GB1450776A - Flammable gas detector - Google Patents

Flammable gas detector

Info

Publication number
GB1450776A
GB1450776A GB1345573A GB1345573A GB1450776A GB 1450776 A GB1450776 A GB 1450776A GB 1345573 A GB1345573 A GB 1345573A GB 1345573 A GB1345573 A GB 1345573A GB 1450776 A GB1450776 A GB 1450776A
Authority
GB
United Kingdom
Prior art keywords
bridge
flammable gas
march
measure
ambient atmosphere
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
GB1345573A
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.)
Electrical Remote Control Co Ltd
Original Assignee
Electrical Remote Control Co 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 Electrical Remote Control Co Ltd filed Critical Electrical Remote Control Co Ltd
Priority to GB1345573A priority Critical patent/GB1450776A/en
Publication of GB1450776A publication Critical patent/GB1450776A/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
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/404—Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid, e.g. Clark-type oxygen sensors
    • G01N27/4045—Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid, e.g. Clark-type oxygen sensors for gases other than oxygen
    • 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
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
    • G01N33/0032—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array using two or more different physical functioning modes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Molecular Biology (AREA)
  • Electrochemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

1450776 Determining gas concentrations electrically ELECTRICAL REMOTE CONTROL CO Ltd 19 March 1974 [20 March 1973] 13455/73 Heading G1N The concentration of a flammable gas e.g. methane is measured in a Wheatstone bridge network comprising a catalytic resistor heated by the burning of the test gas as one arm, a reference resistor as the adjacent arm and two fixed resistors in the other branch, the bridge being fed by a zincair cell. The current fed to the bridge is thus a measure of the oxygen content in the ambient atmosphere, and the imbalance current of the bridge is a measure of the methane content in the ambient atmosphere.
GB1345573A 1973-03-20 1973-03-20 Flammable gas detector Expired GB1450776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1345573A GB1450776A (en) 1973-03-20 1973-03-20 Flammable gas detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1345573A GB1450776A (en) 1973-03-20 1973-03-20 Flammable gas detector

Publications (1)

Publication Number Publication Date
GB1450776A true GB1450776A (en) 1976-09-29

Family

ID=10023291

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1345573A Expired GB1450776A (en) 1973-03-20 1973-03-20 Flammable gas detector

Country Status (1)

Country Link
GB (1) GB1450776A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2370281A1 (en) * 1976-11-08 1978-06-02 Thermo Lab Instr METHOD AND APPARATUS FOR MEASURING OXYGEN OR SURPLUS FUELS IN A GAS SAMPLE
US4485666A (en) * 1981-09-11 1984-12-04 Coal Industry (Patents) Limited Gas analyzer
US10352892B2 (en) * 2016-08-26 2019-07-16 Teledyne Instruments, Inc. Electrode for trace oxygen sensor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2370281A1 (en) * 1976-11-08 1978-06-02 Thermo Lab Instr METHOD AND APPARATUS FOR MEASURING OXYGEN OR SURPLUS FUELS IN A GAS SAMPLE
US4485666A (en) * 1981-09-11 1984-12-04 Coal Industry (Patents) Limited Gas analyzer
US10352892B2 (en) * 2016-08-26 2019-07-16 Teledyne Instruments, Inc. Electrode for trace oxygen sensor

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee