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GB441576A - Improvements in or relating to arrangements for indicating electrically the quantityof liquid in a container - Google Patents

Improvements in or relating to arrangements for indicating electrically the quantityof liquid in a container

Info

Publication number
GB441576A
GB441576A GB33863/34A GB3386334A GB441576A GB 441576 A GB441576 A GB 441576A GB 33863/34 A GB33863/34 A GB 33863/34A GB 3386334 A GB3386334 A GB 3386334A GB 441576 A GB441576 A GB 441576A
Authority
GB
United Kingdom
Prior art keywords
liquid
condenser
container
plate
tank
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
GB33863/34A
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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 Siemens and Halske AG, Siemens Corp filed Critical Siemens and Halske AG
Publication of GB441576A publication Critical patent/GB441576A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/38—Brush holders
    • 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
    • G01F23/26—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

441,576. Electric signalling systems. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Nov. 24, 1934, No. 33863. Convention date, Nov. 24, 1933. [Class 40 (i)] In a system for indicating electrically the quantity of liquid in a tank, e.g. the petrol tank of an aircraft, the liquid forms the dielectric of a condenser which is so arranged that it includes either the entire quantity of liquid or a part of the liquid surrounding the "gravitational line " of the container. The gravitational line " is defined as the locus of the centres of gravity of elementary containers formed by planes parallel to the bottom of the container. As shown, a perforated and insulated plate 1b forms one plate of a condenser, the other plate of which is formed by the liquid container 1<a>. The plate 1<b> may be arranged horizontally instead of vertically. The condenser is connected in an A.C. bridge circuit formed by a second condenser 2 and resistances 3, 4 and the out-ofbalance current is passed through an amplifier 7 and rectifier 9 to operate a D.C. instrument 10. In order to ascertain the quantity of liquid in the tank the bridge is balanced by the condenser 2 which is calibrated to indicate quantity. The condenser 2 may be operated automatically under the control of the instrument 10 and may be adapted to control distant indicating apparatus which may be operated only when the quantity of liquid falls below a critical value. In a modification that part only of the liquid which surrounds the gravitional line of the container is enclosed between inner and outer condenser plates ; in addition a plurality of condensers connected in parallel may be disposed at different points in the liquid container. In the event that the container is of irregular shape, each condenser is shaped so that it conforms with the "gravitational line " of the space embraced. A calibrating condenser which is completely filled with liquid may be employed so that measurements of liquids of different dielectric constants may be effected. Several containers may be supervised individually and the sum of all the containers also may be measured.
GB33863/34A 1933-11-24 1934-11-24 Improvements in or relating to arrangements for indicating electrically the quantityof liquid in a container Expired GB441576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE441576X 1933-11-24

Publications (1)

Publication Number Publication Date
GB441576A true GB441576A (en) 1936-01-22

Family

ID=6517295

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33863/34A Expired GB441576A (en) 1933-11-24 1934-11-24 Improvements in or relating to arrangements for indicating electrically the quantityof liquid in a container

Country Status (2)

Country Link
FR (1) FR441576A (en)
GB (1) GB441576A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462599A (en) * 1941-11-21 1949-02-22 Emi Ltd Self-balancing bridge arrangement
US2529015A (en) * 1945-02-07 1950-11-07 West Road Co Ltd Liquid contents gauge
US2532883A (en) * 1945-04-30 1950-12-05 Bryant Condenser means for measuring level conditions
US2534802A (en) * 1945-04-09 1950-12-19 West Road Co Ltd Liquid level gauge
US2544012A (en) * 1944-12-11 1951-03-06 Liquidometer Corp Indicating and control device
US2563281A (en) * 1946-04-15 1951-08-07 Honeywell Regulator Co Liquid measuring condenser
US2563280A (en) * 1945-01-29 1951-08-07 Honeywell Regulator Co Liquid level measuring apparatus
US2581085A (en) * 1945-02-01 1952-01-01 Liquidometer Corp Liquid level gauge
US2582400A (en) * 1949-01-31 1952-01-15 Smith Stanley James Capacitance type liquid quantity gauge
US2622442A (en) * 1949-06-10 1952-12-23 Phillips Petroleum Co Apparatus for measuring liquid levels
US2630008A (en) * 1943-07-28 1953-03-03 Foxboro Co Electrical measuring apparatus, including a condition responsive impedance
US2638000A (en) * 1950-01-14 1953-05-12 Liquidometer Corp Bridge-type capacitance liquid level gauge
US2683371A (en) * 1950-03-16 1954-07-13 Brevets Pour Les Applic De L E Liquid level indicator
US2710541A (en) * 1950-05-19 1955-06-14 Texas Co Apparatus for volume measurement
US2724272A (en) * 1949-11-14 1955-11-22 Liquidometer Corp Liquid weight measuring system
US2737808A (en) * 1950-08-23 1956-03-13 Smith & Sons Ltd S Liquid contents gauges
US3010319A (en) * 1950-06-08 1961-11-28 Liquidometer Corp Liquid quantity measuring system
US3112647A (en) * 1954-10-27 1963-12-03 Liquidometer Corp Measuring system with compensation for dielectric constant
US4332167A (en) * 1975-11-28 1982-06-01 Drexelbrook Controls, Inc. Method of making an RF admittance measuring probe and product thereof
WO1992020050A1 (en) * 1991-04-24 1992-11-12 Standex International Corporation Capacitive liquid level sensor
EP1914527A1 (en) * 2006-10-20 2008-04-23 RANCILIO MACCHINE PER CAFFE' S.p.A. Device for regulating the level of a liquid in a boiler of a coffee machine

