DE1288323B - Anordnung zur Ausloesung von Schaltvorgaengen in Abhaengigkeit von Kapazitaetsaenderungen - Google Patents

Anordnung zur Ausloesung von Schaltvorgaengen in Abhaengigkeit von Kapazitaetsaenderungen

Info

Publication number
DE1288323B
DE1288323B DE1965E0028514 DEE0028514A DE1288323B DE 1288323 B DE1288323 B DE 1288323B DE 1965E0028514 DE1965E0028514 DE 1965E0028514 DE E0028514 A DEE0028514 A DE E0028514A DE 1288323 B DE1288323 B DE 1288323B
Authority
DE
Germany
Prior art keywords
oscillator
circuit
capacitance
rectifier
voltage
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.)
Pending
Application number
DE1965E0028514
Other languages
German (de)
English (en)
Inventor
Franz Hans Juergen
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
Priority to DE1965E0028514 priority Critical patent/DE1288323B/de
Priority to CH14366A priority patent/CH432026A/de
Priority to NL6600334A priority patent/NL6600334A/xx
Priority to FR69046826A priority patent/FR1469274A/fr
Priority to GB214966A priority patent/GB1135283A/en
Publication of DE1288323B publication Critical patent/DE1288323B/de
Pending 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)
DE1965E0028514 1965-01-16 1965-01-16 Anordnung zur Ausloesung von Schaltvorgaengen in Abhaengigkeit von Kapazitaetsaenderungen Pending DE1288323B (de)

Priority Applications (5)

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
CH14366A CH432026A (de) 1965-01-16 1966-01-05 Anordnung zur Auslösung von Schaltvorgängen in Abhängigkeit von Kapazitätsänderungen
NL6600334A NL6600334A (enrdf_load_html_response) 1965-01-16 1966-01-11
FR69046826A 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
GB214966A GB1135283A (en) 1965-01-16 1966-01-17 A switching arrangement responsive to variations of capacitance

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
DE1288323B true DE1288323B (de) 1969-01-30

Family

ID=7073383

Family Applications (1)

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

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2545620A1 (de) * 1974-10-14 1976-04-22 Matheus Gijsbertus Jozef Arts Niveaumessung und -reglung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1268814A (en) * 1984-06-13 1990-05-08 Larry Wayne Moore Apparatus and methods for fluid level sensing

Citations (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.

Patent Citations (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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2545620A1 (de) * 1974-10-14 1976-04-22 Matheus Gijsbertus Jozef Arts Niveaumessung und -reglung

Also Published As

Publication number Publication date
FR1469274A (fr) 1967-02-10
NL6600334A (enrdf_load_html_response) 1966-07-18
GB1135283A (en) 1968-12-04
CH432026A (de) 1967-03-15

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977