NL292013A - - Google Patents

Info

Publication number
NL292013A
NL292013A NL292013DA NL292013A NL 292013 A NL292013 A NL 292013A NL 292013D A NL292013D A NL 292013DA NL 292013 A NL292013 A NL 292013A
Authority
NL
Netherlands
Application number
Publication of NL292013A publication Critical patent/NL292013A/xx

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
    • G01F23/2962—Measuring transit time of reflected waves

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
NL292013D NL292013A (en)

Publications (1)

Publication Number Publication Date
NL292013A true NL292013A (en)

Family

ID=1875422

Family Applications (1)

Application Number Title Priority Date Filing Date
NL292013D NL292013A (en)

Country Status (1)

Country Link
NL (1) NL292013A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4787407A (en) * 1986-08-28 1988-11-29 Shell Internationale Research Maatschappij B.V. Method and apparatus for the detection of the fluid level in a tank being filled

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4787407A (en) * 1986-08-28 1988-11-29 Shell Internationale Research Maatschappij B.V. Method and apparatus for the detection of the fluid level in a tank being filled

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