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GB809681A - Improvements in apparatus for detecting the presence or absence at a location, of a body of liquid - Google Patents

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

Info

Publication number
GB809681A
GB809681A GB865856A GB865856A GB809681A GB 809681 A GB809681 A GB 809681A GB 865856 A GB865856 A GB 865856A GB 865856 A GB865856 A GB 865856A GB 809681 A GB809681 A GB 809681A
Authority
GB
United Kingdom
Prior art keywords
liquid
transducer
level
valve
see
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
GB865856A
Inventor
Bernard Augustine Worswick
Zdzislaw Antoni Siemaszko
John Dennis Attwell
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 GB865856A priority Critical patent/GB809681A/en
Publication of GB809681A publication Critical patent/GB809681A/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
    • G01F23/2961—Acoustic 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
    • G01F23/2965—Measuring attenuation of transmitted waves

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

809,681. Automatic liquid-level control systems. BAILEY METERS & CONTROLS Ltd. March 19, 1957 [March 20, 1956], No. 8658/56. Class 38 (4). [Also in Groups XXXVIII and XL (c)] An ultrasonic transducer 1 (see Fig. 1), is so arranged in a valve oscillator circuit 3, 4 that when the liquid in a tank reaches a level 7 relay 5 is energized; the relay may actuate a bell or a lamp or may control a drain or a pump. The transducer capacitance when the liquid is below the datum level is such that oscillations in the circuit of valve 34 (see Fig. 2) ensue, causing relay operating valve 32 to be cut off. When the liquid reaches the datum level the transducer capacitance change, due to increased absorption of the ultrasonic waves of the liquid, inhibits oscillations the resulting conduction in valve 32 energizing relay coil 41. Capacitor 35 is chosen to give an oscillation frequency which is a resonant frequency of the transducer. Capacitors 35<SP>1</SP> are added manually, or automatically under thermostatic control, if the transducer capacitance varies with temperature. Details are given of various transducer mounting arrangements (see Figs. 4-7, not shown). In Fig. 8, not shown, the variation in level of a corrosive liquid is coupled mechanically to a piston which correspondingly varies the free surface level of a liquid determining the transducer circuit condition. Separate transmitting and receiving transducers are used in a further embodiment (see Group XXXVIII), Figs. 9 and 10 not shown.
GB865856A 1956-03-20 1956-03-20 Improvements in apparatus for detecting the presence or absence at a location, of a body of liquid Expired GB809681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB865856A GB809681A (en) 1956-03-20 1956-03-20 Improvements in 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
GB865856A GB809681A (en) 1956-03-20 1956-03-20 Improvements in apparatus for detecting the presence or absence at a location, of a body of liquid

Publications (1)

Publication Number Publication Date
GB809681A true GB809681A (en) 1959-03-04

Family

ID=9856732

Family Applications (1)

Application Number Title Priority Date Filing Date
GB865856A Expired GB809681A (en) 1956-03-20 1956-03-20 Improvements in apparatus for detecting the presence or absence at a location, of a body of liquid

Country Status (1)

