IT1243738B - Analizzatore di gas con filtro a diffusione. - Google Patents

Analizzatore di gas con filtro a diffusione.

Info

Publication number
IT1243738B
IT1243738B IT02172190A IT2172190A IT1243738B IT 1243738 B IT1243738 B IT 1243738B IT 02172190 A IT02172190 A IT 02172190A IT 2172190 A IT2172190 A IT 2172190A IT 1243738 B IT1243738 B IT 1243738B
Authority
IT
Italy
Prior art keywords
gas analyzer
diffusion filter
diffusion
filter
analyzer
Prior art date
Application number
IT02172190A
Other languages
English (en)
Other versions
IT9021721A1 (it
IT9021721A0 (it
Inventor
Stephen E Long
Albert A Poli
Original Assignee
Mine Safety Appliances Co
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 Mine Safety Appliances Co filed Critical Mine Safety Appliances Co
Publication of IT9021721A0 publication Critical patent/IT9021721A0/it
Publication of IT9021721A1 publication Critical patent/IT9021721A1/it
Application granted granted Critical
Publication of IT1243738B publication Critical patent/IT1243738B/it

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
    • G01N33/0011—Sample conditioning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2247—Sampling from a flowing stream of gas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2247—Sampling from a flowing stream of gas
    • G01N2001/227—Sampling from a flowing stream of gas separating gas from solid, e.g. filter

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
IT02172190A 1989-11-02 1990-10-12 Analizzatore di gas con filtro a diffusione. IT1243738B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/430,377 US5054328A (en) 1989-11-02 1989-11-02 Gas analyzer with diffusion filter

Publications (3)

Publication Number Publication Date
IT9021721A0 IT9021721A0 (it) 1990-10-12
IT9021721A1 IT9021721A1 (it) 1992-04-12
IT1243738B true IT1243738B (it) 1994-06-21

Family

ID=23707303

Family Applications (1)

Application Number Title Priority Date Filing Date
IT02172190A IT1243738B (it) 1989-11-02 1990-10-12 Analizzatore di gas con filtro a diffusione.

Country Status (4)

Country Link
US (1) US5054328A (it)
DE (1) DE4034446A1 (it)
GB (1) GB2237518B (it)
IT (1) IT1243738B (it)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5317930A (en) * 1991-09-18 1994-06-07 Wedding & Associates, Inc. Constant flowrate controller for an aerosol sampler using a filter
DE4133300C2 (de) * 1991-10-08 1996-07-11 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Bestimmen strippbarer Substanzen aus Flüssigkeiten
GB9224677D0 (en) * 1992-11-25 1993-01-13 Edinburgh Sensors Ltd Gas sensor
US5395429A (en) * 1993-06-23 1995-03-07 W. L. Gore & Associates, Inc. Diffusion panel for use in ultra-clean environments and method for employing same
DE4326857A1 (de) * 1993-08-06 1995-02-09 Siemens Ag Vorrichtung zum Erfassen eines Gaslecks
DE4424909A1 (de) * 1994-07-14 1996-01-18 Siemens Ag Verfahren und Vorrichtung zur Ortung von Schadstoffansammlungen
DE19509146C1 (de) * 1995-03-14 1996-08-29 Draegerwerk Ag Vorrichtung zum selektiven Nachweis einer Komponente in einem Gasgemisch
DE19533510C2 (de) * 1995-08-30 1997-07-24 Dirk Dr Thamm Vorrichtung zur Entnahme und Bestimmung gelöster Komponenten in Flüssigkeiten oder Gasen
DE29623438U1 (de) 1996-05-06 1998-06-04 Trace Analysensysteme Gmbh Transportable Meßvorrichtung zum Nachweis von durch die Haut abgegebenen oder ausgedunsteten Substanzen
DE19617964C2 (de) * 1996-05-06 1998-07-09 Trace Analysensysteme Gmbh Verfahren und Meßvorrichtung zum Nachweis von durch die Haut abgegebenen oder ausgedunsteten Substanzen und zugehörige Meßvorrichtung
US5979219A (en) * 1997-02-03 1999-11-09 Sylvia Sellmer Wilsberg Probe for measuring volatile components in an aqueous solution
US6523393B1 (en) * 1999-06-23 2003-02-25 Sandia Corporation Human portable preconcentrator system
US6604406B1 (en) * 1999-06-23 2003-08-12 Sandia Corporation Human portable preconcentrator system
DE10019853A1 (de) * 2000-04-13 2001-10-25 Auergesellschaft Gmbh Gassensoranordnung
US6526805B1 (en) * 2000-08-11 2003-03-04 General Electric Co. Apparatus for continuously determining volatile substances dissolved in insulating fluid
SE518005C2 (sv) * 2001-03-26 2002-08-13 Tigerholm Innovation Ab Anordning och förfarande för indikering av gas/luft i ett vätskesystem
DE60104551T2 (de) * 2001-10-08 2004-12-23 Instrumentarium Corp. Wasserabscheider für ein Gasanalysegerät
SE0201073D0 (sv) * 2002-04-09 2002-04-09 Siemens Elema Ab Acoustic Gas Monitor
JP3743718B2 (ja) * 2002-11-14 2006-02-08 愛三工業株式会社 ガス検知器
US7028562B2 (en) * 2003-02-06 2006-04-18 University Of Maryland, Baltimore County Vacuum membrane extraction system
US7111503B2 (en) * 2004-01-22 2006-09-26 Datalog Technology Inc. Sheet-form membrane sample probe, method and apparatus for fluid concentration analysis
US20090178467A1 (en) * 2006-06-21 2009-07-16 Hongtan Liu Multi-purpose concentration sensors and test methods
US7552620B2 (en) * 2006-09-07 2009-06-30 3M Innovative Properties Company Fluid permeation testing method employing mass spectrometry
US7555934B2 (en) * 2006-09-07 2009-07-07 3M Innovative Properties Company Fluid permeation testing apparatus employing mass spectrometry
KR101021135B1 (ko) 2009-06-08 2011-03-14 고려대학교 산학협력단 실제운전 조건 하에서 고분자 전해질 연료전지 기체확산층의 기체투과도 측정장치 및 이의 측정방법

