Fluid density and concentration measurement using noninvasive in situ ultrasonic resonance interferometry

Patent · Sat Jan 01 00:00:00 EST 1994

OSTI ID:869582

Pope, Noah G ^[1]; Veirs, Douglas K ^[2]; Claytor, Thomas N ^[1]

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1. Los Alamos, NM
2. Espanola, NM

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• Assignee: Regents of University of California, Office of Technology (Alameda, CA)
• Patent Number(s): US 5359541
• OSTI ID: 869582
• Country of Publication: United States
• Language: English

Related Subjects

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
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