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462599A (en) * 1941-11-21 1949-02-22 Emi Ltd Self-balancing bridge arrangement
US2630008A (en) * 1943-07-28 1953-03-03 Foxboro Co Electrical measuring apparatus, including a condition responsive impedance
US2544012A (en) * 1944-12-11 1951-03-06 Liquidometer Corp Indicating and control device
US2563280A (en) * 1945-01-29 1951-08-07 Honeywell Regulator Co Liquid level measuring apparatus
US2581085A (en) * 1945-02-01 1952-01-01 Liquidometer Corp Liquid level gauge
US2529015A (en) * 1945-02-07 1950-11-07 West Road Co Ltd Liquid contents gauge
US2534802A (en) * 1945-04-09 1950-12-19 West Road Co Ltd Liquid level gauge
US2532883A (en) * 1945-04-30 1950-12-05 Bryant Condenser means for measuring level conditions
US2563281A (en) * 1946-04-15 1951-08-07 Honeywell Regulator Co Liquid measuring condenser
US2582400A (en) * 1949-01-31 1952-01-15 Smith Stanley James Capacitance type liquid quantity gauge
US2622442A (en) * 1949-06-10 1952-12-23 Phillips Petroleum Co Apparatus for measuring liquid levels
US2724272A (en) * 1949-11-14 1955-11-22 Liquidometer Corp Liquid weight measuring system
US2638000A (en) * 1950-01-14 1953-05-12 Liquidometer Corp Bridge-type capacitance liquid level gauge
US2683371A (en) * 1950-03-16 1954-07-13 Brevets Pour Les Applic De L E Liquid level indicator
US2710541A (en) * 1950-05-19 1955-06-14 Texas Co Apparatus for volume measurement
US3010319A (en) * 1950-06-08 1961-11-28 Liquidometer Corp Liquid quantity measuring system
US2737808A (en) * 1950-08-23 1956-03-13 Smith & Sons Ltd S Liquid contents gauges
US3112647A (en) * 1954-10-27 1963-12-03 Liquidometer Corp Measuring system with compensation for dielectric constant
US4332167A (en) * 1975-11-28 1982-06-01 Drexelbrook Controls, Inc. Method of making an RF admittance measuring probe and product thereof
US5182545A (en) * 1989-01-06 1993-01-26 Standex International Corporation Fluid level sensor having capacitive sensor
WO1992020050A1 (en) * 1991-04-24 1992-11-12 Standex International Corporation Capacitive liquid level sensor
EP1914527A1 (en) * 2006-10-20 2008-04-23 RANCILIO MACCHINE PER CAFFE' S.p.A. Device for regulating the level of a liquid in a boiler of a coffee machine
WO2008047306A2 (en) * 2006-10-20 2008-04-24 Rancilio Macchine Per Caffe' S.P.A. Device for regulating the level of a liquid in a boiler of a coffee machine
WO2008047306A3 (en) * 2006-10-20 2008-07-17 Rancilio Macchine Caffe Device for regulating the level of a liquid in a boiler of a coffee machine
AU2007311479B2 (en) * 2006-10-20 2013-08-01 Rancilio Group S.p.A. Device for regulating the level of a liquid in a boiler of a coffee machine
US9032865B2 (en) 2006-10-20 2015-05-19 Rancilio Group Spa Device for regulating the level of a liquid in a boiler of a coffee machine

Also Published As

Publication number Publication date
FR441576A (en) 1912-08-10

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