GB1391867A - Liquid level indicating systems - Google Patents

Liquid level indicating systems

Info

Publication number
GB1391867A
GB1391867A GB5008873A GB5008873A GB1391867A GB 1391867 A GB1391867 A GB 1391867A GB 5008873 A GB5008873 A GB 5008873A GB 5008873 A GB5008873 A GB 5008873A GB 1391867 A GB1391867 A GB 1391867A
Authority
GB
United Kingdom
Prior art keywords
liquid level
transistor
liquid
level indicating
electrode
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
GB5008873A
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.)
AlliedSignal Automotive Espana SA
Original Assignee
Bendiberica SA
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 Bendiberica SA filed Critical Bendiberica SA
Publication of GB1391867A publication Critical patent/GB1391867A/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
    • G01F23/24—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 resistance of resistors due to contact with conductor fluid
    • G01F23/241—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 resistance of resistors due to contact with conductor fluid for discrete levels
    • G01F23/243—Schematic arrangements of probes combined with measuring circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Level Indicators Using A Float (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Amplifiers (AREA)

Abstract

1391867 Liquid level indication BENDIBERICA SA 26 Oct 1973 [7 Nov 1972] 50088/73 Heading G1H In a liquid level indicating device in which two electrodes E 1 , E 2 are immersed in a liquid the level of which is to be measured the electrode E 2 is directly connected to the gate electrode of a transistor TR 1 and the source electrode of transistor TR 1 is connected to the base of transistor TR2 the collector of which is connected to a negative source - Vi and the arrangement is such that when the liquid is out of contact with electrodes E 1 , E 2 the device will conduct and an indicator, such as a lamp, buzzer or relay, will operate an audible or visual indicating device. A semi-conductor device is also described with a positive voltage source.
GB5008873A 1972-11-07 1973-10-26 Liquid level indicating systems Expired GB1391867A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES408556A ES408556A1 (en) 1972-11-07 1972-11-07 Liquid level indicating systems

Publications (1)

Publication Number Publication Date
GB1391867A true GB1391867A (en) 1975-04-23

Family

ID=8462631

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5008873A Expired GB1391867A (en) 1972-11-07 1973-10-26 Liquid level indicating systems

Country Status (6)

Country Link
AU (1) AU6222273A (en)
DE (1) DE2355244A1 (en)
ES (1) ES408556A1 (en)
FR (1) FR2205663B1 (en)
GB (1) GB1391867A (en)
IT (1) IT996842B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2246438A (en) * 1990-07-28 1992-01-29 Fisher Thomas James A water level warning device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3136864C2 (en) * 1981-09-17 1984-04-19 Eaton S.A.M., Monaco Level indicator
FR2567267B1 (en) * 1984-07-05 1989-01-13 Penanguer Jacques DEVICE FOR REMOTE SIGNALING OF THE PRESENCE OF A CONDUCTIVE LIQUID AT A SPECIFIED POINT
ES2023310A6 (en) * 1990-03-22 1992-01-01 Transpar Iberica Sa Liquid level control device.
DE102010029307A1 (en) * 2010-05-26 2011-12-01 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance with a container and a level measuring device and corresponding level measurement method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465588A (en) * 1967-09-11 1969-09-09 Bendix Corp Floatless electrical fluid level gauge
GB1313497A (en) * 1969-08-15 1973-04-11 Lucas Industries Ltd Liquid level detection circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2246438A (en) * 1990-07-28 1992-01-29 Fisher Thomas James A water level warning device

Also Published As

Publication number Publication date
DE2355244A1 (en) 1974-05-16
FR2205663B1 (en) 1977-05-27
IT996842B (en) 1975-12-10
ES408556A1 (en) 1975-11-01
AU6222273A (en) 1975-05-08
FR2205663A1 (en) 1974-05-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee