JP2019505001A - 光干渉性ガス不純物の量を定量化する方法 - Google Patents
光干渉性ガス不純物の量を定量化する方法 Download PDFInfo
- Publication number
- JP2019505001A JP2019505001A JP2018542172A JP2018542172A JP2019505001A JP 2019505001 A JP2019505001 A JP 2019505001A JP 2018542172 A JP2018542172 A JP 2018542172A JP 2018542172 A JP2018542172 A JP 2018542172A JP 2019505001 A JP2019505001 A JP 2019505001A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- sample
- detector
- concentration
- inlet
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 40
- 239000012535 impurity Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000001427 coherent effect Effects 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 360
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 96
- 238000010521 absorption reaction Methods 0.000 claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 29
- 239000003345 natural gas Substances 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 18
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 23
- 238000004458 analytical method Methods 0.000 claims description 8
- 229930195733 hydrocarbon Natural products 0.000 claims description 7
- 150000002430 hydrocarbons Chemical class 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 abstract description 3
- 239000000523 sample Substances 0.000 description 64
- 230000006870 function Effects 0.000 description 11
- 230000035945 sensitivity Effects 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 7
- 230000031700 light absorption Effects 0.000 description 5
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 235000013405 beer Nutrition 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000013074 reference sample Substances 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 239000001273 butane Substances 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000035 biogenic effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002680 soil gas Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/274—Calibration, base line adjustment, drift correction
- G01N21/276—Calibration, base line adjustment, drift correction with alternation of sample and standard in optical path
-
- 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
- G01N21/17—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
- G01N21/37—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using pneumatic detection
-
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/85—Investigating moving fluids or granular solids
-
- 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
- G01N33/0026—General constructional details of gas analysers, e.g. portable test equipment using an alternating circulation of another gas
-
- 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
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
-
- 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
- G01N2021/3545—Disposition for compensating effect of interfering gases
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
