JP6811966B2 - 濃度測定装置 - Google Patents
濃度測定装置 Download PDFInfo
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- JP6811966B2 JP6811966B2 JP2017535234A JP2017535234A JP6811966B2 JP 6811966 B2 JP6811966 B2 JP 6811966B2 JP 2017535234 A JP2017535234 A JP 2017535234A JP 2017535234 A JP2017535234 A JP 2017535234A JP 6811966 B2 JP6811966 B2 JP 6811966B2
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- 238000005259 measurement Methods 0.000 claims description 40
- 238000001514 detection method Methods 0.000 claims description 26
- 239000013307 optical fiber Substances 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 11
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 description 16
- 239000007789 gas Substances 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 238000010926 purge Methods 0.000 description 6
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- 238000010586 diagram Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
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- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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- 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
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
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- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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- General Health & Medical Sciences (AREA)
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- Investigating Or Analysing Materials By Optical Means (AREA)
Description
但し、I0は測定セルに入射する入射光の強度、Iは測定セルを通過した透過光の強度、αはモル吸光係数(m2/mol)、Lは測定セルの光路長(m)、Cは濃度(mol/m3)である。モル吸光係数αは物質によって決まる係数である。
2 入射用光ファイバー
3 光入射窓
4a 流入口
4b 流出口
4 測定セル
5 光出射窓
6 透過光検出器
7 反射光検出器
7a 反射測定用光ファイバー
8a 演算部
12〜15 光源
20 発振回路装置
23 通知部
Claims (12)
- 光入射窓と光出射窓とが対向配置された測定セルを通過した透過光を透過光検出器を用いて検出することにより前記測定セル内の被測定流体の濃度を測定するための濃度測定装置であって、
前記光入射窓の前記測定セル内側の表面付着物により反射された反射光を検出する反射光検出器と、
前記光入射窓に入射させる光を光源から導光するための入射用光ファイバーと、
前記入射用光ファイバーにより導光された入射光を平行光として前記光入射窓を透過させるコリメートレンズと、を備え、
前記反射光検出器が、前記反射光を受光し導光する反射測定用光ファイバーを備え、
前記入射用光ファイバーの前記光入射窓側の端部と前記反射測定用光ファイバーの受光側端部とが隣接して配設されており、
前記コリメートレンズは、前記光入射窓の反射光を屈折させて前記反射測定用光ファイバーに戻すように構成されている、前記濃度測定装置。 - 前記反射光検出器により検出された前記反射光の検出信号が所定範囲を逸脱したことを知らせる通知部を更に備える、請求項1に記載の濃度測定装置。
- 前記反射光検出器による前記反射光の検出信号を用いて、前記透過光の検出信号を補正する演算部を更に備える、請求項1に記載の濃度測定装置。
- 其々が異なる波長の光を発する複数の光源と、前記複数の光源が発する異なる複数の波長の光を合波する少なくとも一つの合波器と、を更に備え、前記合波器により合波された合波光が前記光入射窓に入射される、請求項1に記載の濃度測定装置。
- 前記複数の光源の其々に異なる周波数の駆動電流を流す発振回路装置を更に備える、請求項4に記載の濃度測定装置。
- 前記透過光検出器の検出信号を高速フーリエ変換を用いて周波数解析する演算部を更に備える、請求項5に記載の濃度測定装置。
- 前記反射光検出器の検出信号を高速フーリエ変換を用いて周波数解析する演算部を更に備える、請求項5に記載の濃度測定装置。
- 前記光入射窓に入射する光の光源が紫外光を発光する光源を含む、請求項1に記載の濃度測定装置。
- 前記演算部は、前記反射光検出器の検出信号から、異なる波長毎の前記反射光の強度変化を演算する、請求項7に記載の濃度測定装置。
- 前記演算部は、各波長毎の前記反射光の強度変化に基づいて前記光入射窓の表面付着物の種類を判定する、請求項9に記載の濃度測定装置。
- 前記透過光検出器の検出信号と前記反射光検出器の検出信号とから、前記透過光の強度と前記反射光の強度との比率を演算する演算部を更に備える、請求項1に記載の濃度測定装置。
- 前記演算部は、前記透過光の強度と前記反射光の強度との前記比率の変化割合が所定範囲を逸脱したことを出力する、請求項11に記載の濃度測定装置。
