CH432026A - Anordnung zur Auslösung von Schaltvorgängen in Abhängigkeit von Kapazitätsänderungen - Google Patents

Anordnung zur Auslösung von Schaltvorgängen in Abhängigkeit von Kapazitätsänderungen

Info

Publication number
CH432026A
CH432026A CH14366A CH14366A CH432026A CH 432026 A CH432026 A CH 432026A CH 14366 A CH14366 A CH 14366A CH 14366 A CH14366 A CH 14366A CH 432026 A CH432026 A CH 432026A
Authority
CH
Switzerland
Prior art keywords
capacitance
oscillator
circuit
rectifier
transistor
Prior art date
Application number
CH14366A
Other languages
German (de)
English (en)
Inventor
Franz Hans-Juergen
Original Assignee
Endress Hauser Gmbh Co
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 Hauser Gmbh Co filed Critical Endress Hauser Gmbh Co
Publication of CH432026A publication Critical patent/CH432026A/de

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)
CH14366A 1965-01-16 1966-01-05 Anordnung zur Auslösung von Schaltvorgängen in Abhängigkeit von Kapazitätsänderungen CH432026A (de)

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
CH432026A true CH432026A (de) 1967-03-15

Family

ID=7073383

Family Applications (1)

Application Number Title Priority Date Filing Date
CH14366A CH432026A (de) 1965-01-16 1966-01-05 Anordnung zur Auslösung von Schaltvorgängen in Abhängigkeit von Kapazitätsänderungen

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
GB1135283A (en) 1968-12-04
FR1469274A (fr) 1967-02-10

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