GB1135283A - A switching arrangement responsive to variations of capacitance - Google Patents

A switching arrangement responsive to variations of capacitance

Info

Publication number
GB1135283A
GB1135283A GB214966A GB214966A GB1135283A GB 1135283 A GB1135283 A GB 1135283A GB 214966 A GB214966 A GB 214966A GB 214966 A GB214966 A GB 214966A GB 1135283 A GB1135283 A GB 1135283A
Authority
GB
United Kingdom
Prior art keywords
capacitance
variations
switching arrangement
arrangement responsive
responsive
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
GB214966A
Other languages
English (en)
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.)
Endress and Hauser SE and Co KG
Original Assignee
Endress and Hauser SE and Co KG
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 Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Publication of GB1135283A publication Critical patent/GB1135283A/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
    • 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
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
GB214966A 1965-01-16 1966-01-17 A switching arrangement responsive to variations of capacitance Expired GB1135283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965E0028514 DE1288323B (de) 1965-01-16 1965-01-16 Anordnung zur Ausloesung von Schaltvorgaengen in Abhaengigkeit von Kapazitaetsaenderungen

Publications (1)

Publication Number Publication Date
GB1135283A true GB1135283A (en) 1968-12-04

Family

ID=7073383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB214966A Expired GB1135283A (en) 1965-01-16 1966-01-17 A switching arrangement responsive to variations of capacitance

Country Status (5)

Country Link
CH (1) CH432026A (xx)
DE (1) DE1288323B (xx)
FR (1) FR1469274A (xx)
GB (1) GB1135283A (xx)
NL (1) NL6600334A (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7413475A (nl) * 1974-10-14 1976-04-20 Mattheus Gijsbertus Jozef Arts Niveauregeling.
CA1268814A (en) * 1984-06-13 1990-05-08 Larry Wayne Moore Apparatus and methods for fluid level sensing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE366223C (de) * 1920-09-17 1923-01-05 Robert R A Hoffmann Verfahren zum Anzeigen der Zeigerbewegung empfindlicher Instrumente
DE1031532B (de) * 1953-12-23 1958-06-04 Siemens Ag Anordnung zur Umsetzung mechanischer Groessen in elektrische Groessen in der Fernmeldetechnik, fuer UEberwachungs-schaltungen, Messwertumformer, Messwertverstaerker od. dgl.
DE1791391U (de) * 1957-03-26 1959-07-02 J C Eckardt A G Fuehlereinrichtung fuer die abtastung der zeigerstellung von messwerken.
DE1816103U (de) * 1957-12-10 1960-08-04 J C Eckardt A G Messgroessenumformer.

Also Published As

Publication number Publication date
NL6600334A (xx) 1966-07-18
DE1288323B (de) 1969-01-30
CH432026A (de) 1967-03-15
FR1469274A (fr) 1967-02-10

Similar Documents

Publication Publication Date Title
IL26604A (en) Production of alkylidenebicycloheptenes
GB1134655A (en) Improvements relating to accelerometers
IL24942A (en) Manufacture of elastic yarns
GB1135283A (en) A switching arrangement responsive to variations of capacitance
GB1184384A (en) Production of Haloges
GB1201520A (en) Circuit arrangement to check a section of a switching network
GB1063164A (en) Improvements relating to electromechanical oscillators
IL25800A (en) Vapour-compression distillation
GB1067481A (en) Improvements relating to vacuum switches
GB1138682A (en) Improvements relating to conveyors
GB1026353A (en) Improvements relating to capacitive probes
GB1040076A (en) Capacitive ionization sensing device responsive to a variable condition
GB1065597A (en) Improvements relating to multiple position rotary switches
GB1110296A (en) Improvements relating to castors
GB1065886A (en) Improvements relating to vacuum-switch contacts
CA749491A (en) Switching means responsive to predetermined pressure
CY580A (en) Novel di-esters
CA753294A (en) Production of lower alkanols and lower alkyl bromides
IL29614A (en) Production of concrete
IL31270A0 (en) Production of foamed materials
IE28699L (en) Shrinkage of elastic fabrics
AU6130365A (en) Improvements relating to seamless hosiery
GB1109738A (en) Improvements relating to cots
GB1111793A (en) Improvements relating to cots
IE31351L (en) Production of elastic threads