GB818351A - Improvements in or modifications of apparatus for detecting the presence or absence,at a location, of a body of liquid - Google Patents

Improvements in or modifications of apparatus for detecting the presence or absence,at a location, of a body of liquid

Info

Publication number
GB818351A
GB818351A GB1057057A GB1057057A GB818351A GB 818351 A GB818351 A GB 818351A GB 1057057 A GB1057057 A GB 1057057A GB 1057057 A GB1057057 A GB 1057057A GB 818351 A GB818351 A GB 818351A
Authority
GB
United Kingdom
Prior art keywords
transducer
liquid
level
meter
tank wall
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
GB1057057A
Inventor
Bernard Augustine Worswick
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 GB1057057A priority Critical patent/GB818351A/en
Publication of GB818351A publication Critical patent/GB818351A/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
    • G01F23/2965—Measuring attenuation of transmitted 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
    • G01F23/2961—Acoustic waves for discrete levels

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

818,351. Ultrasonic testing. BAILEY METERS & CONTROLS Ltd. March 31, 1958 [April 1, 1957], No. 10570/57. Addition to 809,681. Class 118 (2). [Also in Group XXXIX] Continuous liquid level indication between limits is provided by sensing the capacitance of an ultrasonic transducer which varies with liquid level. Level of liquid 3 between upper and lower boundaries of piezo-electric transducer 4 is indicated by meter 9 energized from oscillator 5. In a further arrangement, Fig. 2 (not shown), range of measurement is increased by interposing a flared plate (see Group XXXIX) between transducer and tank wall. The plate may be apertured in the tank wall and ultrasonically insulated therefrom by a rubber or cork collar. Transducer 4, Fig. 6, forms part of feedback oscillator circuit of triode 31: oscillation amplitude decreases as liquid rises above the transducer's lower level giving increasing current through meter 41. Capacitors switched under thermostatic control across capacitor 35 compensate for liquid temperature variation. A magneto-strictive transducer may be used.
GB1057057A 1957-04-01 1957-04-01 Improvements in or modifications of apparatus for detecting the presence or absence,at a location, of a body of liquid Expired GB818351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1057057A GB818351A (en) 1957-04-01 1957-04-01 Improvements in or modifications of apparatus for detecting the presence or absence,at a location, of a body of liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1057057A GB818351A (en) 1957-04-01 1957-04-01 Improvements in or modifications of apparatus for detecting the presence or absence,at a location, of a body of liquid

Publications (1)

Publication Number Publication Date
GB818351A true GB818351A (en) 1959-08-12

Family

ID=9970282

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1057057A Expired GB818351A (en) 1957-04-01 1957-04-01 Improvements in or modifications of apparatus for detecting the presence or absence,at a location, of a body of liquid

Country Status (1)

Country Link
GB (1) GB818351A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244159B (en) * 1964-12-05 1967-07-13 Eastman Kodak Co Process and device for the production of ketenes by pyrolysis of compounds which can be cleaved to form ketenes
GB2137348A (en) * 1983-03-30 1984-10-03 Atomic Energy Authority Uk Ultrasonic liquid interface detector
US4890490A (en) * 1987-07-06 1990-01-02 United Kingdom Atomic Energy Authority Liquid level monitoring
US5035140A (en) * 1988-11-03 1991-07-30 The Boeing Company Self cleaning liquid level detector
US5119676A (en) * 1991-09-03 1992-06-09 The Babcock & Wilcox Company Ultrasonic method and apparatus for determining water level in a closed vessel
CN110487357A (en) * 2019-09-11 2019-11-22 广州秀明环保科技有限公司 A kind of non-contact type ultrasonic liquid level monitor and liquid level inducing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244159B (en) * 1964-12-05 1967-07-13 Eastman Kodak Co Process and device for the production of ketenes by pyrolysis of compounds which can be cleaved to form ketenes
GB2137348A (en) * 1983-03-30 1984-10-03 Atomic Energy Authority Uk Ultrasonic liquid interface detector
US4890490A (en) * 1987-07-06 1990-01-02 United Kingdom Atomic Energy Authority Liquid level monitoring
US5035140A (en) * 1988-11-03 1991-07-30 The Boeing Company Self cleaning liquid level detector
US5119676A (en) * 1991-09-03 1992-06-09 The Babcock & Wilcox Company Ultrasonic method and apparatus for determining water level in a closed vessel
CN110487357A (en) * 2019-09-11 2019-11-22 广州秀明环保科技有限公司 A kind of non-contact type ultrasonic liquid level monitor and liquid level inducing method

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