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Method and Apparatus for Measuring Fluid FlowMethod and apparatus for making measurements on fluids related to their complex permeability are disclosed. A microwave probe is provided for exposure to the fluids. The probe can be non-intrusive or can also be positioned at the location where measurements are to be made. The impedance of the probe is determined. in part. by the complex dielectric constant of the fluids at the probe. A radio frequency signal is transmitted to the probe and the reflected signal is phase and amplitude detected at a rapid rate for the purpose of identifying the fluids. Multiple probes may be selectively positioned to monitor the behavior of the fluids including their flow rate. Fluids may be identified as between two or more different fluids as well as multiple phases of the same fluid based on differences between their complex permittivities.
Document ID
19980037598
Acquisition Source
Johnson Space Center
Document Type
Other - Patent
Authors
Arndt, G. Dickey
(NASA Johnson Space Center Houston, TX United States)
Nguyen, Thanh X.
(NASA Johnson Space Center Houston, TX United States)
Carl, James R.
(NASA Johnson Space Center Houston, TX United States)
Date Acquired
August 18, 2013
Publication Date
October 7, 1997
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
Patent Number: US-Patent-5,675,259
Patent Number: NASA-Case-MSC-22366-1
Patent Application Number: US-Patent-Appl-SN-528069
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-5,675,259|NASA-Case-MSC-22366-1
Patent Application
US-Patent-Appl-SN-528069
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