Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Patent
1981-08-24
1984-01-03
Ruehl, Charles A.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
7386106, 324 585A, G01N 2200, G01F 170
Patent
active
044236239
ABSTRACT:
A meter and a method are provided for measuring the composition and flow rate of a coal slurry and other similar mixtures. The meter is a waveguide through which the mixture flows. Microwaves are propagated in the waveguide from a transmitter probe. A detector probe spaced from the transmitter probe receives signals from the microwaves. Those signals are processed to determine a characteristic frequency of the waveguide or the wavelength of the propagating microwave, which are related to the composition of the mixture within the waveguide. A second transmitter and detector pair determines these properties for another portion of the waveguide. Differences in the frequencies resulting from inhomogenuities in the mixture are cross correlated to determine the flow rate of the mixture.
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D. A. Ellerbruch-"Microwave Methods for Cryogenic Liquid & Slush Instrumentation", IEEE Trans. on Inst. and Meas., vol. 1M-19, No. 4, Nov. 1970, pp. 412-416.
D. W. Griffen, "Development in Microwave Instrumentation for Ind. Process Control", Elec. Instrumentation Conf., May 1972, pp. 180-185.
Chung Kwang E.
Goldberg Ira B.
Harker Alan B.
Ho William W.
Hamann H. Fredrick
Malin Craig O.
Rockwell International Corporation
Ruehl Charles A.
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