GB2580622B - Method to improve the pressure variation tolerance of gas measurement devices - Google Patents

Method to improve the pressure variation tolerance of gas measurement devices Download PDF

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Publication number
GB2580622B
GB2580622B GB1900645.1A GB201900645A GB2580622B GB 2580622 B GB2580622 B GB 2580622B GB 201900645 A GB201900645 A GB 201900645A GB 2580622 B GB2580622 B GB 2580622B
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GB
United Kingdom
Prior art keywords
improve
measurement devices
pressure variation
gas measurement
variation tolerance
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.)
Active
Application number
GB1900645.1A
Other versions
GB201900645D0 (en
GB2580622A (en
Inventor
Dinsdale Steven
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.)
Cambustion Ltd
Original Assignee
Cambustion 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 Cambustion Ltd filed Critical Cambustion Ltd
Priority to GB1900645.1A priority Critical patent/GB2580622B/en
Publication of GB201900645D0 publication Critical patent/GB201900645D0/en
Publication of GB2580622A publication Critical patent/GB2580622A/en
Application granted granted Critical
Publication of GB2580622B publication Critical patent/GB2580622B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • G01N1/2252—Sampling from a flowing stream of gas in a vehicle exhaust
    • 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
    • G01N33/0016—Sample conditioning by regulating a physical variable, e.g. pressure or temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/6402—Atomic fluorescence; Laser induced fluorescence
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/76—Chemiluminescence; Bioluminescence
    • G01N21/766—Chemiluminescence; Bioluminescence of gases
    • 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
    • G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G01N33/0047—Organic compounds

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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
GB1900645.1A 2019-01-17 2019-01-17 Method to improve the pressure variation tolerance of gas measurement devices Active GB2580622B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1900645.1A GB2580622B (en) 2019-01-17 2019-01-17 Method to improve the pressure variation tolerance of gas measurement devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1900645.1A GB2580622B (en) 2019-01-17 2019-01-17 Method to improve the pressure variation tolerance of gas measurement devices

Publications (3)

Publication Number Publication Date
GB201900645D0 GB201900645D0 (en) 2019-03-06
GB2580622A GB2580622A (en) 2020-07-29
GB2580622B true GB2580622B (en) 2021-04-07

Family

ID=65528262

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1900645.1A Active GB2580622B (en) 2019-01-17 2019-01-17 Method to improve the pressure variation tolerance of gas measurement devices

Country Status (1)

Country Link
GB (1) GB2580622B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5753185A (en) * 1996-04-23 1998-05-19 California Analytical Instruments, Inc. Vehicle emissions testing system
US20180163666A1 (en) * 2016-12-14 2018-06-14 Horiba, Ltd. Gas analysis device, gas sampling device and gas analysis method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5753185A (en) * 1996-04-23 1998-05-19 California Analytical Instruments, Inc. Vehicle emissions testing system
US20180163666A1 (en) * 2016-12-14 2018-06-14 Horiba, Ltd. Gas analysis device, gas sampling device and gas analysis method

Also Published As

Publication number Publication date
GB201900645D0 (en) 2019-03-06
GB2580622A (en) 2020-07-29

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