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JP2015161233 | 2015-08-18 | ||
JP2015161233 | 2015-08-18 | ||
PCT/JP2016/003669 WO2017029792A1 (ja) | 2015-08-18 | 2016-08-09 | 濃度測定装置 |
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JPWO2017029792A1 JPWO2017029792A1 (ja) | 2018-05-31 |
JP6811966B2 true JP6811966B2 (ja) | 2021-01-13 |
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US (1) | US10976240B2 (ja) |
JP (1) | JP6811966B2 (ja) |
KR (1) | KR102082172B1 (ja) |
CN (1) | CN107923841B (ja) |
TW (1) | TWI644092B (ja) |
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JP6912766B2 (ja) | 2016-07-29 | 2021-08-04 | 国立大学法人徳島大学 | 濃度測定装置 |
EP3372988B1 (de) * | 2017-03-10 | 2022-10-12 | Sensatronic GmbH | Verfahren und vorrichtung zum messen einer stoffkonzentration in einem gasförmigen medium mittels absorptionsspektroskopie |
WO2019229830A1 (ja) * | 2018-05-29 | 2019-12-05 | 株式会社日立ハイテクソリューションズ | 水質計および水質管理システム |
KR20200034564A (ko) | 2018-09-20 | 2020-03-31 | 주식회사 제우스 | 플로우셀장치 |
CN113508287A (zh) * | 2019-03-29 | 2021-10-15 | 株式会社富士金 | 浓度测定装置 |
US11291876B2 (en) | 2019-04-19 | 2022-04-05 | Kidde Technologies, Inc. | Fire suppression agent composition |
WO2020213385A1 (ja) | 2019-04-19 | 2020-10-22 | 株式会社フジキン | 濃度測定装置 |
US11326998B2 (en) | 2019-04-19 | 2022-05-10 | Kidde Technologies, Inc. | System and method for monitoring a fire suppression blend |
US10953257B2 (en) | 2019-04-19 | 2021-03-23 | Kidde Technologies, Inc. | Fire suppression composition |
US20220283081A1 (en) | 2019-09-18 | 2022-09-08 | Fujikin Incorporated | Density measurement device |
WO2021182279A1 (ja) | 2020-03-13 | 2021-09-16 | 国立大学法人徳島大学 | 濃度測定方法および濃度測定装置 |
DE102021201017A1 (de) | 2021-02-04 | 2022-08-04 | Robert Bosch Gesellschaft mit beschränkter Haftung | Messsystem zur Bestimmung des Zustands eines Hydraulikfluids |
CN118091054B (zh) * | 2024-04-26 | 2024-06-25 | 中凯达电子科技(上海)有限公司 | 一种危险气体在线监测系统和方法 |
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JPS5428683A (en) * | 1977-08-05 | 1979-03-03 | Anritsu Electric Co Ltd | Ammonia gas analyzer by dispersion type ultraviolet ray absorption method |
US5396325A (en) * | 1993-02-22 | 1995-03-07 | The Mercury Iron & Steel Co. | Optical sensor |
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2016
- 2016-08-09 WO PCT/JP2016/003669 patent/WO2017029792A1/ja active Application Filing
- 2016-08-09 US US15/748,264 patent/US10976240B2/en active Active
- 2016-08-09 CN CN201680025238.7A patent/CN107923841B/zh not_active Expired - Fee Related
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TWI644092B (zh) | 2018-12-11 |
KR102082172B1 (ko) | 2020-02-27 |
TW201719148A (zh) | 2017-06-01 |
US20180217054A1 (en) | 2018-08-02 |
WO2017029792A1 (ja) | 2017-02-23 |
CN107923841A (zh) | 2018-04-17 |
KR20170134742A (ko) | 2017-12-06 |
US10976240B2 (en) | 2021-04-13 |
JPWO2017029792A1 (ja) | 2018-05-31 |
CN107923841B (zh) | 2021-07-13 |
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