DE29522232U1 - Sensor arrangement - Google Patents

Sensor arrangement

Info

Publication number
DE29522232U1
DE29522232U1 DE29522232U DE29522232U DE29522232U1 DE 29522232 U1 DE29522232 U1 DE 29522232U1 DE 29522232 U DE29522232 U DE 29522232U DE 29522232 U DE29522232 U DE 29522232U DE 29522232 U1 DE29522232 U1 DE 29522232U1
Authority
DE
Germany
Prior art keywords
sensor
arrangement according
sensor arrangement
measuring
liquid
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 - Lifetime
Application number
DE29522232U
Other languages
German (de)
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.)
Daimler AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Priority to DE29522232U priority Critical patent/DE29522232U1/en
Priority claimed from DE19511556A external-priority patent/DE19511556C1/en
Publication of DE29522232U1 publication Critical patent/DE29522232U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/226—Construction of measuring vessels; Electrodes therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; viscous liquids; paints; inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2888—Lubricating oil characteristics, e.g. deterioration

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (15)

1. Sensoranordnung zur Bestimmung des Zustandes einer Flüssigkeit in einem Behälter mit einem ersten Sensor mit einen ersten, mit der Flüssigkeit gefüllten Meßraum (M1) bildenden Elektroden (A1, B1) und mit elektrischen Einrichtungen zur Messung der Impedanz des ersten Sensors und zur Ableitung eines Zustandssignals, dadurch gekennzeichnet, daß ein zweiter Sensor mit einen zweiten Meßraum (M2) bildenden Elektroden (A2, B2) als Füllstandssensor mit in Abhängigkeit vom Füllstand in dem Behälter teilweise mit der Flüssigkeit gefülltem Meßraum vorhanden ist, und daß die elektrischen Einrichtungen aus der Messung der Impedanz des zweiten Sensors ein Füllstandssignal ableiten, wobei die gemessene Impedanz des ersten Sensors zur Kalibrierung der Impedanzmessung des zweiten Sensors herangezogen ist.1. Sensor arrangement for determining the state of a liquid in a container with a first sensor with a first, with the liquid filled measuring chamber (M1) forming electrodes (A1, B1) and with electrical devices for measuring the impedance of the first sensor and for deriving a State signal, characterized in that a second sensor with electrodes (A2, B2) forming a second measuring chamber (M2) is present as a filling level sensor with a measuring chamber partially filled with the liquid depending on the filling level, and in that the electrical devices from the measurement Derive a level signal from the impedance of the second sensor, the measured impedance of the first sensor being used to calibrate the impedance measurement of the second sensor. 2. Sensoranordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Meßraum (M2) des zweiten Sensors über den Meßraum (M1) des ersten Sensors mit der Flüssigkeit in dem Behälter in Verbindung steht. 2. Sensor arrangement according to claim 1, characterized in that the Measuring space (M2) of the second sensor over the measuring space (M1) of the the first sensor is connected to the liquid in the container.   3. Sensoranordnung nach Anspruch 1 oder Anspruch 2, gekennzeichnet durch einen Hilfsraum (R), der mit der Flüssigkeit in dem Behälter über den Meßraum (M1) des ersten Sensors in Verbindung steht und höher liegt als dieser.3. Sensor arrangement according to claim 1 or claim 2, characterized through an auxiliary space (R) which is over with the liquid in the container the measuring chamber (M1) of the first sensor is connected and higher lies as this. 4. Sensoranordnung nach Anspruch 3, dadurch gekennzeichnet, daß der horizontale Querschnitt des Hilfsraums (R) größer ist als der des Meßraums des zweiten Sensors.4. Sensor arrangement according to claim 3, characterized in that the horizontal cross section of the auxiliary room (R) is larger than that of the Measuring room of the second sensor. 5. Sensoranordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Sensoren jeweils aus koaxialen zylindrischen Elektroden gebildet sind.5. Sensor arrangement according to one of claims 1 to 4, characterized characterized in that the sensors each consist of coaxial cylindrical Electrodes are formed. 6. Sensoranordnung nach Anspruch 5, dadurch gekennzeichnet, daß die beiden Sensoren eine gemeinsame äußere Zylinderelektrode und getrennte axial hintereinander angeordnete innere Zylinderelektroden umfassen.6. Sensor arrangement according to claim 5, characterized in that the two sensors have a common outer cylinder electrode and separate inner cylinder electrodes arranged axially one behind the other include. 