JPS5752850A - Gas leakage warning device - Google Patents

Gas leakage warning device

Info

Publication number
JPS5752850A
JPS5752850A JP12776480A JP12776480A JPS5752850A JP S5752850 A JPS5752850 A JP S5752850A JP 12776480 A JP12776480 A JP 12776480A JP 12776480 A JP12776480 A JP 12776480A JP S5752850 A JPS5752850 A JP S5752850A
Authority
JP
Japan
Prior art keywords
signal
gas
gas detecting
reference voltage
detecting element
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.)
Granted
Application number
JP12776480A
Other languages
Japanese (ja)
Other versions
JPS6122258B2 (en
Inventor
Shigeo Akiyama
Toru Nobetani
Shigekazu Kusanagi
Hideo Kawamura
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP12776480A priority Critical patent/JPS5752850A/en
Priority to SE8105260A priority patent/SE8105260L/en
Priority to GB8127112A priority patent/GB2086583B/en
Priority to NL8104198A priority patent/NL8104198A/en
Priority to DE19813136034 priority patent/DE3136034A1/en
Priority to US06/302,161 priority patent/US4490715A/en
Publication of JPS5752850A publication Critical patent/JPS5752850A/en
Publication of JPS6122258B2 publication Critical patent/JPS6122258B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • 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

Landscapes

  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

PURPOSE:To eliminate wrong warning of a gas leakage warning device, by a method wherein a gas detecting element sensitive to water vapor or alcohol gas is additionally installed, and signal of this detecting element and signal of a gas leakage detecting element are compared with each other. CONSTITUTION:A gas detecting element 1a is heated at a high temperature and sensitive to butane or methane gas. A gas detecting element 1b is heated at a low temperature and sensitive to water vapor or alcohol gas. Gas detecting signal Va, Vb is compared with reference voltage Voa, Vob, Voc by gas detecting circuits 3a, 3b, 3c, and when the gas detecting signal becomes greater than the reference voltage, signal a, b, c is outputted. The reference voltage Voa, Vob is set low, and the reference voltage Voc is set high. The low concentration gas detecting signal a, b is entered in a wrong action preventing gate circuit 6, and if there is no signal b, driving signal d of a warning means 10 is outputted. High concentration gas detecting signal c from the gas detecting circuit 3c passes through an OR corcuit 9 and becomes acting signal of the warning means 10.
JP12776480A 1980-09-13 1980-09-13 Gas leakage warning device Granted JPS5752850A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP12776480A JPS5752850A (en) 1980-09-13 1980-09-13 Gas leakage warning device
SE8105260A SE8105260L (en) 1980-09-13 1981-09-04 Gas Detector
GB8127112A GB2086583B (en) 1980-09-13 1981-09-08 Gas detector
NL8104198A NL8104198A (en) 1980-09-13 1981-09-11 GAS DETECTOR.
DE19813136034 DE3136034A1 (en) 1980-09-13 1981-09-11 GAS DETECTOR
US06/302,161 US4490715A (en) 1980-09-13 1981-09-14 Gas detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12776480A JPS5752850A (en) 1980-09-13 1980-09-13 Gas leakage warning device

Publications (2)

Publication Number Publication Date
JPS5752850A true JPS5752850A (en) 1982-03-29
JPS6122258B2 JPS6122258B2 (en) 1986-05-30

Family

ID=14968110

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12776480A Granted JPS5752850A (en) 1980-09-13 1980-09-13 Gas leakage warning device

Country Status (1)

Country Link
JP (1) JPS5752850A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58178666U (en) * 1982-05-25 1983-11-29 新コスモス電機株式会社 Identification type gas detection device
JP2018205105A (en) * 2017-06-05 2018-12-27 Tdk株式会社 Gas sensor and detection method of gas concentration

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58178666U (en) * 1982-05-25 1983-11-29 新コスモス電機株式会社 Identification type gas detection device
JPH0219723Y2 (en) * 1982-05-25 1990-05-30
JP2018205105A (en) * 2017-06-05 2018-12-27 Tdk株式会社 Gas sensor and detection method of gas concentration

Also Published As

Publication number Publication date
JPS6122258B2 (en) 1986-05-30

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