CA2028750A1 - Multi-level probe and system for measurement of physical conditions in liquid-containing tanks - Google Patents

Multi-level probe and system for measurement of physical conditions in liquid-containing tanks

Info

Publication number
CA2028750A1
CA2028750A1 CA002028750A CA2028750A CA2028750A1 CA 2028750 A1 CA2028750 A1 CA 2028750A1 CA 002028750 A CA002028750 A CA 002028750A CA 2028750 A CA2028750 A CA 2028750A CA 2028750 A1 CA2028750 A1 CA 2028750A1
Authority
CA
Canada
Prior art keywords
physical conditions
level probe
opening
measurement
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002028750A
Other languages
French (fr)
Other versions
CA2028750C (en
Inventor
Eric Campbell
Gaylon Campbell
Jeff Norton
Art Heers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Campbell Scientific Inc
Original Assignee
Campbell Scientific Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Campbell Scientific Inc filed Critical Campbell Scientific Inc
Publication of CA2028750A1 publication Critical patent/CA2028750A1/en
Application granted granted Critical
Publication of CA2028750C publication Critical patent/CA2028750C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves
    • G01F23/2962—Measuring transit time of reflected waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H5/00—Measuring propagation velocity of ultrasonic, sonic or infrasonic waves, e.g. of pressure waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02818—Density, viscosity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02836—Flow rate, liquid level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S181/00—Acoustics
    • Y10S181/40—Wave coupling
    • Y10S181/402—Liquid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S367/00—Communications, electrical: acoustic wave systems and devices
    • Y10S367/908—Material level detection, e.g. liquid level

Abstract

A multi-level probe for sonic range measurements utilizes a plurality of parallel reflectors that each include an opening arranged coaxially about a beam of ultrasonic energy transmitted along a reference axis from an associated transducer. The opening in each reflector permits most of the sonic energy to pass to a subsequent reflective surface, while the periphery about the opening provides echo signals for determining physical conditions in the environment through which the sonic energy has passed. A novel system is used for determining physical conditions that are a function of time differences between signals from different reflectors, calculated with a highly efficient digital signal processing algorithm.
CA002028750A 1990-06-08 1990-10-29 Multi-level probe and system for measurement of physical conditions in liquid-containing tanks Expired - Lifetime CA2028750C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US534,932 1990-06-08
US07/534,932 US5121340A (en) 1990-06-08 1990-06-08 Multi-level probe and system for measurement of physical conditions in liquid-containing tanks

Publications (2)

Publication Number Publication Date
CA2028750A1 true CA2028750A1 (en) 1991-12-09
CA2028750C CA2028750C (en) 2001-09-04

Family

ID=24132126

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002028750A Expired - Lifetime CA2028750C (en) 1990-06-08 1990-10-29 Multi-level probe and system for measurement of physical conditions in liquid-containing tanks

Country Status (7)

Country Link
US (1) US5121340A (en)
EP (1) EP0532666A1 (en)
JP (1) JPH05508913A (en)
AU (2) AU646059B2 (en)
CA (1) CA2028750C (en)
SG (1) SG48153A1 (en)
WO (1) WO1991019191A2 (en)

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US8620480B2 (en) 2003-04-25 2013-12-31 George Alexanian Irrigation water conservation with automated water budgeting and time of use technology
US7844368B2 (en) * 2003-04-25 2010-11-30 George Alexanian Irrigation water conservation with temperature budgeting and time of use technology
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US7891229B2 (en) * 2008-05-13 2011-02-22 Enraf B.V. Method and apparatus for real-time calibration of a liquid storage tank level gauge
US7586435B1 (en) * 2008-05-16 2009-09-08 Rosemount Tank Radar Ab Radar level gauge system using a waveguiding structure with periodically arranged reference impedance transitions
US8192075B2 (en) * 2008-08-19 2012-06-05 Ge Inspection Technologies, Lp Method for performing ultrasonic testing
GB2519462B (en) * 2009-05-27 2015-07-08 Silixa Ltd Apparatus for optical sensing
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US8943911B1 (en) 2011-01-10 2015-02-03 Mark C. Terrell Remote monitoring of stratified layers in grease interceptors
DE102012207724A1 (en) 2012-05-09 2013-11-14 Continental Automotive Gmbh Method for measuring the level of a liquid
US9343055B2 (en) * 2013-05-07 2016-05-17 General Electric Company Fluid density stratification location system, device and method
CN103425067B (en) * 2013-06-24 2016-03-16 高翔 Velocity of sound difference is utilized to identify liquids having different specific weight medium and control the system of its discharge
JP6217021B2 (en) * 2013-11-27 2017-10-25 国立研究開発法人日本原子力研究開発機構 Ultrasonic temperature measurement and flaw detection method Ultrasonic temperature and defect measurement method and apparatus
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Also Published As

Publication number Publication date
SG48153A1 (en) 1998-04-17
AU5500694A (en) 1994-04-14
WO1991019191A2 (en) 1991-12-12
AU646059B2 (en) 1994-02-03
JPH05508913A (en) 1993-12-09
CA2028750C (en) 2001-09-04
US5121340A (en) 1992-06-09
AU659043B2 (en) 1995-05-04
EP0532666A1 (en) 1993-03-24
WO1991019191A3 (en) 1992-03-19
AU8069691A (en) 1991-12-31

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