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

Patent · Tue Oct 25 04:00:00 EDT 1994

OSTI ID:6819343

Pope, N G; Veirs, D K; Claytor, T N

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. 7 figs.

• DOE Contract Number: W-7405-ENG-36
• Assignee: Univ. of California, Office of Technology Transfer, Alameda, CA (United States)
• Patent Number(s): US 5359541; A
• Application Number: PPN: US 8-024128
• OSTI ID: 6819343
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
CALCULATION METHODS
CONCENTRATION RATIO
DENSITY
DISPERSIONS
FOURIER TRANSFORMATION
INTEGRAL TRANSFORMATIONS
MEASURING INSTRUMENTS
MIXTURES
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
PHYSICAL PROPERTIES
PROCESS SOLUTIONS
SOLUTIONS
TRANSFORMATIONS