GB2343003A - Gas detection device and method - Google Patents

Gas detection device and method

Info

Publication number
GB2343003A
GB2343003A GB0001867A GB0001867A GB2343003A GB 2343003 A GB2343003 A GB 2343003A GB 0001867 A GB0001867 A GB 0001867A GB 0001867 A GB0001867 A GB 0001867A GB 2343003 A GB2343003 A GB 2343003A
Authority
GB
United Kingdom
Prior art keywords
flow passages
gases
gas
ionised
radiation
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.)
Withdrawn
Application number
GB0001867A
Other versions
GB0001867D0 (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
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Publication of GB0001867D0 publication Critical patent/GB0001867D0/en
Publication of GB2343003A publication Critical patent/GB2343003A/en
Withdrawn legal-status Critical Current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
    • 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

A gas detection device for distinguishing at a single point, two simultaneously emitted gases and, and in particular, for measuring the individual concentration of each gas at the point, comprising two flow passages into which a sample comprising the two gases is input, gas induction means for drawing the sample into and through the flow passages and means for irradiating each of the flow passages with ultraviolet radiation of a different energy. The device may comprise two sources of ultraviolet radiation, wherein each of the sources (e.g. a krypton and an argon lamp) emits radiation into one of the flow passages. Upon irradiation of the gases (e.g. propane and propylene) within the sample the gases are ionised, one of them being ionised by radiation in one of the flow passages and the other being ionised by radiation in both of the flow passages. Each flow passage has an associated bias electrode, and a collector electrode which are arranged downstream of the irradiated flow passages. The currents at the collector electrodes give an indication of the ionised gas (or gases) in each flow passage. The invention also relates to a method of measuring, at a single point, the individual concentrations of two simultaneously emitted gases. This measurement may be used in the development of models and other tools for determining, for example, gas hazard or nuisance. The device and method have particular application in environmental pollution monitoring. atmospheric tracer gas detection and in the monitoring of gas or vapour emitting processes.
GB0001867A 1997-08-07 1998-08-05 Gas detection device and method Withdrawn GB2343003A (en)

Applications Claiming Priority (2)

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

Publications (2)

Publication Number Publication Date
GB0001867D0 GB0001867D0 (en) 2000-03-22
GB2343003A true GB2343003A (en) 2000-04-26

Family

ID=10817122

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9716701.9A Ceased GB9716701D0 (en) 1997-08-07 1997-08-07 Gas detection device and method
GB0001867A Withdrawn GB2343003A (en) 1997-08-07 1998-08-05 Gas detection device and method

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9716701.9A Ceased GB9716701D0 (en) 1997-08-07 1997-08-07 Gas detection device and method

Country Status (4)

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

Families Citing this family (4)

* 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 (en) * 2003-04-11 2008-10-15 キヤノン株式会社 Gas flow measuring device and measuring method for EUV light source
EP4260056A1 (en) * 2020-12-14 2023-10-18 Molex, LLC Photoionization detector and method of operating same
KR102611218B1 (en) * 2021-11-22 2023-12-08 한국전자기술연구원 Photoionization gas sensor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2016372A1 (en) * 1968-08-26 1970-05-08 Matsushita Electric Ind Co Ltd
EP0524022A1 (en) * 1991-07-19 1993-01-20 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Gas detection device and method
GB2275535A (en) * 1993-02-25 1994-08-31 Abb Research Ltd Process and device for investigating particles situated in a gas
WO1994020845A1 (en) * 1993-03-05 1994-09-15 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Gas detection devices
EP0694954A2 (en) * 1994-06-01 1996-01-31 Auergesellschaft Gmbh Ultraviolet lamp for detecting photoionization

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2016372A1 (en) * 1968-08-26 1970-05-08 Matsushita Electric Ind Co Ltd
EP0524022A1 (en) * 1991-07-19 1993-01-20 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Gas detection device and method
GB2275535A (en) * 1993-02-25 1994-08-31 Abb Research Ltd Process and device for investigating particles situated in a gas
WO1994020845A1 (en) * 1993-03-05 1994-09-15 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Gas detection devices
EP0694954A2 (en) * 1994-06-01 1996-01-31 Auergesellschaft Gmbh Ultraviolet lamp for detecting photoionization

Also Published As

Publication number Publication date
WO1999008102A1 (en) 1999-02-18
CA2299365A1 (en) 1999-02-18
GB0001867D0 (en) 2000-03-22
EP1002230A1 (en) 2000-05-24
GB9716701D0 (en) 1997-10-15

Similar Documents

Publication Publication Date Title
DE69826117D1 (en) DETECTION OF MEDICAL CONDITIONS BY ANALYZING EXHAUSTED GAS OR VAPOR
DE69028370D1 (en) HIGHLY SENSITIVE FLUORESCENT PARTICLES, DEVICE AND METHOD FOR DETECTING INDIVIDUAL MOLECULES
EP1380833A3 (en) Apparatus for spectrometrically measuring isotopic gas
JP3332921B2 (en) Apparatus and method for detecting gas
FI895507A0 (en) FOERFARANDE OCH ANORDNING FOER PRODUCERING AV EN STANDARD GASBLANDNING.
ATE542128T1 (en) METHOD FOR DETECTING DEFECTS IN TRANSPARENT MATERIAL
EP1110076A4 (en) Laser-induced ionisation spectroscopy, particularly for coal
ES2142839T3 (en) PROCESS TO DETERMINE THE CONCENTRATION AND DISTRIBUTION OF CARBON BLACK IN RUBBER COMPOUNDS AND IN OTHER MATERIALS CONTAINING CARBON BLACK AND DEVICE TO CARRY OUT SUCH PROCESS.
ATE408237T1 (en) METHOD AND DEVICE FOR ASSESSING THE CONDITION OF ORGANISMS AND NATURAL PRODUCTS AND FOR ANALYZING A GASEOUS MIXTURE WITH MAIN AND SECONDARY COMPONENTS
ATE61667T1 (en) METHOD AND DEVICE FOR DETECTING MINOR QUANTITIES OF GASES OR VAPORS IN GAS MIXTURES.
US4388411A (en) Apparatus and method for detecting fluid
US5701009A (en) Gas detection devices
ATE356989T1 (en) METHOD AND DEVICE FOR GAS DISCHARGE SPECTROSCOPY
GB2343003A (en) Gas detection device and method
DE60311643D1 (en) METHOD FOR THE ANALYSIS OF PHARMACEUTICAL SAMPLES
DE602005012443D1 (en) Detection of special minority gases with optical emission spectroscopy
CN111983008B (en) Small photoionization detector and detection method thereof
KR100545455B1 (en) A gas detector with interior cleaner
GB2310717A (en) Quantitative detection of chemical species
FI94466C (en) Gas detector
BR9912646A (en) Method for measuring spectral absorption of a body, and apparatus for method implementation
DE59813004D1 (en) Method and device for the analytical detection of traces
CN207472823U (en) A kind of high life photoion gas detector
Freese A Direct Method to Measure Tropospheric Ozone by Absorption Spectroscopy in the Ultra-Violet Region
BR8009122A (en) SYSTEM AND PROCESS FOR MEASURING THE CONCENTRATION OF A GAS IN A GAS FLOW CURRENT

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)