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1. 发明公开

EP3344962A1 METHOD AND APPARATUS FOR THE SPECTROSCOPIC DETECTION OF LOW CONCENTRATIONS OF HYDROGEN SULFIDE GAS 审中-公开
公开(公告)号：EP3344962A1
公开(公告)日：2018-07-11
申请号：EP16843018.9
申请日：2016-09-01
申请人： California Institute of Technology
发明人： VASUDEV, Ramabhadran
IPC分类号： G01J3/06 , G01J3/16 , G01J3/02 , G01N1/40
CPC分类号： G01N21/39 , G01J3/42 , G01J2003/423 , G01N21/031 , G01N2021/391 , G01N2201/0698
摘要： Spectroscopic apparatus and methods incorporating a gas sensor configured to detect low concentration gases, including gases that are hazardous volatiles are provided. Low concentration gases can comprise gases where detection of concentrations on the order of parts-per-million (ppm), and in many embodiments part-per-billion (ppb) is required. The gas may be a species, such as, for example hydrogen sulfide (H2S) that may be produced in drilling and/or volcanic eruptions. The spectroscopic apparatus and methods are configured to operate in particular atmospheres where gas detection can be challenging, such as in ambient air and/or in space where various contaminants may be present. The spectroscopic apparatus and methods may incorporate a long path length detector, such as, for example, a cavity-enhanced absorption spectrometer. The methods and apparatus further incorporate a wavelength modulation technique to improve the signal-to-noise ratio.

2. 发明公开

EP3011314A1 TUNABLE DIODE LASER ABSORPTION SPECTROSCOPY WITH WATER VAPOR DETERMINATION 有权转让
标题翻译： ABSTIMMBARE DIODENLASER-ABSORPTIONSSPEKTROSKOPIE MIT WASSERDAMPFBESTIMMUNG
公开(公告)号：EP3011314A1
公开(公告)日：2016-04-27
申请号：EP14814152.6
申请日：2014-06-19
申请人： Rosemount Analytical Inc.
发明人： KLUCZYNSKI, Pawel
IPC分类号： G01N21/39 , G01J3/42
CPC分类号： G01N21/27 , G01J3/0205 , G01J3/021 , G01J3/42 , G01J3/433 , G01J3/4338 , G01J2003/423 , G01N21/39
摘要： A gas absorption spectroscopy system and method are provided. A sealed chamber is provided with a reference gas having a known moisture concentration. An illumination source (112) is disposed in the sealed chamber and is configured to generate an illumination beam. A measurement cell (104) is coupled to the sealed chamber and is configured for exposure to a gas sample (106) such that illumination (118) travelling through the measurement cell (104) passes through the gas sample (106). A process window (116) is disposed between the sealed chamber and the measurement cell (104). The process window (116) is configured to receive the illumination beam from the illumination source (112) and reflect a first portion (128) of illumination while allowing a second portion (118) of illumination to pass into the measurement cell (104). A reference detector (110) is disposed to receive the first portion (128) of illumination and provide a reference detector signal. A measurement detector (108) is disposed to receive the second portion (124) of illumination after the second portion of illumination has passed through the measurement cell (104) and provide a measurement detector signal. A controller (105) is coupled to the reference detector (110) and the measurement detector (108) and is configured to provide a compensated moisture output based on the reference detector signal and the measurement detector signal.
摘要翻译：提供了一种气体吸收光谱系统和方法。密封室具有已知水分浓度的参考气体。照明源设置在密封室中并且被配置为产生照明光束。测量单元耦合到密封室，并且被配置为暴露于气体样品，使得穿过测量单元的照明通过气体样品。处理窗口设置在密封室和测量池之间。过程窗口被配置为从照明源接收照明光束并且反射照明的第一部分，同时允许第二部分照射进入测量单元。设置参考检测器以接收照明的第一部分并提供参考检测器信号。设置测量检测器以在第二部分照射通过测量单元之后接收照明的第二部分，并提供测量检测器信号。控制器耦合到参考检测器和测量检测器，并且被配置为基于参考检测器信号和测量检测器信号来提供经补偿的湿度输出。

3. 发明授权

EP1535047B1 METHOD FOR DETECTING GASES BY ABSORPTION SPECTROSCOPY 有权
标题翻译：法气体通过吸收谱检测
公开(公告)号：EP1535047B1
公开(公告)日：2009-06-24
申请号：EP02778230.9
申请日：2002-09-06
申请人： TDW DELAWARE, INC.
发明人： BOUNAIX, Fabrice, Marcel, S.
IPC分类号： G01N21/35 , G01J3/42 , G01N21/03 , G01N21/39
CPC分类号： G01N21/3504 , G01J3/42 , G01J2003/423 , G01N21/031 , G01N21/39 , G01N2021/0307 , G01N2021/052 , G01N2021/399 , G01N2201/0612 , G01N2201/062
摘要： A method and device for measuring a concentration of a preselected gas in a gas sample are disclosed. The device comprises a Herriott type multipass cell (10) having a center axle (74) and a housing (80A, 80B) surrounding and spaced from the axle to provide a tubular sample cavity (84). The gas sample is pumped through the sample cavity via apertures (154, 156) provided in opposed ends of the axle. A first mirror (44) and a second mirror (46) are supported at opposed ends of the axle. A light source, e.g. a laser or LED, is provided for emitting a light beam into the sample cavity via an entry aperture (30) in the first mirror, the light beam having a wave length at which the preselected gas strongly absorbs. The beam is reflected between the mirrors for a number of times before exiting the cell via an exit aperture (48) in the second mirror and impinging on a detector (52). The device further comprises a reference detector (32) for monitoring the intensity of the unattenuated light beam and a detector for detecting the intensity of light transmitted through the second mirror after a single pass through the cell. The light source is operatively connected to a heat control assembly having a heat sink and the gas sample is passed said heat sink to augment temperature control of the light source.

4. 发明授权

EP1647820B1 Method and device for detecting gases by absorption spectroscopy 有权
标题翻译：通过吸收光谱法的方法和装置用于气体检测
公开(公告)号：EP1647820B1
公开(公告)日：2006-12-20
申请号：EP06000797.8
申请日：2002-09-06
申请人： TDW DELAWARE, INC.
发明人： Bounaix, Fabrice Marcel S
IPC分类号： G01N21/35 , G01J3/42 , G01N21/03 , G01N21/39
CPC分类号： G01N21/3504 , G01J3/42 , G01J2003/423 , G01N21/031 , G01N21/39 , G01N2021/0307 , G01N2021/052 , G01N2021/399 , G01N2201/0612 , G01N2201/062

5. 发明公开

EP1647820A2 Method and device for detecting gases by absorption spectroscopy 有权
标题翻译：吸收光谱检测气体的方法和装置
公开(公告)号：EP1647820A2
公开(公告)日：2006-04-19
申请号：EP06000797.8
申请日：2002-09-06
申请人： TDW DELAWARE, INC.
发明人： Bounaix, Fabrice Marcel S
IPC分类号： G01N21/35 , G01J3/42 , G01N21/03 , G01N21/39
CPC分类号： G01N21/3504 , G01J3/42 , G01J2003/423 , G01N21/031 , G01N21/39 , G01N2021/0307 , G01N2021/052 , G01N2021/399 , G01N2201/0612 , G01N2201/062
摘要： A method and device for measuring a concentration of a preselected gas in a gas sample are disclosed. The device comprises a Herriott type multiplass cell (10) having a center axle (74) and a housing (80A, 80B) surrounding and spaced from the axle t provide a tubular sample cavity (84). The gas ample is pumped through the sample cavity via apertures (154, 156) provided in opposed ends of the axle. A first mirror (44) nd a second mirror (46) are supported at opposed ends of the axle. A light source e.g a laser or LED, is provided for emitting a light beam into the sample cavity via an entry aperture (30) in the first mirror, the light beam having a wave length at which the preselected gas strongly absorbs. The beam is reflected between the mirrors for a number of times before exiting the cell via an exit aperture (48) in the second mirror and impinging on a detector (52). The device further comprises a reference detector (32) for monitoring the intensity of the unattenuated light beam and a detector for detecting the intensity of light transmitted through the second mirror after a single pass through the cell. The light source is operatively connected to a heat control assembly having a heat sink and the gas sample is passed said heat sink to augment temperature control of the light source.
摘要翻译：公开了一种用于测量气体样品中的预选气体浓度的方法和装置。该装置包括具有中心轴（74）和围绕轴t并与轴间隔开的壳体（80A，80B）的Herriott型多活细胞（10），提供管状样品腔（84）。充气气体通过设置在轴的相对端中的孔（154,156）泵送通过样品腔。第一反射镜（44）和第二反射镜（46）在轴的相对端处被支撑。提供光源，例如激光器或LED，用于通过第一反射镜中的入射孔（30）将光束发射到样品腔中，该光束具有预选气体强烈吸收的波长。该光束在反射镜之间反射多次，然后经由第二反射镜中的出射孔（48）离开单元并撞击到检测器（52）上。该设备还包括用于监测未衰减光束的强度的参考检测器（32）和用于在单次通过单元之后检测透过第二反射镜的光的强度的检测器。光源可操作地连接到具有散热器的热控制组件，并且气体样品通过所述散热器以增强光源的温度控制。

6. 发明公开

EP1535047A1 METHOD AND DEVICE FOR DETECTING GASES BY ABSORPTION SPECTROSCOPY 有权
标题翻译：法气体通过吸收谱检测
公开(公告)号：EP1535047A1
公开(公告)日：2005-06-01
申请号：EP02778230.9
申请日：2002-09-06
申请人： TDW DELAWARE, INC.
发明人： BOUNAIX, Fabrice, Marcel, S.
IPC分类号： G01N21/35 , G01J3/42 , G01N21/03 , G01N21/39
CPC分类号： G01N21/3504 , G01J3/42 , G01J2003/423 , G01N21/031 , G01N21/39 , G01N2021/0307 , G01N2021/052 , G01N2021/399 , G01N2201/0612 , G01N2201/062
摘要： A method and device for measuring a concentration of a preselected gas in a gas sample are disclosed. The device comprises a Herriott type multipass cell (10) having a center axle (74) and a housing (80A, 80B) surrounding and spaced from the axle to provide a tubular sample cavity (84). The gas sample is pumped through the sample cavity via apertures (154, 156) provided in opposed ends of the axle. A first mirror (44) and a second mirror (46) are supported at opposed ends of the axle. A light source, e.g. a laser or LED, is provided for emitting a light beam into the sample cavity via an entry aperture (30) in the first mirror, the light beam having a wave length at which the preselected gas strongly absorbs. The beam is reflected between the mirrors for a number of times before exiting the cell via an exit aperture (48) in the second mirror and impinging on a detector (52). The device further comprises a reference detector (32) for monitoring the intensity of the unattenuated light beam and a detector for detecting the intensity of light transmitted through the second mirror after a single pass through the cell. The light source is operatively connected to a heat control assembly having a heat sink and the gas sample is passed said heat sink to augment temperature control of the light source.

7. 发明公开

EP3401666A1 GASMESSSYSTEM 审中-公开
公开(公告)号：EP3401666A1
公开(公告)日：2018-11-14
申请号：EP17170667.4
申请日：2017-05-11
申请人： Mettler-Toledo GmbH
发明人： Venturini, Francesca , Bergström, Pär , Hertel, Martin
IPC分类号： G01N21/25 , G01J3/02 , G01J3/42 , G01N21/39
CPC分类号： G01N21/031 , G01J3/02 , G01J3/0208 , G01J3/42 , G01J2003/423 , G01N21/3504 , G01N21/39 , G01N2021/399 , G01N2201/0634 , G01N2201/0638
摘要： Gasmesssystem, umfassend eine kohärente Lichtquelle (1, 201, 301, 401), welche einen Lichtstrahl aussendet; einen Detektor (8, 208, 308, 408); einen Strahlengang (2, 202, 302), der zwischen der Lichtquelle (1, 201, 301, 401) und dem Detektor (8, 208, 308, 408), ausgebildet ist; und eine Gas-Zelle (4, 204, 304, 404), welche im Strahlengang zwischen der Lichtquelle (1, 201, 301, 401) und dem Detektor (8, 208, 308, 408) angeordnet ist, so dass der Detektor (8, 208, 308, 408) das durch die Gas-Zelle (4, 204, 304, 404) transmittierte Licht empfängt; wobei die Gas-Zelle (4, 204, 304, 404) eine poröse Keramik (11, 211, 311, 411) umfasst; und wobei die Gas-Zelle (4, 204, 304, 404) eine optische Weglänge aufweist, welche ein Vielfaches der tatsächlichen Schichtdicke der Gas-Zelle (4, 204, 304, 404) ist; dadurch gekennzeichnet, dass ferner ein optisches Element (3, 203, 303, 403) im Strahlengang (2, 202, 302) zwischen der Lichtquelle (1, 201, 301, 401) und der Gas-Zelle (4, 204, 304, 404) angeordnet ist; dass der von der Lichtquelle (1, 201, 301, 401) ausgesandte Lichtstrahl beim Eintritt in die Gas-Zelle (4, 204, 304, 404) aufgeweitet und unfokussiert ist.