Country Link
GB (1) GB809681A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079596A (en) * 1960-03-17 1963-02-26 Duane E Atkinson Acoustic level sensing system
US3214974A (en) * 1963-12-18 1965-11-02 Altman Lawrence Remote acoustical sensor
US3222929A (en) * 1964-09-21 1965-12-14 Henry P Kalmus Augmented-signal mechanical wave depth gauge
US3407398A (en) * 1964-01-30 1968-10-22 British Petroleum Co Liquid presence detector
US3520186A (en) * 1968-03-11 1970-07-14 Nat Sonics Corp Ultrasonic fluid interface sensing
US4118983A (en) * 1975-08-04 1978-10-10 Nikolai Ivanovich Brazhnikov Method of and device for controlling gas-liquid or liquid-liquid interface in monolayer reservoirs
US4248087A (en) * 1979-08-16 1981-02-03 Halliburton Company System and method for determining fluid level in a container
EP0028114A2 (en) * 1979-10-29 1981-05-06 Bestobell (UK) Limited Liquid level sensor
US4316183A (en) * 1980-10-24 1982-02-16 Bestobell Mobrey Limited Liquid level sensor
GB2128326A (en) * 1982-10-05 1984-04-26 Itt Ind Ltd Non-intrusive liquid level switch
GB2137348A (en) * 1983-03-30 1984-10-03 Atomic Energy Authority Uk Ultrasonic liquid interface detector
US4545245A (en) * 1983-11-09 1985-10-08 Simmonds Precision Products, Inc. Liquid level sensor using sonic methods
GB2168150A (en) * 1984-12-05 1986-06-11 Atomic Energy Authority Uk Pipeline inspection
EP0187460A2 (en) * 1984-12-05 1986-07-16 United Kingdom Atomic Energy Authority Method and apparatus for inspecting liquid in a pipeline
US4676098A (en) * 1984-08-21 1987-06-30 Batelle - Institut E.V. Vessel for bulk materials
US5730025A (en) * 1995-10-17 1998-03-24 Endress + Hauser Gmbh + Co. Device for monitoring a predetermined level of a liquid in a container
US5755136A (en) * 1995-10-17 1998-05-26 Endress + Hauser Gmbh + Co. Device for monitoring a predetermined level of a liquid in a container
US5836192A (en) * 1995-10-17 1998-11-17 Endress + Hauser Gmbh + Co. Device for monitoring a predetermined level of a liquid in a container

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079596A (en) * 1960-03-17 1963-02-26 Duane E Atkinson Acoustic level sensing system
US3214974A (en) * 1963-12-18 1965-11-02 Altman Lawrence Remote acoustical sensor
US3407398A (en) * 1964-01-30 1968-10-22 British Petroleum Co Liquid presence detector
US3222929A (en) * 1964-09-21 1965-12-14 Henry P Kalmus Augmented-signal mechanical wave depth gauge
US3520186A (en) * 1968-03-11 1970-07-14 Nat Sonics Corp Ultrasonic fluid interface sensing
US4118983A (en) * 1975-08-04 1978-10-10 Nikolai Ivanovich Brazhnikov Method of and device for controlling gas-liquid or liquid-liquid interface in monolayer reservoirs
US4248087A (en) * 1979-08-16 1981-02-03 Halliburton Company System and method for determining fluid level in a container
EP0028114A2 (en) * 1979-10-29 1981-05-06 Bestobell (UK) Limited Liquid level sensor
EP0028114A3 (en) * 1979-10-29 1981-11-04 Bestobell (Uk) Limited Liquid level sensor
US4316183A (en) * 1980-10-24 1982-02-16 Bestobell Mobrey Limited Liquid level sensor
GB2128326A (en) * 1982-10-05 1984-04-26 Itt Ind Ltd Non-intrusive liquid level switch
GB2137348A (en) * 1983-03-30 1984-10-03 Atomic Energy Authority Uk Ultrasonic liquid interface detector
US4545245A (en) * 1983-11-09 1985-10-08 Simmonds Precision Products, Inc. Liquid level sensor using sonic methods
US4676098A (en) * 1984-08-21 1987-06-30 Batelle - Institut E.V. Vessel for bulk materials
GB2168150A (en) * 1984-12-05 1986-06-11 Atomic Energy Authority Uk Pipeline inspection
EP0187460A2 (en) * 1984-12-05 1986-07-16 United Kingdom Atomic Energy Authority Method and apparatus for inspecting liquid in a pipeline
EP0187460B1 (en) * 1984-12-05 1990-05-16 United Kingdom Atomic Energy Authority Method and apparatus for inspecting liquid in a pipeline
US5730025A (en) * 1995-10-17 1998-03-24 Endress + Hauser Gmbh + Co. Device for monitoring a predetermined level of a liquid in a container
US5755136A (en) * 1995-10-17 1998-05-26 Endress + Hauser Gmbh + Co. Device for monitoring a predetermined level of a liquid in a container
US5836192A (en) * 1995-10-17 1998-11-17 Endress + Hauser Gmbh + Co. Device for monitoring a predetermined level of a liquid in a container

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