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GB873801A - Improvements in apparatus for ascertaining the level of a surface of a body of liquid - Google Patents

Improvements in apparatus for ascertaining the level of a surface of a body of liquid

Info

Publication number
GB873801A
GB873801A GB1199860A GB1199860A GB873801A GB 873801 A GB873801 A GB 873801A GB 1199860 A GB1199860 A GB 1199860A GB 1199860 A GB1199860 A GB 1199860A GB 873801 A GB873801 A GB 873801A
Authority
GB
United Kingdom
Prior art keywords
ascertaining
liquid
level
april
servo
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
GB1199860A
Inventor
Henry John Rantzen
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.)
Danks Holding Ltd
Original Assignee
Bailey Meters and Controls Ltd
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 Bailey Meters and Controls Ltd filed Critical Bailey Meters and Controls Ltd
Priority to GB1199860A priority Critical patent/GB873801A/en
Publication of GB873801A publication Critical patent/GB873801A/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
    • G01F23/2962—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)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

873,801. Ultrasonic distance measuring apparatus. BAILEY METERS & CONTROLS Ltd. April 5, 1960, No. 11998/60. Addition to 844,878. Drawings to Specification. Class 40(7) The apparatus of the parent Specification is modified in that the delay line is in the circuit path between the transmitter and servo-motor control unit via the transducer(s). Specification 809,681 also is referred to.
GB1199860A 1960-04-05 1960-04-05 Improvements in apparatus for ascertaining the level of a surface of a body of liquid Expired GB873801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1199860A GB873801A (en) 1960-04-05 1960-04-05 Improvements in apparatus for ascertaining the level of a surface of a body of liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1199860A GB873801A (en) 1960-04-05 1960-04-05 Improvements in apparatus for ascertaining the level of a surface of a body of liquid

Publications (1)

Publication Number Publication Date
GB873801A true GB873801A (en) 1961-07-26

Family

ID=9996554

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1199860A Expired GB873801A (en) 1960-04-05 1960-04-05 Improvements in apparatus for ascertaining the level of a surface of a body of liquid

Country Status (1)

Country Link
GB (1) GB873801A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3214974A (en) * 1963-12-18 1965-11-02 Altman Lawrence Remote acoustical sensor
US3693445A (en) * 1970-06-26 1972-09-26 Sven J Johnson Liquid level measurement device
WO1994021311A3 (en) * 1993-03-24 1994-11-10 Haemonetics Corp Blood reservoir volume sensing system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3214974A (en) * 1963-12-18 1965-11-02 Altman Lawrence Remote acoustical sensor
US3693445A (en) * 1970-06-26 1972-09-26 Sven J Johnson Liquid level measurement device
WO1994021311A3 (en) * 1993-03-24 1994-11-10 Haemonetics Corp Blood reservoir volume sensing system
US5458566A (en) * 1993-03-24 1995-10-17 Haemonetics, Inc. Reservoir volume sensing systems for autologous blood recovery
EP1166806A3 (en) * 1993-03-24 2003-10-08 Haemonetics Corporation Blood reservoir volume sensing system

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