JP6836028B2 - ガス濃度検出ユニット及びガス濃度測定方法 - Google Patents
ガス濃度検出ユニット及びガス濃度測定方法 Download PDFInfo
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- JP6836028B2 JP6836028B2 JP2016149304A JP2016149304A JP6836028B2 JP 6836028 B2 JP6836028 B2 JP 6836028B2 JP 2016149304 A JP2016149304 A JP 2016149304A JP 2016149304 A JP2016149304 A JP 2016149304A JP 6836028 B2 JP6836028 B2 JP 6836028B2
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測定光を照射する光源と、光透過性を有するフィルタの光源側の面を覆う不純物成分検知体と、該不純物成分検知体を透過した前記測定光の強度を検出する測定用受光部と、前記不純物成分検知体に前記測定対象ガスを供給する測定対象ガス供給経路と、前記光源から前記不純物成分検知体に向かう測定光が通過する測定用光路と、前記光源から前記不純物成分検知体に向かう測定光の一部を参照光として分割するビームスプリッタと、該ビームスプリッタで分割された前記参照光の強度を検出する参照用受光部とを備え、前記測定用光路の一部と前記測定対象ガス供給経路の一部とが共有されていることを特徴としている。
Claims (2)
- 測定対象ガスに含まれる不純物成分の濃度を連続的に検出するためのガス濃度検出ユニットにおいて、
特定波長の測定光を照射する光源と、
光透過性を有するフィルタの光源側の面を覆う不純物成分検知体と、
該不純物成分検知体を透過した前記測定光の強度を検出する測定用受光部と、
前記不純物成分検知体に前記測定対象ガスを供給する測定対象ガス供給経路と、
前記光源から前記不純物成分検知体に向かう測定光が通過する測定用光路と、
前記光源から前記不純物成分検知体に向かう測定光の一部を参照光として分割するビームスプリッタと、
該ビームスプリッタで分割された前記参照光の強度を検出する参照用受光部とを備え、
前記測定用光路の一部と前記測定対象ガス供給経路の一部とが共有されている
ことを特徴とするガス濃度検出ユニット。 - 請求項1記載のガス濃度検出ユニットを用いた不純物成分濃度の測定方法であって、前記光源から前記測定光を連続して照射しながら、前記測定対象ガスを前記測定対象ガス供給経路に連続して供給し、前記測定用受光部で検出した前記測定光の強度と、前記参照用受光部で検出した前記参照光の強度とを比較し、前記参照光の強度の変化に対応させて前記測定光の強度を補正することを特徴とする不純物成分濃度の測定方法。
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JP2018017650A JP2018017650A (ja) | 2018-02-01 |
JP6836028B2 true JP6836028B2 (ja) | 2021-02-24 |
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JP3059262B2 (ja) * | 1991-10-08 | 2000-07-04 | 日本酸素株式会社 | ガス中の微量水分分析装置 |
JPH1096699A (ja) * | 1996-08-02 | 1998-04-14 | Mitsubishi Heavy Ind Ltd | ガス検知素子及びガス測定装置 |
US20140107943A1 (en) * | 2012-10-17 | 2014-04-17 | Milton Roy Company | Gas intensity calibration method and system |
JP2015049168A (ja) * | 2013-09-03 | 2015-03-16 | 株式会社島津製作所 | ガス吸光度測定装置 |
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