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955943A (en) * 1948-06-16 1976-05-11 The United States Of America As Represented By The United States Energy Research And Development Administration Diffusion method of seperating gaseous mixtures
US3131143A (en) * 1959-11-17 1964-04-28 Technicon Instr Ultra-filtration apparatus and method
US3367850A (en) * 1964-12-07 1968-02-06 Exxon Research Engineering Co Method and apparatus for determining moisture content of hydrocarbon fluids
US3431771A (en) * 1965-03-11 1969-03-11 Exxon Research Engineering Co Universal diffusion-sorption type gas analyzer
DE1598068C3 (de) * 1965-08-17 1978-11-09 Fried. Krupp Gmbh, 4300 Essen Vorrichtung zur selbsttätigen fortlaufenden Probenahme von Abgasen
US3552211A (en) * 1968-10-09 1971-01-05 Phillips Petroleum Co Mixed phase sampling system
US3674153A (en) * 1970-09-25 1972-07-04 Beckman Instruments Inc Bypass filter assembly and method of obtaining a filtered sample
US3718434A (en) * 1972-01-13 1973-02-27 R Pierce Apparatus and method for detecting gaseous contaminants
SE377995B (it) * 1973-08-21 1975-08-11 Alfa Laval Ab
GB1454602A (en) * 1974-05-02 1976-11-03 Jenkins A Apparatus for checking the contents of closed containers
US3926561A (en) * 1974-05-13 1975-12-16 Meloy Lab Gas analysis employing semi-permeable membrane
SE434914B (sv) * 1975-07-07 1984-08-27 Jonsson U R S Forfarande for att ur en suspension av bakterier och ett vetskeformigt medium genom filtrering avskilja mediet under samtidig anrikning av bakterierna
US4392388A (en) * 1981-02-17 1983-07-12 Westinghouse Electric Corp. Gas sampler for aerosol atmosphere
JPS59142439A (ja) * 1983-02-04 1984-08-15 Denshi Kagaku Kk 透過膜支持容器の構造
US4656865A (en) * 1985-09-09 1987-04-14 The Dow Chemical Company System for analyzing permeation of a gas or vapor through a film or membrane

Also Published As

Publication number Publication date
IT9021721A1 (it) 1992-04-12
GB9021812D0 (en) 1990-11-21
US5054328A (en) 1991-10-08
GB2237518B (en) 1993-07-07
IT9021721A0 (it) 1990-10-12
GB2237518A (en) 1991-05-08
DE4034446A1 (de) 1991-05-08

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19941020