DE102005026491A1 - Electrochemical gas sensor arrangement e.g. for gas sensor, has test electrodes positioned over diffusion part and being in gas flow connection to environment - Google Patents
Electrochemical gas sensor arrangement e.g. for gas sensor, has test electrodes positioned over diffusion part and being in gas flow connection to environment Download PDFInfo
- Publication number
- DE102005026491A1 DE102005026491A1 DE200510026491 DE102005026491A DE102005026491A1 DE 102005026491 A1 DE102005026491 A1 DE 102005026491A1 DE 200510026491 DE200510026491 DE 200510026491 DE 102005026491 A DE102005026491 A DE 102005026491A DE 102005026491 A1 DE102005026491 A1 DE 102005026491A1
- Authority
- DE
- Germany
- Prior art keywords
- gas sensor
- gas flow
- sensor arrangement
- electrochemical
- gas
- 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.)
- Granted
Links
- 238000009792 diffusion process Methods 0.000 title claims abstract description 18
- 238000012360 testing method Methods 0.000 title abstract description 9
- 239000003792 electrolyte Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 56
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 abstract 1
- 239000012080 ambient air Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003958 fumigation Methods 0.000 description 1
- 229920001600 hydrophobic polymer Polymers 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
-
- 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
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/404—Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid, e.g. Clark-type oxygen sensors
-
- 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
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
Abstract
Description
Die Erfindung betrifft eine elektrochemische Gassensoranordnung gemäß Anspruch 1.The The invention relates to an electrochemical gas sensor arrangement according to claim 1.
Es sind viele elektrochemische Gassensoranordnungen bekannt geworden, die sich speziell durch einen unterschiedlichen Aufbau oder auch im Hinblick auf die verwendeten Materialien der Elektroden, der Elektrolyten, des Gehäuses oder der Diffusionsbegrenzungen für das Messgas unterscheiden.It Many electrochemical gas sensor arrangements have become known, which is specifically due to a different structure or also with regard to the materials used in the electrodes, the Electrolytes, of the housing or distinguish the diffusion limitations for the sample gas.
So
geht beispielsweise aus
Bisher ist keine geeignete Gassensoranordnung mit einer Zwei- oder Mehrpunkt-Kalibrierung bekannt, die ohne ein vordefiniertes zusätzliches Prüfgas auskommt.So far If no suitable gas sensor arrangement is known with a two- or multi-point calibration, which manages without a predefined additional test gas.
Demgemäß besteht die Aufgabe der Erfindung in der Bereitstellung einer elektrochemischen Gassensoranordnung, welche so gestaltet ist, dass damit mindestens eine Zweipunkt-Kalibrierung durchgeführt werden kann, ohne dass die Gassensoranordnung mit einem zusätzlichen Prüfgas begast werden muss.Accordingly, there is the object of the invention in the provision of an electrochemical gas sensor arrangement, which is designed so that at least a two-point calibration are performed can, without the gas sensor assembly with an additional Test gas must be fumigated.
Die Lösung der Aufgabe erhält man mit den Merkmalen von Anspruch 1.The solution receives the task one with the features of claim 1.
In der angegebenen elektrochemischen Gassensoranordnung sind mindestens zwei Messelektroden über eine Diffusionsbegrenzung mit der Umgebungsluft in Gasströmungsverbindung und stehen zusätzlich über mindestens einen Gasströmungskanal miteinander in Gasströmungsverbindung. Wenn nun eine der Messelektroden abgeschaltet wird, kann das Messgas von dieser Messelektrode durch den Gasströmungskanal zur zweiten und gegebenenfalls zu weiteren Messelektroden gelangen und führt dort zu einer Messsignalerhöhung. Bei wechselseitiger Schaltung können so beide bzw. alle vorhandenen Messelektroden gegeneinander getestet und kalibriert werden. Durch Modulation des Potentials können verschiedene Messgaskonzentrationen simuliert werden. Gleichzeitig erhält man eine redundante Gassensoranordnung, die nach Ausfall einer Messelektrode messbereit bleibt.In the specified electrochemical gas sensor arrangement are at least two measuring electrodes over a diffusion restriction with the ambient air in gas flow communication and are additionally over at least a gas flow channel together in gas flow connection. If now one of the measuring electrodes is switched off, the measuring gas can from this measuring electrode through the gas flow channel to the second and if necessary, get to other measuring electrodes and leads there to a measurement signal increase. at mutual switching can so both or all existing measuring electrodes tested against each other and calibrated. By modulation of the potential different Measuring gas concentrations are simulated. At the same time you get a redundant Gas sensor arrangement, which is ready for measurement after failure of a measuring electrode remains.
Die Unteransprüche geben vorteilhafte Aus- und Weiterbildungen der Gassensoranordnung gemäß Hauptanspruch an.The under claims give advantageous embodiments and further developments of the gas sensor arrangement according to the main claim at.
Im Folgenden werden Ausführungsbeispiele mit Hilfe der Figuren erläutert.in the Below are embodiments with Help the figures explained.
Es zeigenIt demonstrate
Über die
als Kapillarelemente
Alternativ
kann die Diffusionsbegrenzung als poröse oder geschlossene, aber
permeable Diffusionsmembran, speziell aus PTFE, ausgeführt sein. Über den
Gasströmungskanal
Der
Gasströmungskanal
Die
Messelektroden
Über eine
Bohrung
Die
Potentiostateinheit
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510026491 DE102005026491B4 (en) | 2005-06-09 | 2005-06-09 | Electrochemical gas sensor arrangement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510026491 DE102005026491B4 (en) | 2005-06-09 | 2005-06-09 | Electrochemical gas sensor arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102005026491A1 true DE102005026491A1 (en) | 2006-12-21 |
DE102005026491B4 DE102005026491B4 (en) | 2007-05-16 |
Family
ID=37489561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200510026491 Expired - Fee Related DE102005026491B4 (en) | 2005-06-09 | 2005-06-09 | Electrochemical gas sensor arrangement |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005026491B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021111431A1 (en) | 2020-06-29 | 2021-12-30 | Dräger Safety AG & Co. KGaA | Surveillance system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4440726A (en) * | 1983-01-17 | 1984-04-03 | Coulson Dale M | Apparatus for electrochemical detection and coulometric titration |
GB8313846D0 (en) * | 1983-05-19 | 1983-06-22 | City Tech | Gas sensor |
DE4136779A1 (en) * | 1991-11-08 | 1993-05-13 | Bayer Ag | DEVICE FOR SIMULTANEOUS DETECTION OF DIFFERENT GAS COMPONENTS |
DE19533911C1 (en) * | 1995-09-13 | 1996-05-09 | Draegerwerk Ag | Electrochemical measurement cell e.g. carbon mon:oxide and oxygen@ |
US7276146B2 (en) * | 2001-11-16 | 2007-10-02 | Roche Diagnostics Operations, Inc. | Electrodes, methods, apparatuses comprising micro-electrode arrays |
GB0317131D0 (en) * | 2003-07-22 | 2003-08-27 | City Tech | Electrochemical gas sensor |
DE10347796B4 (en) * | 2003-10-14 | 2015-01-08 | Robert Bosch Gmbh | Sensor for determining the concentration of a gas component in a gas mixture |
-
2005
- 2005-06-09 DE DE200510026491 patent/DE102005026491B4/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE102005026491B4 (en) | 2007-05-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102005028246B4 (en) | Gas sensor arrangement with electrochemical gas generator | |
DE2224703C3 (en) | Electrochemical measuring device | |
DE102004059280B4 (en) | Electrochemical gas sensor | |
DE2208281C3 (en) | Polarography probe | |
EP2825879B1 (en) | Functionality monitoring for thermal conductivity gas sensors | |
DE3203362A1 (en) | GAS SENSOR | |
EP0540974A2 (en) | Apparatus for simultaneous determination of different gas components | |
DE102008055084A1 (en) | Ion-selective electrode | |
DE2006682A1 (en) | Polarography probe | |
DE19510574C1 (en) | Condition monitoring system for amperometric electrochemical gas sensor | |
DE19781639B4 (en) | Electrochemical sensor with a non-aqueous electrolyte system | |
DE102017115420A1 (en) | sensor | |
DE19533911C1 (en) | Electrochemical measurement cell e.g. carbon mon:oxide and oxygen@ | |
DE102009001249A1 (en) | Solid electrolyte gas sensor for the measurement of various gas species (I) | |
DE19681487B3 (en) | Electrochemical sensor for detecting nitrogen dioxide | |
EP0016423B1 (en) | Gas detector | |
DE102013007872A1 (en) | Electrochemical gas sensor, process for its production and its use | |
DE102005026491A1 (en) | Electrochemical gas sensor arrangement e.g. for gas sensor, has test electrodes positioned over diffusion part and being in gas flow connection to environment | |
DE2124445A1 (en) | Electrode arrangement | |
DE102012201843A1 (en) | Arrangement and method for the electrical detection of liquid samples with lateral flow assays | |
DE3546409A1 (en) | Method and appliance for the automatic calibration of chemical sensors | |
DE19626277A1 (en) | Appliance for measuring electrochemical potentials | |
DE10326476A1 (en) | Method and sensor for determining a chemical element | |
EP0780685A1 (en) | Amperometric sensor with two electrodes, in particular for hydrogen peroxide | |
DD202213A5 (en) | MEASUREMENT ARRANGEMENT FOR DETERMINING THE IONACTIVITY OF SOLUTIONS OR PARTIAL PRESSURE OF GASES |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
R084 | Declaration of willingness to licence | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |