Measuring and testing – Gas analysis – Solid content of gas
Patent
1985-06-25
1988-01-12
Goldstein, Herbert
Measuring and testing
Gas analysis
Solid content of gas
73 61R, 7386125, G01N 2902, G01F 166
Patent
active
047182695
ABSTRACT:
System for measuring particle transport in a fluid, comprising a transmitter for transmitting a wave beam in the direction of a measuring volume in the fluid under the control of an electrical control signal and a receiver receiving, within a reception beam, waves scattered by particles in said measuring volume and supplying a corresponding electrical reception signal. The measuring volume is determined by the intersection of the transmission beam and the reception beam, The system comprises a second receiver which receives scattered waves from a second correspondingly defined measuring volume. The wave propagation path between the transmitter and the second receiver is equal to n times the wave propagation path between the transmitter and the first receiver. A measuring apparatus receives the control signal of the transmitter and the reception signals of both receivers to derive therefrom data relating to the concentration of the particles in the measuring volume and/or the velocity component in the plane of the transmitting and receiving direction of both transducers.
REFERENCES:
patent: 3741014 (1973-06-01), Tamura
patent: 3889533 (1975-06-01), Balser
patent: 4527420 (1985-07-01), Foote
Goldstein Herbert
Sticting "Stichting Waterbouwkundig Laboratorium"
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