DE102005011614A1 - Device for capacitative filling level measurement in fluid has aqueous and non-aqueous liquids in metallic or non-metallic containers whereby measuring probe can be adjusted by its design at shape of tank or can be operated freely installed - Google Patents
Device for capacitative filling level measurement in fluid has aqueous and non-aqueous liquids in metallic or non-metallic containers whereby measuring probe can be adjusted by its design at shape of tank or can be operated freely installed Download PDFInfo
- Publication number
- DE102005011614A1 DE102005011614A1 DE200510011614 DE102005011614A DE102005011614A1 DE 102005011614 A1 DE102005011614 A1 DE 102005011614A1 DE 200510011614 DE200510011614 DE 200510011614 DE 102005011614 A DE102005011614 A DE 102005011614A DE 102005011614 A1 DE102005011614 A1 DE 102005011614A1
- Authority
- DE
- Germany
- Prior art keywords
- metallic
- aqueous
- measuring probe
- probe
- design
- 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.)
- Withdrawn
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
- G01F23/266—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 measuring circuits therefor
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
Die vorliegende Erfindung bezieht sich auf eine Vorrichtung zur kapazitiven Füllstandsmessung bei Flüssigkeiten in einem metallischen und nicht metallischen Behälter nach dem Oberbegriff des Anspruchs 1.The The present invention relates to a device for capacitive Level measurement at liquids in a metallic and non - metallic container according to the preamble of Claim 1.
Bei einer derartigen aus etlichen Patenten bekannten Vorrichtung zur kapazitiven Füllstandsmessung in Behältern, bei denen die Sonden in verschiedenen Anordnungen aus gegeneinander isolierten, leitenden Flächen bestehen, die einen Kondensator im elektrischen Sinne darstellen, wird eine Füllstandsänderung über eine Änderung der Kapazität direkt gezeigt, die dann durch geeignete Meßmethoden oder Umwandlungsmethoden visuell oder elektrisch dargestellt werden kann.at Such known from several patents device for Capacitive level measurement in containers, where the probes in different arrangements of against each other isolated, conductive surfaces consist of a capacitor in the electrical sense, is a level change over a change the capacity directly shown then by appropriate measuring methods or conversion methods can be displayed visually or electrically.
Schwierigkeit dieser Methode ist die Anordnung und Installation der als Kondensator fungierenden, gegeneinander isolierten Flächen, die meistens auf einem Träger aufgebaut sein müssen, oder als Rohr-in-Rohr-System ausgeführt werden. Nun sind bei wässrigen Lösungen die dielektrischen Eigenschaften so optimal, dass die Anordnung der Kondensatorflächen nicht wichtig ist, hingegen sind bei nicht wässrigen Flüssigkeiten die dielektrischen schlechter, als bei wässrigen Flüssigkeiten.difficulty This method is the arrangement and installation of the as a capacitor functioning, mutually isolated surfaces, mostly on one carrier have to be built or as a pipe-in-pipe system. Well are with watery solutions the dielectric properties so optimal that the arrangement the capacitor surfaces is not important, however, in non-aqueous liquids, the dielectric is poorer, as in aqueous Liquids.
Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung zur kapazitiven Füllstandsmessung für wässrige und nicht wässrige Flüssigkeiten in Behältern der eingangs genannten Art zu schaffen, die die Vorzüge der schnellen, billigen und flexiblen Ausführung und Installation der Messsonden schafft.task The present invention is a device for capacitive Level measurement for aqueous and non-aqueous liquids in containers of the type mentioned at the outset, which takes advantage of the fast, cheap and flexible design and installation of the probes creates.
Zur Lösung dieser Aufgabe sind bei einer Vorrichtung zur kapazitiven Füllstandsmessung der genannten Art die im Anspruch 1 angegebenen Merkmale vorgesehen.to solution This object is achieved in a device for capacitive level measurement said type provided the features specified in claim 1.
Durch die erfindungsgemäßen Maßnahmen ist eine einfache Sondenbauweise und eine leichte Installation der Sonde auch in komplizierten Behältern erreicht, die eine weitgehend störungsfreie und genaue Messung des Füllstandes zulassen.By the measures according to the invention a simple probe design and easy installation of the probe even in complicated containers achieved, which is a largely trouble-free and accurate level measurement allow.
Gemäß Ausführungsform sind in vorteilhafter Weise die Merkmale nach Anspruch 2 und/oder 3 vorgesehen, was in einfacher Weise zum Einen die Form eines Behälters berücksichtigt, und zum Anderen die Verpackung der Messsonde beinhaltet. Der Aufbau der elektrischen Schaltung im Prinzip ergibt sich durch die Merkmale des Anspruchs 4. According to embodiment are advantageously the features of claim 2 and / or 3 provided, which in a simple way takes into account the shape of a container, and on the other hand, the packaging of the probe includes. The structure the electrical circuit in principle results from the features of claim 4.
