GB1288748A - - Google Patents

Info

Publication number
GB1288748A
GB1288748A GB1288748DA GB1288748A GB 1288748 A GB1288748 A GB 1288748A GB 1288748D A GB1288748D A GB 1288748DA GB 1288748 A GB1288748 A GB 1288748A
Authority
GB
United Kingdom
Prior art keywords
change
terminals
liquid
level
abrupt
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
Other languages
English (en)
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 filed Critical
Publication of GB1288748A publication Critical patent/GB1288748A/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
    • G01F23/244—Schematic arrangements of probes combined with measuring circuits comprising oscillating circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
    • G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
    • G01K7/245—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit in an oscillator circuit

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Nonlinear Science (AREA)
  • Level Indicators Using A Float (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
GB1288748D 1968-11-20 1968-11-20 Expired GB1288748A (US20030220297A1-20031127-C00009.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5500868 1968-11-20

Publications (1)

Publication Number Publication Date
GB1288748A true GB1288748A (US20030220297A1-20031127-C00009.png) 1972-09-13

Family

ID=10472696

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1288748D Expired GB1288748A (US20030220297A1-20031127-C00009.png) 1968-11-20 1968-11-20

Country Status (1)

Country Link
GB (1) GB1288748A (US20030220297A1-20031127-C00009.png)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2207271A2 (US20030220297A1-20031127-C00009.png) * 1972-11-17 1974-06-14 Lucas Electrical Co Ltd
GB2254429A (en) * 1991-04-04 1992-10-07 Birt Electronic Systems Ltd Liquid level sensor
EP2249134A1 (de) * 2009-05-06 2010-11-10 Robert Bosch GmbH Füllstandsdetektionsvorrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2207271A2 (US20030220297A1-20031127-C00009.png) * 1972-11-17 1974-06-14 Lucas Electrical Co Ltd
GB2254429A (en) * 1991-04-04 1992-10-07 Birt Electronic Systems Ltd Liquid level sensor
EP2249134A1 (de) * 2009-05-06 2010-11-10 Robert Bosch GmbH Füllstandsdetektionsvorrichtung

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Legal Events

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