Fluid density and concentration measurement using noninvasive in situ ultrasonic resonance interferometry
Abstract
The specific gravity or solute concentration of a process fluid solution located in a selected structure is determined by obtaining a resonance response spectrum of the fluid/structure over a range of frequencies that are outside the response of the structure itself. A fast fourier transform (FFT) of the resonance response spectrum is performed to form a set of FFT values. A peak value for the FFT values is determined, e.g., by curve fitting, to output a process parameter that is functionally related to the specific gravity and solute concentration of the process fluid solution. Calibration curves are required to correlate the peak FFT value over the range of expected specific gravities and solute concentrations in the selected structure.
 Inventors:

 Los Alamos, NM
 Espanola, NM
 Issue Date:
 Research Org.:
 Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
 OSTI Identifier:
 869582
 Patent Number(s):
 5359541
 Assignee:
 Regents of University of California, Office of Technology (Alameda, CA)
 Patent Classifications (CPCs):

G  PHYSICS G01  MEASURING G01N  INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
 DOE Contract Number:
 W7405ENG36
 Resource Type:
 Patent
 Country of Publication:
 United States
 Language:
 English
 Subject:
 fluid; density; concentration; measurement; noninvasive; situ; ultrasonic; resonance; interferometry; specific; gravity; solute; process; solution; located; selected; structure; determined; obtaining; response; spectrum; range; frequencies; outside; fast; fourier; transform; fft; performed; form; set; values; peak; value; curve; fitting; output; parameter; functionally; related; calibration; curves; required; correlate; expected; gravities; concentrations; curve fitting; calibration curve; fluid density; functionally related; specific gravity; fourier transform; process fluid; process parameter; peak value; ultrasonic resonance; solute concentration; calibration curves; concentration measurement; resonance response; response spectrum; fluid solution; fast fourier; situ ultrasonic; specific gravities; curve fit; /702/73/
Citation Formats
Pope, Noah G, Veirs, Douglas K, and Claytor, Thomas N. Fluid density and concentration measurement using noninvasive in situ ultrasonic resonance interferometry. United States: N. p., 1994.
Web.
Pope, Noah G, Veirs, Douglas K, & Claytor, Thomas N. Fluid density and concentration measurement using noninvasive in situ ultrasonic resonance interferometry. United States.
Pope, Noah G, Veirs, Douglas K, and Claytor, Thomas N. Sat .
"Fluid density and concentration measurement using noninvasive in situ ultrasonic resonance interferometry". United States. https://www.osti.gov/servlets/purl/869582.
@article{osti_869582,
title = {Fluid density and concentration measurement using noninvasive in situ ultrasonic resonance interferometry},
author = {Pope, Noah G and Veirs, Douglas K and Claytor, Thomas N},
abstractNote = {The specific gravity or solute concentration of a process fluid solution located in a selected structure is determined by obtaining a resonance response spectrum of the fluid/structure over a range of frequencies that are outside the response of the structure itself. A fast fourier transform (FFT) of the resonance response spectrum is performed to form a set of FFT values. A peak value for the FFT values is determined, e.g., by curve fitting, to output a process parameter that is functionally related to the specific gravity and solute concentration of the process fluid solution. Calibration curves are required to correlate the peak FFT value over the range of expected specific gravities and solute concentrations in the selected structure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}