Weitere Einzelheiten der Erfindung sind der folgenden Beschreibung zu entnehmen, in der die Erfindung anhand der in den Zeichnungen erläuterten Ausführungen näher beschrieben, dargestellt und erläutert ist.Further Details of the invention can be taken from the following description, in the invention with reference to the embodiments explained in the drawings described in more detail, illustrated and explained is.
Es zeigen:It demonstrate:
Aufgrund der günstigen dielektrischen Eigenschaften bei wässrigen Lösungen, z.B. Harnstoffaditive bei Dieselfahrzeugen, Frisch- und Brauchwasser ist die Lage und die Ausführung des kapazitiven Füllstandssensors einfach. Die Ausführung der erfindungsgemäßen Art besteht aus zwei nebeneinander oder parallel verlaufenden zueinander isolierten Drähten, die vorteilhafterweise als Dipolkabel im PE-Verguß oder Parallelantennenkabel ausgeführt eine billige Form der Sonde darstellen.by virtue of the cheap dielectric properties in aqueous solutions, e.g. Harnstoffaditive in diesel vehicles, fresh and hot water is the location and execution the capacitive level sensor easy. Execution the type of the invention consists of two side by side or parallel to each other insulated wires, the advantageously as a dipole cable in PE-casting or parallel antenna cable executed one represent cheap form of the probe.
Der
in der
Der
Sensor (
Die
parallel angeordneten Leiter des Sensors (
Das
Meßsystem
nutzt aufgrund der optimalen dielektrischen Eigenschaften von wässrigen
Lösungen
die parasitären
Kapazitäten,
um den Füllstand
in einem Behälter
zu bestimmen. Die in
Die
in
Die
zur Umsetzung auf verarbeitbare elektrische Größen benötigte Elektronik befindet sich
im Kopf (
Figurenliste:List of figures:
- 11
- EinzelleiterSingle conductor
- 22
- Isolatorinsulator
- 33
- kapazitives Feldcapacitive field
- 44
- Elektronische Schaltungelectronic circuit
- 55
- metallischer oder nicht metallischer Behältermetallic or non-metallic container
- 66
- Flüssigkeitliquid
- 77
- Abschirmrohr, metallisch oder nicht metallischshielding, metallic or non-metallic
- 55
- Eingangsschaltunginput circuit
- 99
- Mikrocomputermicrocomputer
- 1010
- Sensorsensor
- 1111
- AusgangsverstärkerschaltungOutput amplifier circuit
- 1414
- Sensorkopfsensor head
- 2020
- Isolationisolation
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510011614 DE102005011614A1 (en) | 2005-03-07 | 2005-03-07 | Device for capacitative filling level measurement in fluid has aqueous and non-aqueous liquids in metallic or non-metallic containers whereby measuring probe can be adjusted by its design at shape of tank or can be operated freely installed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510011614 DE102005011614A1 (en) | 2005-03-07 | 2005-03-07 | Device for capacitative filling level measurement in fluid has aqueous and non-aqueous liquids in metallic or non-metallic containers whereby measuring probe can be adjusted by its design at shape of tank or can be operated freely installed |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005011614A1 true DE102005011614A1 (en) | 2006-09-14 |
Family
ID=36914787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200510011614 Withdrawn DE102005011614A1 (en) | 2005-03-07 | 2005-03-07 | Device for capacitative filling level measurement in fluid has aqueous and non-aqueous liquids in metallic or non-metallic containers whereby measuring probe can be adjusted by its design at shape of tank or can be operated freely installed |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005011614A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10057934A1 (en) * | 2000-11-22 | 2003-12-11 | Volkswagen Ag | Measuring liquid volume in container, especially fuel tank, involves using liquid level determined by detecting proportion of enclosing walls off container covered by liquid |
EP1435512A1 (en) * | 2001-09-04 | 2004-07-07 | Alubo Co., Ltd. | Capacitance coupled sensor and substance detecting method using capacitance-coupled sensor |
-
2005
- 2005-03-07 DE DE200510011614 patent/DE102005011614A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10057934A1 (en) * | 2000-11-22 | 2003-12-11 | Volkswagen Ag | Measuring liquid volume in container, especially fuel tank, involves using liquid level determined by detecting proportion of enclosing walls off container covered by liquid |
EP1435512A1 (en) * | 2001-09-04 | 2004-07-07 | Alubo Co., Ltd. | Capacitance coupled sensor and substance detecting method using capacitance-coupled sensor |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |