GB925656A - Improvements relating to electrical apparatus utilising capacity-influenced detecting elements - Google Patents

Improvements relating to electrical apparatus utilising capacity-influenced detecting elements

Info

Publication number
GB925656A
GB925656A GB2926258A GB2926258A GB925656A GB 925656 A GB925656 A GB 925656A GB 2926258 A GB2926258 A GB 2926258A GB 2926258 A GB2926258 A GB 2926258A GB 925656 A GB925656 A GB 925656A
Authority
GB
United Kingdom
Prior art keywords
web
detector
insulating material
conductor
influenced
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
GB2926258A
Inventor
Eric Lewis
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.)
THOMAS IND AUTOMATION Ltd
Original Assignee
THOMAS IND AUTOMATION 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 THOMAS IND AUTOMATION Ltd filed Critical THOMAS IND AUTOMATION Ltd
Priority to GB2926258A priority Critical patent/GB925656A/en
Publication of GB925656A publication Critical patent/GB925656A/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
    • G01F23/26—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
    • G01F23/268—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 mounting arrangements of probes
    • 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
    • G01F23/265—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 for discrete levels
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/12—Arrangements for exhibiting specific transmission characteristics

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

925,656. Determining levels of fluent materials. THOMAS INDUSTRIAL AUTOMATION Ltd. Aug. 17, 1959 [Sept. 12, 1958], No. 29262/58. Class 37. A detecting element for a capacitive type measuring apparatus comprises two parallel conductors each of uniform circular section throughout its length and supported by mounting means, the two conductors being separated by the width of a thin web of insulating material which is also of uniform section throughout its length. Figs. 1, 2 show an element comprising a rigid conductor 1 supporting a smaller conductor 3 by means of a web 2 of insulating material. The detector may be mounted as shown for use as a level detector for powder or granular material, the conductor 1 being earthed so that accumulation of powder on its upper surface will not give erroneous indication. The detector may be inverted for use with viscous fluids. Fig. 3 shows a vertical detector comprising wires 5, 6 of the same diameter moulded into the edges of a web 7 of insulating material. The Specification refers to mounting means 8 and tensioning of the web 7 by means of a weight 9.
GB2926258A 1958-09-12 1958-09-12 Improvements relating to electrical apparatus utilising capacity-influenced detecting elements Expired GB925656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2926258A GB925656A (en) 1958-09-12 1958-09-12 Improvements relating to electrical apparatus utilising capacity-influenced detecting elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2926258A GB925656A (en) 1958-09-12 1958-09-12 Improvements relating to electrical apparatus utilising capacity-influenced detecting elements

Publications (1)

Publication Number Publication Date
GB925656A true GB925656A (en) 1963-05-08

Family

ID=10288739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2926258A Expired GB925656A (en) 1958-09-12 1958-09-12 Improvements relating to electrical apparatus utilising capacity-influenced detecting elements

Country Status (1)

Country Link
GB (1) GB925656A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710244A (en) * 1971-01-11 1973-01-09 G Rauchwerger Capacitance probe for detecting moisture with very long cables
US3824460A (en) * 1973-04-02 1974-07-16 R Gustafson Leakage sensor
US4122718A (en) * 1975-07-16 1978-10-31 Gustafson Reuben V Liquid level sensor
US4389900A (en) * 1979-06-14 1983-06-28 The United States Of America As Represented By The Secretary Of The Interior Capacitance probe sensor device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710244A (en) * 1971-01-11 1973-01-09 G Rauchwerger Capacitance probe for detecting moisture with very long cables
US3824460A (en) * 1973-04-02 1974-07-16 R Gustafson Leakage sensor
DE2415640A1 (en) * 1973-04-02 1974-10-17 Reuben V Gustafson CAPACITIVE SENSOR FOR DETERMINING THE PRESENCE OF A LIQUID
US4122718A (en) * 1975-07-16 1978-10-31 Gustafson Reuben V Liquid level sensor
US4389900A (en) * 1979-06-14 1983-06-28 The United States Of America As Represented By The Secretary Of The Interior Capacitance probe sensor device

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