GB129741A - Improvement in and Means for Indicating the Level of Liquid in a Container or Channel. - Google Patents

Improvement in and Means for Indicating the Level of Liquid in a Container or Channel.

Info

Publication number
GB129741A
GB129741A GB1867017A GB1867017A GB129741A GB 129741 A GB129741 A GB 129741A GB 1867017 A GB1867017 A GB 1867017A GB 1867017 A GB1867017 A GB 1867017A GB 129741 A GB129741 A GB 129741A
Authority
GB
United Kingdom
Prior art keywords
liquid
wire
level
resistance
cooper
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
GB1867017A
Inventor
Bertram George Cooper
Edgar Austin Griffiths
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1867017A priority Critical patent/GB129741A/en
Publication of GB129741A publication Critical patent/GB129741A/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
    • G01F23/246—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 thermal devices

Landscapes

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

Abstract

129,741. Cooper, J. D., (Representative of Cooper, B. G.), and Griffiths, E. A. Dec. 15,1917. I n d i c a t i n g by thermostatic devices.- The level of a liquid is indicated bv measuring the resistance of an electrically heated wire partly immersed in the liquid. The temperature of the part of the wire outside the liquid being higher than that of the part immersed, since the liquid absorbs heat more quickly than the vapour or air above it, the resistance of the wire varies with the liquid level. The wire may be insulated by oxidizing or enamelling it. The platinum or like wire A, B placed in a liquid forms one arm of a wheatstone bridge A, B, D, G, E, C. A fine iron wire resistance J is inserted in the battery circuit so as to maintain an approximately constant current. External variations of temperature are nullified by placing in the opposite arms of the bridge a similar platinum wire kept out of contact with the liquid by a tube K.
GB1867017A 1917-12-15 1917-12-15 Improvement in and Means for Indicating the Level of Liquid in a Container or Channel. Expired GB129741A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1867017A GB129741A (en) 1917-12-15 1917-12-15 Improvement in and Means for Indicating the Level of Liquid in a Container or Channel.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1867017A GB129741A (en) 1917-12-15 1917-12-15 Improvement in and Means for Indicating the Level of Liquid in a Container or Channel.

Publications (1)

Publication Number Publication Date
GB129741A true GB129741A (en) 1919-07-24

Family

ID=32348067

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1867017A Expired GB129741A (en) 1917-12-15 1917-12-15 Improvement in and Means for Indicating the Level of Liquid in a Container or Channel.

Country Status (1)

Country Link
GB (1) GB129741A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441677A (en) * 1945-04-11 1948-05-18 Sam Abrams Detecting and indicating system for explosive gases
US2456617A (en) * 1943-07-30 1948-12-21 Lyndon W Burch Liquid level indicator
US2528537A (en) * 1947-01-02 1950-11-07 Houdry Process Corp System electrically responsive to change in level of material in a receptacle
US2582400A (en) * 1949-01-31 1952-01-15 Smith Stanley James Capacitance type liquid quantity gauge
US2894390A (en) * 1954-08-20 1959-07-14 Honeywell Regulator Co Liquid level sensing means
US2965888A (en) * 1957-01-14 1960-12-20 Honeywell Regulator Co Liquid level sensing apparatus
EP0009252A1 (en) * 1978-09-26 1980-04-02 Siemens Aktiengesellschaft Level gauging device for a container filled at least partially with a liquid
US4716762A (en) * 1985-07-15 1988-01-05 Jaeger Level sensor for use with an electrically insulating liquid

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456617A (en) * 1943-07-30 1948-12-21 Lyndon W Burch Liquid level indicator
US2441677A (en) * 1945-04-11 1948-05-18 Sam Abrams Detecting and indicating system for explosive gases
US2528537A (en) * 1947-01-02 1950-11-07 Houdry Process Corp System electrically responsive to change in level of material in a receptacle
US2582400A (en) * 1949-01-31 1952-01-15 Smith Stanley James Capacitance type liquid quantity gauge
US2894390A (en) * 1954-08-20 1959-07-14 Honeywell Regulator Co Liquid level sensing means
US2965888A (en) * 1957-01-14 1960-12-20 Honeywell Regulator Co Liquid level sensing apparatus
EP0009252A1 (en) * 1978-09-26 1980-04-02 Siemens Aktiengesellschaft Level gauging device for a container filled at least partially with a liquid
US4716762A (en) * 1985-07-15 1988-01-05 Jaeger Level sensor for use with an electrically insulating liquid

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