • Status: Expired due to Term
First Claim
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1. A laser-optical arrangment for measuring the degree of dispersion in a flowing two-phase system containing flowing particles or groups of particles, said arrangement comprisingmeans for producing pulse-like optical signals from said flowing particles or groups of particles, said producing means includingoptical transmitting means and optical receiving means, and a measuring cell containing enveloping means for separating said flowing system from said transmitting and receiving means,said transmitting means containing a source of laser light, a first light guide in the form of an individual light transmitting fiber and a lens system for causing a parallel or focused light bundle to emerge therefrom which has a diameter of the order of magnitude of the particles or groups of particles, andsaid receiving means containing a second light guide in the form of a light-transmitting fiber bundle, and a photodetector for producing from said optical signals time-dependent current/voltage fluctuations, andmeans for deriving from said fluctuations an integrated measurement of the root-mean-square value, thereby to determine the degree of dispersion.

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