7. Sensoranordnung nach Anspruch 6, dadurch gekennzeichnet, daß die inneren Zylinderelektroden mit Isolierkörpern als eine in die äußere Elektrode steckbare bauliche Einheit ausgebildet sind.7. Sensor arrangement according to claim 6, characterized in that the inner cylinder electrodes with insulating bodies as one in the outer Electrode plug-in structural unit are formed. 8. Sensoranordnung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß ausschließlich eine oder mehrere Öffnungen zur Zuführung der Flüssigkeit in die Meßräume im unteren Bereich der Sensoranordnung vorgesehen sind. 8. Sensor arrangement according to one of the preceding claims, characterized characterized in that only one or more openings for Feed the liquid into the measuring rooms in the lower area of the Sensor arrangement are provided.   9. Sensoranordnung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß ein Temperaturfühler vorgesehen ist, dessen Meßwert bei der Impedanzwertbestimmung berücksichtigt wird.9. Sensor arrangement according to one of the preceding claims, characterized characterized in that a temperature sensor is provided, the Measured value is taken into account when determining the impedance value. 10. Sensoranordnung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die beiden Sensoren eine vergleichbare Kapazität aufweisen.10. Sensor arrangement according to one of the preceding claims, characterized characterized in that the two sensors have a comparable capacity exhibit. 11. Sensoranordnung nach Anspruch 9, dadurch gekennzeichnet, daß eine Multiplexeinheit vorgesehen ist, die geeignet ist, die beiden Sensoren zeitlich abwechselnd mit einer gemeinsamen Auswerteelektronik zu verbinden.11. Sensor arrangement according to claim 9, characterized in that a Multiplex unit is provided, which is suitable for the two sensors alternating with a common evaluation electronics connect. 12. Sensoranordnung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß eine Elektrode des zweiten Sensors eine Kerbe oder einen Einschnitt und die Auswertelektronik eine Differenzierstufe aufweist, mit deren Hilfe eine Kalibrierung des Impedanzwertes des zweiten Sensors ermöglicht ist.12. Sensor arrangement according to one of the preceding claims, characterized characterized in that an electrode of the second sensor has a notch or an incision and the evaluation electronics a differentiation stage has, with the help of a calibration of the impedance value of the second sensor is enabled. 13. Sensoranordnung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Auswerteelektronik zur Auswertung des Zustandssignals des ersten Sensors so ausgebildet ist, daß das Zustandssignal zur Erkennung von niedrigen Füllständen verwendet wird. 13. Sensor arrangement according to one of the preceding claims, characterized characterized in that the evaluation electronics for evaluating the State signal of the first sensor is designed so that the Status signal used to detect low levels becomes.   14. Sensoranordnung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die dem ersten Sensor zugeordnete elektronische Einrichtung eine Vergleichsschaltung enthält, die geeignet ist Referenzwerte für verschiedene Zustände mit gemessenen Impedanzwerten zu vergleichen und daraus ein Zusatndssignal abzuleiten.14. Sensor arrangement according to one of the preceding claims, characterized characterized in that the electronic associated with the first sensor Device contains a comparison circuit that is suitable Reference values for different states with measured To compare impedance values and an additional signal to derive. 15. Sensoranordnung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß ausschließlich im unteren Bereich der Sensoranordnung eine oder mehrere Öffnungen zur Zuführung der Flüssigkeit in die Meßräume vorgesehen sind.15. Sensor arrangement according to one of the preceding claims, characterized characterized that only in the lower area of the Sensor arrangement one or more openings for feeding the Liquid are provided in the measuring rooms.
DE29522232U 1995-03-29 1995-03-29 Sensor arrangement Expired - Lifetime DE29522232U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29522232U DE29522232U1 (en) 1995-03-29 1995-03-29 Sensor arrangement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19511556A DE19511556C1 (en) 1995-03-29 1995-03-29 Electrical sensor for determn. of state of liq. in container
DE29522232U DE29522232U1 (en) 1995-03-29 1995-03-29 Sensor arrangement