【解決手段】試料ガス入口12、基準ガス入口14、ガス変調バルブ16、および赤外線吸収式ガス検出器24を備えるガス検出システムにおいて光干渉性ガス不純物の量を定量化する方法は、ガス変調バルブ16が、試料ガス期間では試料ガス入口12を、基準ガス期間では基準ガス入口14を、ガス検出器24に交互に接続し、れ異なる試料ガス期間対基準ガス期間比率で得られる少なくとも2つの相異なる試料ガス濃度について、赤外線吸収を測定し、相異なる測定信号の振幅を、メタン又は天然ガス中の干渉性ガス不純物の量を様々に異ならせた場合の信号振幅対ガス濃度を表す較正関数と比較し、サンプリングされたガス中の実際のガス不純物濃度を決定する。
【選択図】図5
Description
キュベットを基準ガスでパージするステップと;
前記キュベットの所定部分(X%)に試料ガスを注入するために要する期間のあいだ、変調装置を切り替えることにより、前記キュベットの前記所定部分(X%)に前記試料ガスを充填するステップと;
X%平均試料濃度での赤外線吸収信号を記録するステップと;
基準ガスをさらに注入して、前記キュベットの試料ガスが充填された部分をY%(Y<X)に減少させるステップと;
Y%平均試料濃度での赤外線吸収信号を記録するステップと;
記録された2つの前記信号を適切な伝達関数又は感度曲線に対してフィッティングして、
干渉性不純物濃度を決定するステップと、であってもよい。
14 基準ガス入口
16 ガス変調バルブ
18 試料ガス導管
20 基準ガス導管
22 ガス流路
24 赤外線吸収式ガス検出器
26 真空ポンプ
28 入口
30 吸光キュベット
32 出口
34 赤外線光源
36 赤外線センサ
39 光学フィルタ
Claims (6)
- 試料ガス入口(12)、基準ガス入口(14)、ガス変調バルブ(16)、およびメタン又は天然ガスの分析に用いられる赤外線吸収式ガス検出器(24)を備えるガス検出システムにおける光干渉性ガス不純物の量を定量化する方法であって、
前記ガス変調バルブ(16)が、試料ガス期間では前記試料ガス入口(12)を前記ガス検出器(24)に、基準ガス期間では前記基準ガス入口(14)を前記ガス検出器(24)に、交互に接続する、方法において、
それぞれ異なる試料ガス期間対基準ガス期間比率で取得され、前記ガス検出器(24)における濃度が異なる、少なくとも2つの相異なる試料ガス濃度について、赤外線吸収を測定し、
相異なる測定信号の振幅を、メタン又は天然ガス中の干渉性ガス不純物の量が異なる場合の信号振幅対ガス濃度を表す較正関数と対比することにより、サンプリングされたガス中の実際のガス不純物濃度を決定することを特徴とする、方法。 - 試料ガス入口、基準ガス入口、ガス変調バルブ(16)、およびメタン又は天然ガスの分析に用いられる赤外線吸収式ガス検出器(24)を備えるガス検出システムでの光干渉性ガス不純物の量を定量化する方法であって、
前記ガス変調バルブ(16)は、前記試料ガス入口(12)を前記ガス検出器(24)に、前記基準ガス入口(14)を前記ガス検出器(24)に、ガス変調周波数で交互に接続する方法において、
前記ガス変調周波数での第1の測定、および前記ガス変調周波数の少なくとも第1の偶数倍音での少なくとも第2の測定で得られ、前記ガス検出器(24)内での濃度が異なる、少なくとも2つの相異なる試料ガス濃度について、赤外線吸収を測定し、
相異なる測定信号の振幅を、メタン又は天然ガス中の干渉性ガス不純物の量が異なる場合の信号振幅対ガス濃度を表す較正関数と対比することにより、サンプリングされたガス中の実際のガス不純物濃度を決定することを特徴とする、方法。 - 請求項1または2に記載の方法において、前記赤外線吸収を、3つ以上の相異なる試料ガス濃度で測定して、前記較正関数と比較することにより、前記サンプリングされたガス中の実際のガス不純物濃度を決定する、方法。
- 請求項1から3のいずれか一項に記載の方法において、前記サンプリングされたガスが天然ガスであり、かつ、前記干渉性不純物ガスがエタン、空気よりも重い他種の炭化水素、あるいは、空気よりも重い他種の少なくとも1種の炭化水素とエタンとの混合物である、方法。
- 請求項1から4のいずれか一項に記載の方法において、前記ガス検出器(24)の赤外線光源が、前記ガス変調周波数よりも低いランプ変調周波数でオンとオフとを繰返し切り替えられて(変調されて)、前記ガス検出器(24)の前記測定信号が、前記ランプ変調周波数の整数倍で分析される、方法。
- 請求項1から5のいずれか一項に記載の方法において、前記ガス変調周波数が、前記ランプ変調周波数の整数倍である、方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16155276.5 | 2016-02-11 | ||
EP16155276.5A EP3206019A1 (en) | 2016-02-11 | 2016-02-11 | Method for quantifying the amount of optically interfering gas impurities |
PCT/EP2017/053012 WO2017137565A1 (en) | 2016-02-11 | 2017-02-10 | Method for quantifying the amount of optically interfering gas impurities |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2019505001A true JP2019505001A (ja) | 2019-02-21 |
JP2019505001A5 JP2019505001A5 (ja) | 2020-03-12 |
JP6987066B2 JP6987066B2 (ja) | 2021-12-22 |
Family
ID=55405131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018542172A Active JP6987066B2 (ja) | 2016-02-11 | 2017-02-10 | 光干渉性ガス不純物の量を定量化する方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10436708B2 (ja) |
EP (2) | EP3206019A1 (ja) |
JP (1) | JP6987066B2 (ja) |
CN (1) | CN108603844B (ja) |
WO (1) | WO2017137565A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019184551A (ja) * | 2018-04-17 | 2019-10-24 | 東京瓦斯株式会社 | ガス種特定精度調整装置、簡易式ガス種特定装置、ガス種特定システム、ガス種特定精度調整方法、及びプログラム |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019244613A1 (ja) * | 2018-06-19 | 2019-12-26 | 国立研究開発法人物質・材料研究機構 | 受容体応答変調方法及び受容体応答の変調を利用した測定装置 |
