FR1217957A - Apparatus for determining the physical properties of materials - Google Patents

Apparatus for determining the physical properties of materials

Info

Publication number
FR1217957A
FR1217957A FR781986A FR781986A FR1217957A FR 1217957 A FR1217957 A FR 1217957A FR 781986 A FR781986 A FR 781986A FR 781986 A FR781986 A FR 781986A FR 1217957 A FR1217957 A FR 1217957A
Authority
FR
France
Prior art keywords
determining
materials
physical properties
physical
properties
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.)
Expired
Application number
FR781986A
Other languages
French (fr)
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.)
Automation Products Inc
Original Assignee
Automation Products 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 Automation Products Inc filed Critical Automation Products Inc
Application granted granted Critical
Publication of FR1217957A publication Critical patent/FR1217957A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
    • G01F23/2967—Acoustic waves making use of acoustical resonance or standing waves for discrete levels
    • 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
    • G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
FR781986A 1957-12-26 1958-12-18 Apparatus for determining the physical properties of materials Expired FR1217957A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1217957XA 1957-12-26 1957-12-26

Publications (1)

Publication Number Publication Date
FR1217957A true FR1217957A (en) 1960-05-06

Family

ID=22398837

Family Applications (1)

Application Number Title Priority Date Filing Date
FR781986A Expired FR1217957A (en) 1957-12-26 1958-12-18 Apparatus for determining the physical properties of materials

Country Status (1)

Country Link
FR (1) FR1217957A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339400A (en) * 1963-08-12 1967-09-05 Automation Prod Mass presence sensing apparatus
FR2402861A1 (en) * 1977-09-13 1979-04-06 Marconi Co Ltd LIQUID LEVEL SENSOR

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339400A (en) * 1963-08-12 1967-09-05 Automation Prod Mass presence sensing apparatus
FR2402861A1 (en) * 1977-09-13 1979-04-06 Marconi Co Ltd LIQUID LEVEL SENSOR

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