Publications (1)

Publication Number Publication Date
DE29522232U1 true DE29522232U1 (en) 2001-01-18

Family

ID=26013869

Family Applications (1)

Application Number Title Priority Date Filing Date
DE29522232U Expired - Lifetime DE29522232U1 (en) 1995-03-29 1995-03-29 Sensor arrangement

Country Status (1)

Country Link
DE (1) DE29522232U1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008054479A1 (en) * 2008-12-10 2010-06-17 Brita Gmbh Conductivity measuring device and liquid treatment device
US8171802B2 (en) 2008-03-28 2012-05-08 Brita Gmbh Method for measuring the volume flow of electrically conductive liquids through a vessel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8171802B2 (en) 2008-03-28 2012-05-08 Brita Gmbh Method for measuring the volume flow of electrically conductive liquids through a vessel
DE102008054479A1 (en) * 2008-12-10 2010-06-17 Brita Gmbh Conductivity measuring device and liquid treatment device

Similar Documents

Publication Publication Date Title
DE19516809C1 (en) Capacitive liq. level sensor based on cores of flexible ribbon cable for e.g. milk tank
EP2400275B1 (en) Contactless fill level measurement of liquids
DE2515065C2 (en) Standing height measuring device for liquid containers
EP0447514B1 (en) Temperature measurement circuit
EP1204848A1 (en) Method for measuring level and level sensor
DE102008044312A1 (en) Detecting device for detecting a component density contained in a fuel mixture
CH683037A5 (en) Electrochemical gas sensor.
EP1586909A1 (en) Method of determining the offset drift of a Wheatstone bridge
EP1466170B1 (en) Measuring assembly for determining a characteristic of a fluid
WO2020011776A1 (en) Devices and methods for capacitively detecting foam in liquid containers
DE602005002598T2 (en) Measuring device for the detection and analysis of partial discharges in electrical machines
DE4136639C2 (en) Device for the electrical determination of undissolved gases in liquid-filled high-voltage systems and devices as the basis for error detection and monitoring of these systems and devices
EP3230700A1 (en) Probe unit
EP3652508A1 (en) Capacitive measuring method, and filling level measuring device
DE29522232U1 (en) Sensor arrangement
EP0612412B1 (en) Polarity testing process and device for electrolytic capacitors
EP0492330A1 (en) Capacitive inclination sensor
EP1881307A2 (en) Filling level sensor for fluids and/or bulk goods
DE102012025037C5 (en) Method for capacitive seat occupancy detection for vehicle seats
DE19850247C1 (en) Method for level measurement of a liquid medium acting as a dielectric for a capacitor arrangement in a container
WO2004086069A1 (en) Method for testing components of a circuit board
DE4116355C2 (en) Sensor
EP2844989B1 (en) Circuit arrangement for measuring a sensor element capacitance
DE10337967A1 (en) Sensor with integral identification unit, e.g. for use in research and development, has identification unit contained with the connection plug with a separate terminal that is connected to the connection cable shielding
DE19601077A1 (en) Force sensor esp. pressure sensor

Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20010222

R150 Term of protection extended to 6 years

Effective date: 20010118

R151 Term of protection extended to 8 years

Effective date: 20010410

R152 Term of protection extended to 10 years

Effective date: 20030324

R071 Expiry of right