GB1064871A - Process and apparatus for determining the oxygen content of a gas - Google Patents

Process and apparatus for determining the oxygen content of a gas

Info

Publication number
GB1064871A
GB1064871A GB27422/64A GB2742264A GB1064871A GB 1064871 A GB1064871 A GB 1064871A GB 27422/64 A GB27422/64 A GB 27422/64A GB 2742264 A GB2742264 A GB 2742264A GB 1064871 A GB1064871 A GB 1064871A
Authority
GB
United Kingdom
Prior art keywords
resistor
bridge
oxygen
gas
methane
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
GB27422/64A
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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
Priority claimed from DE1963ST016145 external-priority patent/DE1889612U/en
Application filed by Stamicarbon BV filed Critical Stamicarbon BV
Publication of GB1064871A publication Critical patent/GB1064871A/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
    • 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
    • G01N27/16—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 burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/20—Oxygen containing
    • Y10T436/207497—Molecular oxygen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
    • Y10T436/25875—Gaseous sample or with change of physical state

Abstract

1,064,871. Gas analysis. STAMICARBON N.V. July 2, 1964 [July 2, 1963; Dec. 6, 1963], No.27422/64. Heading G1N. Apparatus for determining the oxygen content of a gas mixture comprises means for measuring the temperature rise when the gas is mixed with an excess of oxidizable material in the presence of a catalyst resistor connected in a bridge circuit. The oxidizable material may be pentane, butane or hexane, forming C0 2 and H 2 0 on oxidation. The apparatus may be combined with means to measure methane concentration. The oxygen gas mixture to be analyzed is drawn by a pump 14 (Fig. 2) through a mixing chamber 13 containing brick grit in which cyclohexane has been absorbed, and a reaction chamber 5 where the gases combine in the presence of a catalytically active resistor 4, the change in resistance, indicative of the rise in temperature and oxygen concentration, being measured in a D. C. bridge circuit containing a heating resistor 2, fixed resistor 3 and resistor network 6, 7, 8, resistor 8 having a negative temperature coefficient for compensating for ambient temperature, and resistor 7 being adjustable manually or automatically with a Bourdon gauge, for ambient air pressure. A switch 10 enables the bridge meter 9 to be used for checking the bridge battery 1. Details of the construction of the mixing chamber and reaction chamber are given. In another embodiment Fig. 8 (not shown) the reaction chamber can be coupled to one of two inlet ports, each associated with different bridge resistors giving full scale deflection on the bridge unbalance meter for preselected concentrations of oxygen or methane. For large concentrations of methane, the test gas is fed through a third inlet port in parallel with an oxygen source fed through a tube having an impedance <SP>1</SP>/ 19 the impedance of the test gas tube, whereby a methane concentration of 80% is indicated as <SP>80</SP> 20 i. e. 4%. An alarm device can be energized at predetermined maximum or minimum concentrations.
GB27422/64A 1963-07-02 1964-07-02 Process and apparatus for determining the oxygen content of a gas Expired GB1064871A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1963ST016145 DE1889612U (en) 1963-07-02 1963-07-02 GAS ANALYSIS DEVICE.
NL301469 1963-12-06

Publications (1)

Publication Number Publication Date
GB1064871A true GB1064871A (en) 1967-04-12

Family

ID=25993948

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27422/64A Expired GB1064871A (en) 1963-07-02 1964-07-02 Process and apparatus for determining the oxygen content of a gas

Country Status (6)

Country Link
US (1) US3415626A (en)
BE (1) BE650043A (en)
CH (1) CH467451A (en)
DE (1) DE1523033A1 (en)
GB (1) GB1064871A (en)
NL (1) NL302576A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130066564A1 (en) * 2011-09-13 2013-03-14 David E. Forsyth System and method for dynamically measuring oxygen levels

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2367285A1 (en) * 1976-10-08 1978-05-05 Charbonnages De France METHOD AND APPARATUS FOR MEASURING THE OXYGEN CONTENT OF A GAS LANGE, SUCH AS AN ATMOSPHERE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2404993A (en) * 1940-01-22 1946-07-30 Cities Service Oil Co Gas analyzer
US2420430A (en) * 1943-05-26 1947-05-13 Bailey Meter Co Gas analyzer
US2470714A (en) * 1945-02-09 1949-05-17 Searle G Nevius Electric pressure indicator
US2916358A (en) * 1952-07-31 1959-12-08 Coal Industry Patents Ltd Apparatus for detecting carbon monoxide
US2955922A (en) * 1957-07-22 1960-10-11 White Eagle International Inc Gas detection apparatus
US3297943A (en) * 1962-08-22 1967-01-10 Exxon Research Engineering Co Electrometric system with automatic temperature compensating means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130066564A1 (en) * 2011-09-13 2013-03-14 David E. Forsyth System and method for dynamically measuring oxygen levels
US8942944B2 (en) * 2011-09-13 2015-01-27 Laguna Research, Inc. System and method for dynamically measuring oxygen levels

Also Published As

Publication number Publication date
DE1523033A1 (en) 1969-05-22
CH467451A (en) 1969-01-15
BE650043A (en) 1965-01-04
US3415626A (en) 1968-12-10
NL302576A (en)

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