CA2299365A1 - Dispositif de detection de gaz et procede - Google Patents

Dispositif de detection de gaz et procede Download PDF

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Publication number
CA2299365A1
CA2299365A1 CA002299365A CA2299365A CA2299365A1 CA 2299365 A1 CA2299365 A1 CA 2299365A1 CA 002299365 A CA002299365 A CA 002299365A CA 2299365 A CA2299365 A CA 2299365A CA 2299365 A1 CA2299365 A1 CA 2299365A1
Authority
CA
Canada
Prior art keywords
electrode
flow passages
detection device
gases
gas detection
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.)
Abandoned
Application number
CA002299365A
Other languages
English (en)
Inventor
Christopher David Jones
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.)
UK Secretary of State for Defence
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2299365A1 publication Critical patent/CA2299365A1/fr
Abandoned legal-status Critical Current

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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
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
    • G01N27/66—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber and measuring current or voltage
    • 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
    • G01N33/0022—General constructional details of gas analysers, e.g. portable test equipment using a number of analysing channels
    • 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

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

La présente invention concerne un dispositif de détection de gaz permettant de distinguer en un seul point deux gaz émis simultanément et, en particulier, de mesurer la concentration individuelle de chaque gaz en ce point. Le dispositif comprend deux passages de flux dans lesquels on introduit un échantillon comprenant les deux gaz, des moyens d'aspiration de gaz permettant d'attirer l'échantillon dans et à travers les passages de flux et des moyens permettant d'irradier chacun des passages de flux avec des rayonnements ultraviolets d'énergie différente. Le dispositif peut comprendre deux sources de rayonnements ultraviolets, chacune des sources (par exemple, une lampe à krypton et un lampe à argon) émettant des rayonnements dans l'un des passages de flux. L'irradiation des gaz (par exemple du propane et du propylène) de l'échantillon permet d'ioniser ces gaz, l'un d'eux étant ionisé par le rayonnement dans l'un des passages de flux et l'autre étant ionisé par le rayonnement dans les deux passages de flux. A chaque passage de flux sont associées une électrode de polarisation et une électrode collectrice qui sont disposées en aval des passages de flux irradiés. Les courants dans l'électrode collectrice fournissent une indication du ou des gaz ionisés dans chaque passage de flux. L'invention se rapporte également à un procédé permettant de mesurer, en un seul point, les concentrations individuelles des deux gaz émis simultanément. On peut utiliser cette mesure pour la mise au point de modèles et d'autres instruments permettant de déterminer les dangers ou nuisances dues aux gaz. Le dispositif et le procédé de la présente invention possèdent une application particulière dans la surveillance de la pollution, la détection de gaz de dépistage atmosphérique et dans le suivi des processus d'émission de gaz ou de vapeurs.
CA002299365A 1997-08-07 1998-08-05 Dispositif de detection de gaz et procede Abandoned CA2299365A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9716701.9A GB9716701D0 (en) 1997-08-07 1997-08-07 Gas detection device and method
GB9716701.9 1997-08-07
PCT/GB1998/002354 WO1999008102A1 (fr) 1997-08-07 1998-08-05 Dispositif de detection de gaz et procede

Publications (1)

Publication Number Publication Date
CA2299365A1 true CA2299365A1 (fr) 1999-02-18

Family

ID=10817122

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002299365A Abandoned CA2299365A1 (fr) 1997-08-07 1998-08-05 Dispositif de detection de gaz et procede

Country Status (4)

Country Link
EP (1) EP1002230A1 (fr)
CA (1) CA2299365A1 (fr)
GB (2) GB9716701D0 (fr)
WO (1) WO1999008102A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220187245A1 (en) * 2020-12-14 2022-06-16 Molex, Llc Photoionization detector and method of operating same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6320388B1 (en) * 1999-06-11 2001-11-20 Rae Systems, Inc. Multiple channel photo-ionization detector for simultaneous and selective measurement of volatile organic compound
JP4164399B2 (ja) * 2003-04-11 2008-10-15 キヤノン株式会社 Ｅｕｖ光源のガス流量計測装置および測定方法
KR102611218B1 (ko) * 2021-11-22 2023-12-08 한국전자기술연구원 광이온화 가스 센서

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827936B1 (fr) * 1968-08-26 1973-08-28
WO1993002354A1 (fr) * 1991-07-19 1993-02-04 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Procede et dispositif de detection de gaz
DE4305704B4 (de) * 1993-02-25 2006-02-16 Matter + Siegmann Ag Verfahren und Vorrichtung zur Untersuchung von in einem Gas befindlichen Partikeln
AU6146394A (en) * 1993-03-05 1994-09-26 Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland, The Gas detection devices
RU2063093C1 (ru) * 1994-06-01 1996-06-27 Фирма - Ауергеселшафт Ультрафиолетовая лампа для фотоионизационного детектирования

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220187245A1 (en) * 2020-12-14 2022-06-16 Molex, Llc Photoionization detector and method of operating same
US11604164B2 (en) * 2020-12-14 2023-03-14 Molex, Llc Photoionization detector and method of operating same
US20230194474A1 (en) * 2020-12-14 2023-06-22 Molex, Llc Photoionization detector and method of operating same
US11885766B2 (en) * 2020-12-14 2024-01-30 Molex, Llc Photoionization detector and method of operating same

Also Published As

Publication number Publication date
EP1002230A1 (fr) 2000-05-24
GB0001867D0 (en) 2000-03-22
WO1999008102A1 (fr) 1999-02-18
GB2343003A (en) 2000-04-26
GB9716701D0 (en) 1997-10-15

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Legal Events

Date Code Title Description
FZDE Discontinued