DE420436C - Device for displaying gas additions - Google Patents

Device for displaying gas additions

Info

Publication number
DE420436C
DE420436C DES63089D DES0063089D DE420436C DE 420436 C DE420436 C DE 420436C DE S63089 D DES63089 D DE S63089D DE S0063089 D DES0063089 D DE S0063089D DE 420436 C DE420436 C DE 420436C
Authority
DE
Germany
Prior art keywords
wires
mixture
displaying gas
displaying
measuring chamber
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
Application number
DES63089D
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
Publication date
Priority to DES63089D priority Critical patent/DE420436C/en
Application granted granted Critical
Publication of DE420436C publication Critical patent/DE420436C/en
Expired legal-status Critical Current

Links

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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
    • G01N27/18—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested
    • G01N27/185—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested using a catharometer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Description

- Vorrichtung zum Anzeigen von Gasbeimengungen. Es sind Vorrichtungen zum Anzeigen von Gasbeimengungen bekannt, bei welchen der Einfluß der Gasbeimengungen auf die Wärmeleitfähigkeit des Gemisches bestimmt wird. Dazu wird das Gemisch an elektrisch geheizten Drähten vorübergeführt und die Abkühlung der Drähte durch Messung ihres elektrischen Widerstandes bestimmt. Zur Widerstandsmessung wird eine Wheatstonesche Brückenschaltung benutzt, und zwar liegen zwei in der Brückenanordnung einander gegenüberliegende Drähte im Strom des Gasgemisches, während die beiden anderen Drähte von einem Vergleichsgase. umgeben sind.- Device for displaying gas additions. They are devices for displaying gas admixtures known, in which the influence of the gas admixtures on the thermal conductivity of the mixture is determined. To do this, the mixture is turned on electrically heated wires passed and the cooling of the wires by measurement their electrical resistance is determined. A Wheatstone ash is used to measure resistance Bridge circuit used, namely two are in the bridge arrangement each other opposite wires in the flow of the gas mixture, while the other two wires of a comparison gases. are surrounded.

,Gemäß der vorliegenden Erfindung werden die beiden vom Gasgemisch umströmten Drähte in der einen Meßkammer, die. beiden vom Vergleichsgase umgebenen Drähte in einer zweiten Meßkammer eines gemeinsamen Metallblockes angeordnet. Diese Anordnung ermöglicht die Verwendung eines einzigen äußerst einfachen Metallblockes zur Unterbringung der ganzen Wheatstoneschen Brücke. Der für die Meßgenauigkeit erforderliche Temperaturausgleich wird so in einfacher und wirksamer greise herbeigeführt.According to the present invention, the two are separated from the gas mixture flowed around wires in one measuring chamber, the. both surrounded by the reference gases Wires arranged in a second measuring chamber of a common metal block. These Arrangement enables the use of a single extremely simple block of metal to accommodate the whole Wheatstone Bridge. The one for the measurement accuracy the necessary temperature compensation is brought about in a simple and effective way.

Ein Ausführungsbeispiel ist in Abb. i im Längsschnitt, in Abb. 2 in Vorderansicht dargestellt. Der Metallklotz i hat zwei Bohrungen, in deren einer die beiden Meßdrähte 2 und 4, in deren anderer die Meßdrähte 3 und 5 liegen. Die Drähte 2 und 4 sind voreinem ruhenden, in der Kammer eingeschlossenen Vergleichsgase umgeben, an den Drähten 3 und 5 strömt das zu bestimmende Gasgemisch entlang. Zu diesem Zweck ist in dem Metallblock i ein. Kanal 6 vorgesehen, durch den das Gemisch hindurchgeleitet wird. Ein Teil des in ihn eingeführten Gemisches tritt bei 7 in die Meßkammer ein und bei g wieder aus. Die Stromquelle 9 liefert den Meßstrom, dessen Größe am Instrument i i. abgelesen werden kann. Um am Galvanometer io die Zusammensetzung des Gemisches, also beispielsweise den Kohlensäuregehalt, stets richtig ablesen zu können, muß der iüeßstrom mit Hilfe des Widerstandes i2 auf einen bestinunten Wert eingestellt werden.One embodiment is shown in Fig. I in longitudinal section, in Fig. 2 in Front view shown. The metal block i has two holes, in one of which the two measuring wires 2 and 4, in the other of which the measuring wires 3 and 5 are located. the Wires 2 and 4 are in front of a dormant reference gases trapped in the chamber The gas mixture to be determined flows along the wires 3 and 5. to for this purpose i is in the metal block. Channel 6 is provided through which the mixture is passed through. Part of the mixture introduced into it occurs at 7 in the measuring chamber on and off again at g. The current source 9 supplies the measuring current, its size on the instrument i i. can be read. To use the galvanometer io Composition of the mixture, for example the carbon dioxide content, always To be able to read off correctly, the measuring current must be reduced to a specified value can be set.

Claims (1)

PATENT-ANsPRÜCH Vorrichtung zum Anzeigen von Gasbeimengungen, dadurch gekennzeichnet, daß die beiden im Strom des Gemisches liegenden Drähte (3, 5) einer Brückenschaltung in einer Meßkammer, die beiden anderen vom Vergleichsgas umgebenen Drähte (2, 4) der Brückenschaltung in einer zweiten Meßkammer eines gemeinsamen bfetallblockes (i) einander gegenüberliegen, um einen für die Meßgenauigkeit erforderlichen Temperaturausgleich zu ermöglichen. PATENT CLAIMS Device for displaying gas admixtures, characterized in that the two wires (3, 5) of a bridge circuit in the flow of the mixture are in a measuring chamber, the other two wires (2, 4) of the bridge circuit surrounded by the reference gas in a second measuring chamber of a common metal block (i) are opposite to each other in order to enable the temperature compensation required for the measurement accuracy.
DES63089D Device for displaying gas additions Expired DE420436C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES63089D DE420436C (en) Device for displaying gas additions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES63089D DE420436C (en) Device for displaying gas additions

Publications (1)

Publication Number Publication Date
DE420436C true DE420436C (en) 1925-10-29

Family

ID=7496119

Family Applications (1)

Application Number Title Priority Date Filing Date
DES63089D Expired DE420436C (en) Device for displaying gas additions

Country Status (1)

Country Link
DE (1) DE420436C (en)

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