WO2003046535A3 - Gas ionisation detector - Google Patents

Gas ionisation detector Download PDF

Info

Publication number
WO2003046535A3
WO2003046535A3 PCT/GB2002/005236 GB0205236W WO03046535A3 WO 2003046535 A3 WO2003046535 A3 WO 2003046535A3 GB 0205236 W GB0205236 W GB 0205236W WO 03046535 A3 WO03046535 A3 WO 03046535A3
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
detector
fence
contamination
condensation
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.)
Ceased
Application number
PCT/GB2002/005236
Other languages
French (fr)
Other versions
WO2003046535A2 (en
Inventor
William Francis Houlton Dean
Mark Julian Stockdale
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.)
Ion Science Ltd
Original Assignee
Ion Science 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
Priority claimed from GB0127705A external-priority patent/GB0127705D0/en
Priority claimed from GB0206769A external-priority patent/GB0206769D0/en
Application filed by Ion Science Ltd filed Critical Ion Science Ltd
Priority to AU2002365479A priority Critical patent/AU2002365479A1/en
Priority to CA2467859A priority patent/CA2467859C/en
Priority to US10/479,759 priority patent/US7046012B2/en
Priority to DE60222304T priority patent/DE60222304T2/en
Priority to EP02803860A priority patent/EP1474681B1/en
Publication of WO2003046535A2 publication Critical patent/WO2003046535A2/en
Publication of WO2003046535A3 publication Critical patent/WO2003046535A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • G01N27/62—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

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)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Fertilizing (AREA)
  • Finger-Pressure Massage (AREA)

Abstract

An ionisation detector includes a third (fence) electrode (55) between the counter electrode (53) and the sensing electrode (54). The fence electrode (53) is maintained at or near the potential of the sensing electrode (54) and traps charge movement (electrolytic current) along the detector walls associated with condensation and/or contamination within the detector. In a photoionisation detector, the fence electrode is also adapted to trap photo-induced current originating from the cathode (53). Current drawn from the fence electrode (53) provides a measure of the degree of contamination or condensation within the detector and of lamp efficiency.
PCT/GB2002/005236 2001-11-20 2002-11-20 Gas ionisation detector Ceased WO2003046535A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2002365479A AU2002365479A1 (en) 2001-11-20 2002-11-20 Gas ionisation detector
CA2467859A CA2467859C (en) 2001-11-20 2002-11-20 Ionisation devices
US10/479,759 US7046012B2 (en) 2001-11-20 2002-11-20 Ionization devices
DE60222304T DE60222304T2 (en) 2001-11-20 2002-11-20 GASPHOTOIONISATIONSDETEKTOR
EP02803860A EP1474681B1 (en) 2001-11-20 2002-11-20 Gas photoionisation detector

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0127705A GB0127705D0 (en) 2001-11-20 2001-11-20 Liquid detection
GB0127705.2 2001-11-20
GB0206769.2 2002-03-22
GB0206769A GB0206769D0 (en) 2002-03-22 2002-03-22 Screened photoionisation detectors

Publications (2)

Publication Number Publication Date
WO2003046535A2 WO2003046535A2 (en) 2003-06-05
WO2003046535A3 true WO2003046535A3 (en) 2003-09-12

Family

ID=26246785

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/005236 Ceased WO2003046535A2 (en) 2001-11-20 2002-11-20 Gas ionisation detector

Country Status (8)

Country Link
US (1) US7046012B2 (en)
EP (1) EP1474681B1 (en)
AT (1) ATE372516T1 (en)
AU (1) AU2002365479A1 (en)
CA (1) CA2467859C (en)
DE (1) DE60222304T2 (en)
ES (1) ES2290365T3 (en)
WO (1) WO2003046535A2 (en)

