JPS56643A - Gas analyzing unit - Google Patents

Gas analyzing unit

Info

Publication number
JPS56643A
JPS56643A JP7472079A JP7472079A JPS56643A JP S56643 A JPS56643 A JP S56643A JP 7472079 A JP7472079 A JP 7472079A JP 7472079 A JP7472079 A JP 7472079A JP S56643 A JPS56643 A JP S56643A
Authority
JP
Japan
Prior art keywords
gas
dehumidifier
inspected
purge
analyzer
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
JP7472079A
Other languages
Japanese (ja)
Other versions
JPS6038655B2 (en
Inventor
Teruo Kaneko
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP54074720A priority Critical patent/JPS6038655B2/en
Publication of JPS56643A publication Critical patent/JPS56643A/en
Publication of JPS6038655B2 publication Critical patent/JPS6038655B2/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
    • 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
    • G01N33/0026—General constructional details of gas analysers, e.g. portable test equipment using an alternating circulation of another gas

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To improve a measurement precision by using gas, which is dehumidified by one dehumidifier, as dried gas for purge of the other dehumidifier, in the gas analyzing unit provided with a set of semipermeable membranes. CONSTITUTION:Switching valves 14 and 18 which operate synchronously and air opening tube 17 are provided in the flow path of semipermeable membranes 12 and 12a and infrared-ray gas analyzer 15. In this unit, gas to be inspected is sent to analyzer 15 through dehumidifier 12, pump 13 and valve 14; and after a value obtained by measuring this gas is stored, this gas is supplied through air opening tube 17 and switching valve 18 as gas for purge of the other dehumidifier 12a, and meanwhile, reference gas caused to pass through dehumidifier 12a is supplied through pump 13a and valves 14 and 18 as gas for purge of dehumidifier 12. Next, valves 14 and 18 are switched to exchange flow paths of inspected gas and reference gas, and a value obtained by measuring reference gas passing through analyzer 15 is subtracted from the measured value above of inspected gas, thus obtaining the concentration of inspected gas components.
JP54074720A 1979-06-15 1979-06-15 gas analyzer Expired JPS6038655B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54074720A JPS6038655B2 (en) 1979-06-15 1979-06-15 gas analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54074720A JPS6038655B2 (en) 1979-06-15 1979-06-15 gas analyzer

Publications (2)

Publication Number Publication Date
JPS56643A true JPS56643A (en) 1981-01-07
JPS6038655B2 JPS6038655B2 (en) 1985-09-02

Family

ID=13555331

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54074720A Expired JPS6038655B2 (en) 1979-06-15 1979-06-15 gas analyzer

Country Status (1)

Country Link
JP (1) JPS6038655B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0414446A2 (en) * 1989-08-19 1991-02-27 Engine Test Technique Limited Gas analysis
JPH0418352U (en) * 1990-06-01 1992-02-17

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0414446A2 (en) * 1989-08-19 1991-02-27 Engine Test Technique Limited Gas analysis
EP0414446A3 (en) * 1989-08-19 1991-09-25 Engine Test Technique Limited Gas analysis
JPH0418352U (en) * 1990-06-01 1992-02-17

Also Published As

Publication number Publication date
JPS6038655B2 (en) 1985-09-02

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