Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1976-01-09
1978-08-29
Tokar, M.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 05R, G01R 3308
Patent
active
041106806
ABSTRACT:
A method of measuring the quantity of a flowing fluid through the use of nuclear magnetic spin resonance which includes; passing a fluid containing magnetizable nuclei and having portions of different flow velocities through a pipe of non-magnetic electrically insulating material; applying a direct-current magnetic field to the fluid to align the nuclei spin axes thereof; applying an alternating-current magnetic field to the fluid to synchronize the nuclei; and measuring the resultant nuclear magnetization and the velocity of respective different portions of the fluid with respect to time, the sum of the products of velocity and nuclear magnetization of the portions providing a measure of the quantity of the fluid.
REFERENCES:
patent: 3191119 (1965-06-01), Singer
patent: 3419793 (1968-12-01), Genthe et al.
patent: 3419795 (1968-12-01), Genthe et al.
patent: 3573607 (1971-04-01), Whitesel
patent: 3932805 (1976-01-01), Abe
J. H. Battocletti, W. R. Vander Heyden, W. K. Genthe, NMR Applied to Flow Measurement, Instrumentation Technology, Nov. 1968, pp. 53-58.
Bergmann Wilfried
Knuttel Berthold
Kraftwerk Union Aktiengesellschaft
Lerner Herbert L.
Tokar M.
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