GB466391A - Improvements in electrical devices for detecting a gas in a gaseous mixture and for determining the amount thereof - Google Patents

Improvements in electrical devices for detecting a gas in a gaseous mixture and for determining the amount thereof

Info

Publication number
GB466391A
GB466391A GB23692/36A GB2369236A GB466391A GB 466391 A GB466391 A GB 466391A GB 23692/36 A GB23692/36 A GB 23692/36A GB 2369236 A GB2369236 A GB 2369236A GB 466391 A GB466391 A GB 466391A
Authority
GB
United Kingdom
Prior art keywords
gas
conductor
constituents
cell
determining
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
GB23692/36A
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.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
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 Hokushin Electric Works Ltd filed Critical Hokushin Electric Works Ltd
Publication of GB466391A publication Critical patent/GB466391A/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
    • G01N27/16—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

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)

Abstract

<PICT:0466391/III/1> Apparatus for determining two different constituents of a gas mixture comprises two electric conductors 4, 5 surrounded by different catalysts acting selectively on the respective constituents to produce exothermic reactions, the conductors being arranged in a Wheatstone bridge for comparison of their resistances. The catalysts are applied to porous tube surrounding the conductors according to the parent Specification. The gas under test is first passed through cell 6 surrounding conductor 4 in order to determine the constituents reacting to the catalyst in that cell, while conductor 6 acts as a standard of comparison. Three-way cock 10 is then operated to divert the gas through cell 7 for determination of constituents reacting to the catalyst surrounding conductor 6, while conductor 4 serves as the standard. The galvanometer 2 is connected across the bridge through a change-over switch 19.
GB23692/36A 1935-09-03 1936-08-29 Improvements in electrical devices for detecting a gas in a gaseous mixture and for determining the amount thereof Expired GB466391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP466390X 1935-09-03

Publications (1)

Publication Number Publication Date
GB466391A true GB466391A (en) 1937-05-27

Family

ID=12752858

Family Applications (2)

Application Number Title Priority Date Filing Date
GB23692/36A Expired GB466391A (en) 1935-09-03 1936-08-29 Improvements in electrical devices for detecting a gas in a gaseous mixture and for determining the amount thereof
GB23691/36A Expired GB466390A (en) 1935-09-03 1936-08-29 Improvements in electrical devices for detecting a gas in a gaseous mixture and for determining the amount thereof

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB23691/36A Expired GB466390A (en) 1935-09-03 1936-08-29 Improvements in electrical devices for detecting a gas in a gaseous mixture and for determining the amount thereof

Country Status (2)

Country Link
FR (1) FR812138A (en)
GB (2) GB466391A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514106A (en) * 1948-10-25 1950-07-04 Fruit Growers Express Company Temperature measuring apparatus
US2684592A (en) * 1949-04-11 1954-07-27 American Instr Co Inc Automatic temperature-compensated humidity indicator
US2743167A (en) * 1950-10-10 1956-04-24 Robert H Cherry Instrument for measuring carbon monoxide in oxygen bearing atmosphere
US2768069A (en) * 1952-06-05 1956-10-23 Factory Mutual Res Corp Combustible gas detector
US2866330A (en) * 1952-07-10 1958-12-30 Hartmann & Braun Ag Instrument for gas analysis with heated wire system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741297C (en) * 1938-11-03 1943-11-09 Aeg Device for determining the content of combustible gases in gas mixtures
GB1013682A (en) * 1960-12-15 1965-12-15 English Electric Co Ltd Improvements in and relating to gas detecting apparatus
DE1280587B (en) * 1965-11-02 1968-10-17 Rau Swf Autozubehoer Exhaust gas testing device for motor vehicles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514106A (en) * 1948-10-25 1950-07-04 Fruit Growers Express Company Temperature measuring apparatus
US2684592A (en) * 1949-04-11 1954-07-27 American Instr Co Inc Automatic temperature-compensated humidity indicator
US2743167A (en) * 1950-10-10 1956-04-24 Robert H Cherry Instrument for measuring carbon monoxide in oxygen bearing atmosphere
US2768069A (en) * 1952-06-05 1956-10-23 Factory Mutual Res Corp Combustible gas detector
US2866330A (en) * 1952-07-10 1958-12-30 Hartmann & Braun Ag Instrument for gas analysis with heated wire system

Also Published As

Publication number Publication date
FR812138A (en) 1937-04-30
GB466390A (en) 1937-05-27

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