GB1125053A - Portable measuring apparatus for determining the oxygen content of a gas - Google Patents

Portable measuring apparatus for determining the oxygen content of a gas

Info

Publication number
GB1125053A
GB1125053A GB781067A GB781067A GB1125053A GB 1125053 A GB1125053 A GB 1125053A GB 781067 A GB781067 A GB 781067A GB 781067 A GB781067 A GB 781067A GB 1125053 A GB1125053 A GB 1125053A
Authority
GB
United Kingdom
Prior art keywords
gas
oxygen content
resistors
shaped
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
GB781067A
Inventor
Karl Friedrich Luft
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband GmbH
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 Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Priority to GB781067A priority Critical patent/GB1125053A/en
Priority to FR98469A priority patent/FR92267E/en
Publication of GB1125053A publication Critical patent/GB1125053A/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
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/74—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables of fluids

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 Magnetic Means (AREA)

Abstract

1,125,053. Measuring oxygen content of gases. BERGWERKSVERBAND G.m.b.H. Feb. 17, 1967, No. 7810/67. Addition to 1, 040, 707. Heading G1N Portable apparatus for determining the oxygen content of a gas of the type described in Specification 1, 040, 707 using the paramagnetism of oxygen, comprises a generally U-shaped flow path 5 through which gas flows as a result of a differential pressure arising when the oxygen content of the gas being tested differs from that of a comparison gas, and two centre-tapped resistors 6, 8 are disposed one in each of the parallel arms of the U-shaped path, the resistors being substantially identical and connected in a bridge circuit to compensate for the influence of lift and acceleration. Resistor 8 should be sufficiently spaced from resistor 6 for the gas to cool while flowing between the resistors. To remove errors arising from inaccuracies in the resistors 6, 8, by-pass channels (7a, 7b) having adjustable choke screws (12a, 12b) may be provided, Fig. 2 (not shown). An embodiment having two U-shaped paths connected in series and four flow sensitive resistances in all is described with reference to Fig. 3 (not shown), the resistances being connected in two bridge circuits whose outputs are summed. The features of Figs. 2 and 3 may be combined. Before reaching the ends of the U-shaped path, the comparison gas flows through capillaries 13a, 13b.
GB781067A 1967-02-17 1967-02-17 Portable measuring apparatus for determining the oxygen content of a gas Expired GB1125053A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB781067A GB1125053A (en) 1967-02-17 1967-02-17 Portable measuring apparatus for determining the oxygen content of a gas
FR98469A FR92267E (en) 1967-02-17 1967-03-13 Portable measuring device for the determination of the oxygen content of a gas, in particular for mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB781067A GB1125053A (en) 1967-02-17 1967-02-17 Portable measuring apparatus for determining the oxygen content of a gas

Publications (1)

Publication Number Publication Date
GB1125053A true GB1125053A (en) 1968-08-28

Family

ID=9840180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB781067A Expired GB1125053A (en) 1967-02-17 1967-02-17 Portable measuring apparatus for determining the oxygen content of a gas

Country Status (1)

Country Link
GB (1) GB1125053A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2312036A1 (en) * 1975-05-23 1976-12-17 Siemens Ag Determination of oxygen percentage in gas - from differential pressure magnetic analysis with gas flow compensation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2312036A1 (en) * 1975-05-23 1976-12-17 Siemens Ag Determination of oxygen percentage in gas - from differential pressure magnetic analysis with gas flow compensation

Similar Documents

Publication Publication Date Title
US2728219A (en) Means for measuring the density of a fluid
US3613454A (en) Platinum resistance thermometer circuit
US2633737A (en) Gas analyzer for plural mixtures
KR840004576A (en) Gas classification ratio measurement and control device
GB1577977A (en) Linearized bridge circuit
US3251225A (en) Apparatus for measuring the velocity of a flowing gas
US4011746A (en) Liquid density measurement system
JPS56143915A (en) Measuring device for gas flow rate
US2659862A (en) Apparatus for electrical measurement of thickness using current ratios
GB1125053A (en) Portable measuring apparatus for determining the oxygen content of a gas
JPS61149845A (en) Measuring device for fluid pressure characteristic of gas
US3148339A (en) Negative feedback amplifier for bridge-type transducers
DK105674C (en) Apparatus for measuring the content of small amounts of gaseous, liquid or solids in a gaseous flowing medium.
US3562521A (en) Instrument for measurement of partial pressure of components in a fluid mixture
US2517628A (en) Temperature responsive device
KR850000359B1 (en) In-phase voltage elimination circuit for hall element
US3486364A (en) Oxygen determination
US3408854A (en) Gas chromatography sensing means
US3354696A (en) Pneumatic detector of chromato-graphic fractions
JPS6427275A (en) Semiconductor pressure measuring apparatus
GB1130416A (en) Portable measuring apparatus for determining the oxygen content of a gas
US2677102A (en) Transfer conductance test set
FR1451423A (en) Improvements in mass flow measurement devices
GB835551A (en) Improvements in and relating to temperature measuring devices
GB944474A (en) Apparatus for gas chromatography