Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2008-05-06
2008-05-06
Nguyen, Vincent Q. (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C324S453000, C324S672000, C324S676000
Reexamination Certificate
active
10588814
ABSTRACT:
The invention relates to a method and a device for determining the parameters of a fluctuating flow of a fluid in a pipe, wherein at least three electrodes that are placed at a distance from one another in the direction of flow are provided in the periphery of the flow, wherein alternating voltage signals are fed to a first upstream transmission electrode arrangement and to a second downstream transmission electrode arrangement and the receiving signals generated by the displacement current are detected in a receiving electrode arrangement located between the transmission electrodes and subjected to a time-discrete cross-correlation. The throughput times of the fluctuations detected by the electrodes are determined on the basis of the results.
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Ning-De Jin, Jun Wang, Li-Jun Xu; Optimization of a Conductive Probe With Vertical Multi-Electrode Array for the Measurement of Oil-Water Two-Phase Flow; Proceedings of the Second Intl. Conference on Machine Learning and Cybernetics, Xi'an, Nov. 2-5, 2003; IEEE 2003 pp. 899-905.
PCT International Search Report for PCT International Application No. PCT/AT2005/000044 mailed Jul. 25, 2005.
Fuchs Anton
Zangl Hubert
Forschungsholding Tu Graz GmbH
Nguyen Vincent Q.
RatnerPrestia
Technische Universitat Graz
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