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US20070172959A1 (en) * 2003-12-15 2007-07-26 Fuellemann Joerg Method and device for electrically testing fuels and combustibles by generating a plasma
US7180076B2 (en) * 2004-03-31 2007-02-20 Mine Safety Appliances Company Photoionization detectors, ionization chambers for use in photoionization detectors, and methods of use of photoionization detectors
JP2006019649A (en) * 2004-07-05 2006-01-19 Kobe Steel Ltd Diamond sensor and its manufacturing method
US20080084224A1 (en) * 2006-10-10 2008-04-10 Michael Nystrom Photoionization probe with injection of ionizing vapor
US7815720B2 (en) * 2006-12-27 2010-10-19 Strionair, Inc. Dual-filter electrically enhanced air-filtration apparatus and method
GB2449664B (en) 2007-05-30 2011-12-14 Ion Science Ltd Electrode contact pellet and associated photoionisation detector assembly
EP2028482A1 (en) * 2007-08-18 2009-02-25 Grundfos Management A/S Sensor system for detecting analytes in low concentrations
EP2037264A1 (en) * 2007-09-13 2009-03-18 Technische Universität Hamburg-Harburg Flame ionisation detector
WO2009119050A1 (en) * 2008-03-25 2009-10-01 国立大学法人大阪大学 Electric discharge ionization current detector
JP2011117854A (en) * 2009-12-04 2011-06-16 Osaka Univ Discharge ionization current detector
EP2423680A1 (en) * 2010-08-24 2012-02-29 Stichting IMEC Nederland Nanowire based gas ionization sensor
US8922219B2 (en) 2010-11-30 2014-12-30 General Electric Company Photo-ionization detectors and associated methods thereof
US8969096B2 (en) * 2011-09-01 2015-03-03 Toyota Motor Engineering & Manufacturing North America, Inc. Automotive fogging analyses by xenon UV exposure
GB2537361B (en) * 2015-04-10 2017-05-03 Ion Science Ltd A Water Immersible Detector
US10047437B2 (en) 2015-06-15 2018-08-14 Inficon, Inc. Process gas management system and photoionization detector
KR101720572B1 (en) * 2015-09-14 2017-03-29 연세대학교 산학협력단 Sensor for Volatile Organic Compounds
CN108152359B (en) * 2016-12-02 2024-12-06 上海苏萨电子科技有限公司 A modulatable photoionization sensor comprising a gate electrode and an operating method thereof
CN108776169B (en) * 2018-03-23 2024-02-06 无锡格林通安全装备有限公司 PID gas sensor capable of inhibiting humidity interference
JP6799824B2 (en) * 2018-05-16 2020-12-16 パナソニックＩｐマネジメント株式会社 Liquid processing equipment
GB2584813B (en) 2019-02-20 2022-07-13 Ion Science Ltd A gas detector cell
RU193903U1 (en) * 2019-06-28 2019-11-20 Федеральное государственное унитарное предприятие "Смоленское производственное объединение "Аналитприбор" Photoionization sensor with interchangeable ionization chamber
CN112179975B (en) 2019-07-01 2025-10-21 霍尼韦尔国际公司 Method and system for confining water in a photoionization detector
EP4139671B1 (en) * 2020-04-24 2026-03-25 Mécanique Analytique Inc. Photoionization detector and method for gas sample analysis
US11768177B1 (en) * 2020-05-29 2023-09-26 Molex, Llc Ionization device and method of operating same
WO2022130184A1 (en) * 2020-12-14 2022-06-23 Molex, Llc Photoionization detector and method of operating same
US11143619B1 (en) * 2021-04-12 2021-10-12 Nanova Environmental, Inc. Photo-ionization device with improved linearity and stability
US12455261B2 (en) 2023-03-01 2025-10-28 Mocon, Inc. Photoionization detector having improved gain and reduced humidity sensitivity
US12146854B2 (en) 2023-03-01 2024-11-19 Mocon, Inc. Galvanic current protection for photoionization detector
US12451343B2 (en) 2023-03-01 2025-10-21 Mocon, Inc. Photoionization detector having improved gain and reduced humidity sensitivity
US12461066B2 (en) 2023-06-27 2025-11-04 Applications Uniques Ltd. Condensation mitigation in ionization sensing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114088A (en) * 1977-02-28 1978-09-12 Cecil Alfred Laws Atmospheric ion density measurement
GB2118306A (en) * 1982-01-29 1983-10-26 Univ Surrey Radio gas chromatography
US4454425A (en) * 1981-02-25 1984-06-12 Young Robert A Photoionizer
US5479022A (en) * 1994-06-17 1995-12-26 Varian Associates, Inc. Electron capture detector with guard electrode

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DD133185A1 (en) * 1977-10-04 1978-12-13 Christian Edelmann GLUEHKATODEN-ionization
US4506226A (en) * 1982-05-19 1985-03-19 Lockheed Missiles & Space Company, Inc. Ion concentration monitor
US5116764A (en) * 1988-07-26 1992-05-26 Raymond Annino Dual-column, dual-detector gas detector and analyzer
US5394090A (en) * 1991-02-28 1995-02-28 Wentworth; Wayne E. Improved system for detecting compounds in a gaseous sample using induced photoionizations and electron capture detection
DE19502439B4 (en) * 1994-02-11 2007-08-16 Oc Oerlikon Balzers Ag Method and measuring arrangement for measuring the amount of electrical charge flowing through a vacuum volume range in a given direction per unit time and their use for mass spectrometers
US5773833A (en) * 1996-03-22 1998-06-30 Rae Systems, Inc. Photo-ionization detector for volatile gas measurement
US6404205B1 (en) * 1997-05-09 2002-06-11 Japan Storage Battery Co., Ltd. Method for testing the reliability of an electrochemical gas sensor
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
US6524740B1 (en) * 2000-03-21 2003-02-25 Teledyne Technologies Incorporated Method and apparatus for improved gas sensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114088A (en) * 1977-02-28 1978-09-12 Cecil Alfred Laws Atmospheric ion density measurement
US4454425A (en) * 1981-02-25 1984-06-12 Young Robert A Photoionizer
GB2118306A (en) * 1982-01-29 1983-10-26 Univ Surrey Radio gas chromatography
US5479022A (en) * 1994-06-17 1995-12-26 Varian Associates, Inc. Electron capture detector with guard electrode

Also Published As

Publication number Publication date
WO2003046535A2 (en) 2003-06-05
EP1474681A2 (en) 2004-11-10
US20040168913A1 (en) 2004-09-02
DE60222304D1 (en) 2007-10-18
CA2467859A1 (en) 2003-06-05
AU2002365479A1 (en) 2003-06-10
US7046012B2 (en) 2006-05-16
EP1474681B1 (en) 2007-09-05
ES2290365T3 (en) 2008-02-16
AU2002365479A8 (en) 2003-06-10
ATE372516T1 (en) 2007-09-15
CA2467859C (en) 2013-06-11
DE60222304T2 (en) 2008-06-05

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