BE762753A - Measurement of combustible gas and vapour concentration - Google Patents

Measurement of combustible gas and vapour concentration

Info

Publication number
BE762753A
BE762753A BE762753A BE762753A BE762753A BE 762753 A BE762753 A BE 762753A BE 762753 A BE762753 A BE 762753A BE 762753 A BE762753 A BE 762753A BE 762753 A BE762753 A BE 762753A
Authority
BE
Belgium
Prior art keywords
signal
measurement
head
current
temperature
Prior art date
Application number
BE762753A
Other languages
French (fr)
Inventor
A N Scherban
N I Furman
B F Sotnichenko
N S Belogolovin
J I Chopovsky
J N Sutormin
V I Zaitsev
V I Kot
N T Mikhailjuk
S A Denisenko
A V Chaschinov
S V Shaporev
S M Samoilenko
Original Assignee
Inst Tekhn Teplofiziki Akademi
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 Inst Tekhn Teplofiziki Akademi filed Critical Inst Tekhn Teplofiziki Akademi
Priority to BE762753A priority Critical patent/BE762753A/en
Publication of BE762753A publication Critical patent/BE762753A/en

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

Gas is fed to the thermo catalytic head supplied with a self regulating current. Combustible gases burn at the head generating a rise in temperature and consequent current signal difference. The signal is fed via a relay to a mono stable multivibrator which, at a predetermined level generates a warning signal e.g. lumino-acoustic, and additionally reduces the current to the head to reduce the temperature and protect the elements. A secondary relay operating on the input voltage generates a multivibrator signal on detection of diminished voltage. Esp. used for measurement of methane in coal mine atmos., but also suitable for use in chemical and petroleum industries.
BE762753A 1971-02-10 1971-02-10 Measurement of combustible gas and vapour concentration BE762753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE762753A BE762753A (en) 1971-02-10 1971-02-10 Measurement of combustible gas and vapour concentration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE762753A BE762753A (en) 1971-02-10 1971-02-10 Measurement of combustible gas and vapour concentration

Publications (1)

Publication Number Publication Date
BE762753A true BE762753A (en) 1971-07-16

Family

ID=3857702

Family Applications (1)

Application Number Title Priority Date Filing Date
BE762753A BE762753A (en) 1971-02-10 1971-02-10 Measurement of combustible gas and vapour concentration

Country Status (1)

Country Link
BE (1) BE762753A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2374637A2 (en) * 1976-12-15 1978-07-13 Consolidation Coal Co COMBUSTIBLE GAS DETECTION CIRCUIT IN THE ATMOSPHERE OF A MINE
CN109580715A (en) * 2018-11-20 2019-04-05 山西工程技术学院 The design and implementation methods of portable tri-state gas alarm module

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2374637A2 (en) * 1976-12-15 1978-07-13 Consolidation Coal Co COMBUSTIBLE GAS DETECTION CIRCUIT IN THE ATMOSPHERE OF A MINE
CN109580715A (en) * 2018-11-20 2019-04-05 山西工程技术学院 The design and implementation methods of portable tri-state gas alarm module
CN109580715B (en) * 2018-11-20 2024-03-12 山西工程技术学院 Portable tri-state gas alarm

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