CN113465826A (zh) * | 2021-05-26 | 2021-10-01 | 北京市燃气集团有限责任公司 | 一种燃气泄漏检测方法与装置 |
CN117368424B (zh) * | 2023-12-08 | 2024-02-27 | 广东立腾医疗科技有限公司 | 气体浓度检测补偿方法、装置、气体检测设备及存储介质 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63311146A (ja) * | 1987-06-13 | 1988-12-19 | Horiba Ltd | ガス分析計 |
JPH06103259B2 (ja) * | 1987-12-29 | 1994-12-14 | 株式会社堀場製作所 | マルチ流体変調方式による流体分析装置における相互干渉低減方法 |
JPH079397B2 (ja) * | 1987-12-11 | 1995-02-01 | 株式会社堀場製作所 | 流体分析方法 |
US20150276588A1 (en) * | 2014-03-31 | 2015-10-01 | Redshift Systems Corporation | Fluid analyzer with modulation for liquids and gases |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56122935A (en) * | 1980-03-01 | 1981-09-26 | Horiba Ltd | Gas analyzing device of fluid modulation system |
US5102806A (en) * | 1987-12-11 | 1992-04-07 | Horiba, Ltd. | Method for analyzing fluid by multi-fluid modulation mode |
IL121793A (en) * | 1997-09-17 | 2008-06-05 | Lewis Coleman | Isotopic gas analyzer |
DE19911260A1 (de) | 1999-03-13 | 2000-09-14 | Leybold Vakuum Gmbh | Infrarot-Gasanalysator und Verfahren zum Betrieb dieses Analysators |
US6473175B1 (en) | 2000-04-19 | 2002-10-29 | Praxair Technology, Inc. | Method for analyzing impurities in a gas stream |
DE10062126A1 (de) * | 2000-12-13 | 2002-06-20 | Inficon Gmbh | Verfahren zur Feststellung eines Gases mit Hilfe eines Infrarot-Gasanlaysators sowie für die Durchführung dieser Verfahren geigneter Gasanalysator |
DE102008008262A1 (de) * | 2008-02-08 | 2009-08-13 | Inficon Gmbh | Schnüffellecksucher nach dem Referenzmessprinzip |
DE102008027630A1 (de) * | 2008-06-05 | 2009-12-10 | Filt Lungen- Und Thoraxdiagnostik Gmbh | Transportabler Pneumotachograph zur Messung von Bestandteilen des Exspirationsvolumens |
CN202614672U (zh) * | 2012-03-30 | 2012-12-19 | 湖北金为电子有限公司 | 红外差分吸收光谱法烷烃气体实时在线检测装置 |
EP3163299B1 (en) | 2015-10-29 | 2019-05-15 | Inficon GmbH | Gas detection using gas modulation |
EP3163290B1 (en) | 2015-10-29 | 2018-08-29 | Inficon GmbH | Infrared gas detector with secondary sensor |
EP3193166B1 (en) | 2016-01-13 | 2019-12-18 | Inficon GmbH | Wide range gas detection using an infrared gas detector |
-
2016
- 2016-02-11 EP EP16155276.5A patent/EP3206019A1/en not_active Withdrawn
-
2017
- 2017-02-10 WO PCT/EP2017/053012 patent/WO2017137565A1/en active Application Filing
- 2017-02-10 EP EP17704748.7A patent/EP3414556A1/en active Pending
- 2017-02-10 CN CN201780010650.6A patent/CN108603844B/zh active Active
- 2017-02-10 JP JP2018542172A patent/JP6987066B2/ja active Active
- 2017-02-10 US US16/076,729 patent/US10436708B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63311146A (ja) * | 1987-06-13 | 1988-12-19 | Horiba Ltd | ガス分析計 |
JPH079397B2 (ja) * | 1987-12-11 | 1995-02-01 | 株式会社堀場製作所 | 流体分析方法 |
JPH06103259B2 (ja) * | 1987-12-29 | 1994-12-14 | 株式会社堀場製作所 | マルチ流体変調方式による流体分析装置における相互干渉低減方法 |
US20150276588A1 (en) * | 2014-03-31 | 2015-10-01 | Redshift Systems Corporation | Fluid analyzer with modulation for liquids and gases |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019184551A (ja) * | 2018-04-17 | 2019-10-24 | 東京瓦斯株式会社 | ガス種特定精度調整装置、簡易式ガス種特定装置、ガス種特定システム、ガス種特定精度調整方法、及びプログラム |
JP7030603B2 (ja) | 2018-04-17 | 2022-03-07 | 東京瓦斯株式会社 | ガス種特定精度調整装置、簡易式ガス種特定装置、ガス種特定システム、ガス種特定精度調整方法、及びプログラム |
Also Published As
Publication number | Publication date |
---|---|
CN108603844B (zh) | 2021-06-18 |
CN108603844A (zh) | 2018-09-28 |
US20190041317A1 (en) | 2019-02-07 |
WO2017137565A1 (en) | 2017-08-17 |
JP6987066B2 (ja) | 2021-12-22 |
EP3414556A1 (en) | 2018-12-19 |
EP3206019A1 (en) | 2017-08-16 |
US10436708B2 (en) | 2019-10-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6987066B2 (ja) | 光干渉性ガス不純物の量を定量化する方法 | |
CN102272564B (zh) | 用于执行光学吸收测量的方法和系统 | |
US11137349B2 (en) | Apparatus and method for detecting phase changes in a fluid using spectral recognition | |
EP2895828A1 (en) | Method and system for determining energy content and detecting contaminants in a fluid stream | |
CA2673952A1 (en) | Leak detection system and method | |
RU2336518C2 (ru) | Фотоакустический способ измерения концентрации неуглеводородного компонента в метаносодержащей газовой смеси | |
JP2014517925A (ja) | レーザーに基づく温度非感受性の二酸化炭素アイソトープ比測定 | |
US20100015714A1 (en) | Measurement of soil pollution | |
JP2019505001A5 (ja) | ||
US10866225B2 (en) | Wide range gas detection using an infrared gas detector | |
Ivascu et al. | CO2 laser photoacoustic measurements of ethanol absorption coefficients within infrared region of 9.2–10.8 μm | |
JP3858844B2 (ja) | 炭酸ガスの地中固定におけるガスモニタリング装置およびガスモニタリング方法 | |
Liu et al. | A flexible method of carbonate determination using an automatic gas analyzer equipped with an FTIR photoacoustic measurement chamber | |
WO1993020429A1 (en) | Infrared analyzer for determining the concentration of multiple chemical components in a gas or liquid | |
EP3933403A1 (en) | Natural gas and hydrogen detector and method for detecting the concentration of hydrogen within a gas sample | |
Kuster et al. | Inter-comparison of laser photoacoustic spectroscopy and gas chromatography techniques for measurements of ethene in the atmosphere | |
US11828705B2 (en) | Apparatus and method for spectroscopically detecting a sample | |
Bahr et al. | PAS-based analysis of natural gas samples | |
Wei et al. | Near-IR diode laser-based sensor for remote sensing of methane leakage. | |
Saini et al. | Measurement of hydrocarbons in produced water using fiber optic sensor technology | |
CN103954585A (zh) | 一种烟气监测系统及其方法 | |
Stockwell | Tunable Diode Laser (TDL) systems for trace gas analysis | |
Ageev et al. | Analysis of technical gases by opto-acoustic method of laser spectroscopy |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200128 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20200128 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20210106 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20210224 |
|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20210406 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210524 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20211102 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20211130 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6987066 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |