DE2840841A1 - METHOD FOR DETERMINING THE AVERAGE CONCENTRATION OF A GAS OR A GAS COMPONENT IN GAS MIXTURES - Google Patents

METHOD FOR DETERMINING THE AVERAGE CONCENTRATION OF A GAS OR A GAS COMPONENT IN GAS MIXTURES

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Publication number
DE2840841A1
DE2840841A1 DE19782840841 DE2840841A DE2840841A1 DE 2840841 A1 DE2840841 A1 DE 2840841A1 DE 19782840841 DE19782840841 DE 19782840841 DE 2840841 A DE2840841 A DE 2840841A DE 2840841 A1 DE2840841 A1 DE 2840841A1
Authority
DE
Germany
Prior art keywords
gas
paper tape
reagent paper
determining
gassing
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
DE19782840841
Other languages
German (de)
Inventor
Roland Dipl Phys D Neuhaeusser
Manfred Dipl Phys D Schinkmann
Joerg Dipl Ing Winkler
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.)
Draegerwerk AG and Co KGaA
Original Assignee
Draegerwerk AG and Co KGaA
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 Draegerwerk AG and Co KGaA filed Critical Draegerwerk AG and Co KGaA
Priority to DE19782840841 priority Critical patent/DE2840841A1/en
Priority to GB7932177A priority patent/GB2030296B/en
Publication of DE2840841A1 publication Critical patent/DE2840841A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/52—Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper and including single- and multilayer analytical elements
    • G01N33/521—Single-layer analytical elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • G01N31/223—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating presence of specific gases or aerosols

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Urology & Nephrology (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Biotechnology (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Microbiology (AREA)
  • Cell Biology (AREA)
  • Dispersion Chemistry (AREA)
  • Biophysics (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)

Description

2S4Ö8412S4Ö841

Dräqerwerk Aktiengesellschaft Moislinqer Allee 53-55, 2400 LübeckDräqerwerk Aktiengesellschaft Moislinqer Allee 53-55, 2400 Lübeck

Verfahren zur Bestimmung der mittleren Konzentration eines Gases oder eines Gasbestandteils in GasgemischenMethod for determining the mean concentration of a gas or a gas component in gas mixtures

Die Erfindung betrifft ein Verfahren zur Bestimmung der mittleren Konzentration eines Gases oder eines Gasbestandteils in Gasgemischen entsprechend dem Gattungsbegriff des Anspruches 1.The invention relates to a method for determining the mean concentration of a gas or a gas component in gas mixtures according to the generic term of claim 1.

ReagenzpapierbMnder werden wegen ihrer hohen Meßempfindlichkeit zur Messung geringer Konzentrationen von Gasen in Gasgemischen verwendet. Dazu wird ein Abschnitt, eine Wegstrecke, des Reagenzpapierbandes mit dem zu messenden Gas in Berührung gebracht. Infolge der chemischen Reaktion der Reagenzien mit dem zu messenden Gas verfärbt sich dieser Abschnitt des Bandes. Der Helligkeitsunterschied aus der Helligkeit vor und nach der Begasung, die in einem Meßkopf bestimmt wird, ist das Maß für die Konzentration des Gases. Er ist insbesondere eine Aussage über die mittlere Konzentration während der Begasungszeit.Reagent paper tapes are used because of their high measurement sensitivity used to measure low concentrations of gases in gas mixtures. To do this, a section, a Distance of the reagent paper tape brought into contact with the gas to be measured. As a result of the chemical reaction of the reagents with the gas to be measured, this section of the tape changes color. The difference in brightness the brightness before and after the gassing, which is determined in a measuring head, is the measure of the concentration of the gas. In particular, it is a statement about the mean concentration during the gassing time.

030014/0131030014/0131

Ein bekanntes Verfahren und Vorrichtung zur Konzentrationsbestimmung eines Gases oder eines Gasbestandteils in Gasgemischen verfolgt die Verfärbung eines Reagenzpapierbandes bis zum Erreichen eines vorgegebenen Schwellwertes. Dabei wird die Zeitdauer der Verfärbung bis zum Erreichen dieses Schwellwertes mit der Dauer eingestellter Verzögerungszeiten verglichen. Das Reagenzpapierband wird nach Ablauf dieser Zeitdauer weiterbewegt. Für jede Zeitdauer ist damit die mittlere Konzentration des zu bestimmenden Gases während dieser Zeitdauer festgestellt. (DE-OS 24 07 224).A known method and device for determining concentration of a gas or a gas component in gas mixtures follows the discoloration of a reagent paper tape until a specified threshold is reached. The duration of the discoloration until When this threshold value is reached, compared with the duration of the set delay times. The reagent paper tape is moved on after this time has elapsed. For each period of time, the mean concentration of the is therefore determining gas determined during this period. (DE-OS 24 07 224).

Aufgabe der Erfindung ist die Bestimmung der mittleren Konzentration eines Gases mittels des- Reagenzpapierbandes. The object of the invention is to determine the mean concentration of a gas by means of the reagent paper tape.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Anzahl der verfärbten Begasungsfelder während der Gesamtbegasungszeit festgestellt wird.The object is achieved according to the invention in that the number of discolored gassing fields during the total gassing time is detected.

Das Verfahren nach der Erfindung verlangt nicht die aus dem Stand der Technik bekannten und dort notwendigen Einrichtungen für die Feststellung der tatsächlichen Schaltzeiten von Begasungsfeld zu Begasungsfeld und deren Vergleich mit der eingestellten Verzögerungszeit.The method according to the invention does not require the devices known from the prior art and necessary there for the determination of the actual switching times from gas supply field to gas supply field and their comparison with the set delay time.

Mit dieser Lösung ist es in einfacher Weise, z.B. mittels eines Zählers, möglich, die Anzahl der verfärbten Begasungsfelder und mittels eines Uhrwerks möglich, die Gesamtbegasungszeit festzustellen. Aus der Korrelation der beiden Variablen, der Anzahl und der Zeit, ergibt sich die mittlere Konzentration über die Begasungszeit.With this solution, it is possible in a simple manner, e.g. by means of a counter, to determine the number of discolored aeration fields and by means of a clock mechanism possible, the total gassing time ascertain. The correlation of the two variables, the number and the time, results the mean concentration over the gassing time.

03ÖGU/Ü13103ÖGU / Ü131

284084t284084t

-A--A-

In einem geänderten Verfahren entsprechend den Merkmalen des Anspruches 2 wird die Länge des während der Gesamtbegasungszeit beaufschlagten Reagenzpapierbandes festgestellt. Dies ist besonders einfach an einem markierten Reagenzpapierband. Mit dieser Variation des Verfahrens kann der Zähler eingespart werden. Die mittlere Konzentration über die Gesamtbegasungszeit ergibt sich hier aus der Länge und der Zeit.In a modified method according to the features of claim 2, the length of the during the total gassing time applied reagent paper tape detected. This is particularly easy on a marked Reagent paper tape. With this variation of the method, the meter can be saved. The middle concentration The total gassing time is derived from the length and the time.

03Q0U/013103Q0U / 0131

Claims (3)

PatentansprücheClaims f. 1. !Verfahren zur Bestimmung der mittleren Konzentration V^/eines Gases oder eines Gasbestandteils in Gasgemischen mittels der Verfärbung eines Reagenzpapierbandes, wobei die Verfärbung des Begasungsfeldes bis zum Erreichen eines vorgegebenen Schwellwertes festgestellt und dann das Reagenzpapierband jeweils um ein Begasungsfeld weiterbewegt wird, dadurch gekennzeichnet, daß die Anzahl der verfärbten Begasungsfelder während der Gesamtbegasungszeit festgestellt wird. f. 1.! A method for determining the average concentration V ^ / of a gas or a gas component in gas mixtures by means of the discoloration of a reagent paper tape, whereby the discoloration of the aeration field is determined until a predetermined threshold value is reached and the reagent paper tape is then moved on by one aeration field, characterized in that the number of discolored gassing fields is determined during the total gassing time. 2. Verfahren zur Bestimmung der mittleren Konzentration eines Gases oder eines Gasbestandteils in Gasgemischen mittels der Verfärbung eines Reagenzpapierbandes, wobei die Verfärbung des Begasungsfeldes bis zum Erreichen eines vorgegebenen Schwellwertes festgestellt und dann das Reagenzpapierband jeweils um ein Begasungsfeld weiterbewegt wird, dadurch gekennzeichnet, daß die Länge des während der Gesamtbegasungszeit beaufschlagten Reagenzpapierbandes festgestellt wird.2. Method for determining the mean concentration of a gas or a gas component in gas mixtures by means of the discoloration of a reagent paper tape, the discoloration of the aeration field up to determined to reach a predetermined threshold value and then each time the reagent paper tape a gassing field is moved further, characterized in that the length of the during the total gassing time applied reagent paper tape is determined. 3. Reagenzpapierband, dadurch gekennzeichnet, daß es Längenmarkierungen besitzt.3. reagent paper tape, characterized in that it has length markings. 0300U/01310300U / 0131
DE19782840841 1978-09-20 1978-09-20 METHOD FOR DETERMINING THE AVERAGE CONCENTRATION OF A GAS OR A GAS COMPONENT IN GAS MIXTURES Pending DE2840841A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19782840841 DE2840841A1 (en) 1978-09-20 1978-09-20 METHOD FOR DETERMINING THE AVERAGE CONCENTRATION OF A GAS OR A GAS COMPONENT IN GAS MIXTURES
GB7932177A GB2030296B (en) 1978-09-20 1979-09-17 Method of determining the content of a gaseous and/or vapour component in a gas and/or vapour mixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782840841 DE2840841A1 (en) 1978-09-20 1978-09-20 METHOD FOR DETERMINING THE AVERAGE CONCENTRATION OF A GAS OR A GAS COMPONENT IN GAS MIXTURES

Publications (1)

Publication Number Publication Date
DE2840841A1 true DE2840841A1 (en) 1980-04-03

Family

ID=6049906

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782840841 Pending DE2840841A1 (en) 1978-09-20 1978-09-20 METHOD FOR DETERMINING THE AVERAGE CONCENTRATION OF A GAS OR A GAS COMPONENT IN GAS MIXTURES

Country Status (2)

Country Link
DE (1) DE2840841A1 (en)
GB (1) GB2030296B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4806491A (en) * 1985-12-07 1989-02-21 Dragerwerk Aktiengesellschaft Method and apparatus for measuring the reaction of an indicator to the presence of various gases

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5073484A (en) * 1982-03-09 1991-12-17 Bio-Metric Systems, Inc. Quantitative analysis apparatus and method
EP0092246B1 (en) * 1982-04-20 1988-06-15 Union Carbide Corporation Method and apparatus for determining concentration of gas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4806491A (en) * 1985-12-07 1989-02-21 Dragerwerk Aktiengesellschaft Method and apparatus for measuring the reaction of an indicator to the presence of various gases
US4935206A (en) * 1985-12-07 1990-06-19 Dragerwerk Ag Method and apparatus for measuring the reaction of an indicator to the presence of various gases

Also Published As

Publication number Publication date
GB2030296A (en) 1980-04-02
GB2030296B (en) 1982-12-01

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