FR1469274A - Dispositif pour déclencher un processus de commande ou de commutation en fonction des variations d'une capacité - Google Patents

Dispositif pour déclencher un processus de commande ou de commutation en fonction des variations d'une capacité

Info

Publication number
FR1469274A
FR1469274A FR69046826A FR69046826A FR1469274A FR 1469274 A FR1469274 A FR 1469274A FR 69046826 A FR69046826 A FR 69046826A FR 69046826 A FR69046826 A FR 69046826A FR 1469274 A FR1469274 A FR 1469274A
Authority
FR
France
Prior art keywords
initiating
capacitance
variations
function
control
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
FR69046826A
Other languages
English (en)
French (fr)
Inventor
Hans-Juergen Franz
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
Application granted granted Critical
Publication of FR1469274A publication Critical patent/FR1469274A/fr
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)
FR69046826A 1965-01-16 1966-01-15 Dispositif pour déclencher un processus de commande ou de commutation en fonction des variations d'une capacité Expired FR1469274A (fr)

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
FR1469274A true FR1469274A (fr) 1967-02-10

Family

ID=7073383

Family Applications (1)

Application Number Title Priority Date Filing Date
FR69046826A Expired FR1469274A (fr) 1965-01-16 1966-01-15 Dispositif pour déclencher un processus de commande ou de commutation en fonction des variations d'une capacité

Country Status (5)

Country Link
CH (1) CH432026A (US20080293856A1-20081127-C00150.png)
DE (1) DE1288323B (US20080293856A1-20081127-C00150.png)
FR (1) FR1469274A (US20080293856A1-20081127-C00150.png)
GB (1) GB1135283A (US20080293856A1-20081127-C00150.png)
NL (1) NL6600334A (US20080293856A1-20081127-C00150.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0164679A2 (en) * 1984-06-13 1985-12-18 Abbott Laboratories Apparatus for fluid level sensing

Families Citing this family (1)

* 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.

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.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0164679A2 (en) * 1984-06-13 1985-12-18 Abbott Laboratories Apparatus for fluid level sensing
EP0164679A3 (en) * 1984-06-13 1988-05-11 Abbott Laboratories Apparatus and methods for fluid level sensing

Also Published As

Publication number Publication date
DE1288323B (de) 1969-01-30
NL6600334A (US20080293856A1-20081127-C00150.png) 1966-07-18
CH432026A (de) 1967-03-15
GB1135283A (en) 1968-12-04

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