8. 发明授权

EP1616207B1 METHOD AND APPARATUS FOR THE MONITORING AND CONTROL OF COMBUSTION 有权转让
标题翻译：用于监测和控制燃烧的方法和设备
公开(公告)号：EP1616207B1
公开(公告)日：2018-02-28
申请号：EP04749622.9
申请日：2004-03-31
申请人： Zolo Technologies, Inc.
发明人： SAPPEY, Andrew, D. , HOWELL, James , HOFVANDER, Henrik , MASTERSON, B., P.
IPC分类号： G01N21/35 , F23N5/00
CPC分类号： G01J3/36 , G01J3/02 , G01J3/0202 , G01J3/0208 , G01J3/0218 , G01J3/0237 , G01J3/024 , G01J3/0289 , G01J3/0297 , G01J3/108 , G01J3/1809 , G01J5/601 , G01J2003/104 , G01J2003/423 , G01N21/359 , G01N21/39 , G01N2021/399 , G02B6/14
摘要： A sensing apparatus consisting of more than one diode laser having select lasing frequencies, a multiplexer optically coupled to the outputs of the diode lasers with the multiplexer being further optically coupled to a pitch side optical fiber. Multiplexed laser light is transmitted through the pitch side optical fiber to a pitch optic operatively associated with a process chamber which may be a combustion chamber or the boiler of a coal or gas fired power plant. The pitch optic is oriented to project multiplexed laser output through the process chamber. Also operatively oriented with the process chamber is a catch optic in optical communication with the pitch optic to receive the multiplexed laser output projected through the process chamber. The catch optic is optically coupled to an optical fiber which transmits the multiplexed laser output to a demultiplexer. The demultiplexer demultiplexes the laser light and optically couples the select lasing frequencies of light to a detector with the detector being sensitive to one of the select lasing frequencies.

9. 发明公开

EP3163292A1 LASERSPEKTROMETER UND VERFAHREN ZUM BETRIEB EINES LASERSPEKTROMETERS 有权转让
标题翻译：激光光谱仪和运行方法的激光光谱仪
公开(公告)号：EP3163292A1
公开(公告)日：2017-05-03
申请号：EP16195651.1
申请日：2016-10-26
申请人： ABB Schweiz AG
发明人： Angelosante, Daniele , Maas, Deran , Merbold, Hannes , Brändle, Hubert
IPC分类号： G01N21/39 , G01J3/433 , G01N21/27
CPC分类号： G01N21/39 , G01J3/027 , G01J3/42 , G01J2003/2866 , G01J2003/423 , G01N21/274
摘要： Die Erfindung betrifft ein Verfahren zur Kalibrierung eines Laserspektrometers (1), wobei Laserstrahlung (3) mit zeitlich wechselnder zentraler Wellenlänge (14) erzeugt wird, entlang eines, durch mindestens zwei Oberflächen (9, 10) begrenzten, optischen Pfades (8) durch ein zu untersuchendes Medium (5) gelenkt wird und dabei von dem Medium (5) teilweise transmittiert wird, und eine mit der Intensität der transmittierten Laserstrahlung korrelierende Größe (16) aufgezeichnet wird, und ein Spektrum (19) der Größe (16) gebildet wird, und das Spektrum (19) zur Ermittlung mindestens einer Stoffeigenschaft des Mediums (5) ausgewertet wird, wobei die Laserstrahlung (3) an den mindestens zwei Oberflächen (9, 10) teilweise senkrecht reflektiert und teilweise transmittiert wird, und dass mindestens ein Abstand (15) der mindestens zwei Oberflächen (9, 10) entlang des optischen Pfades (8) durch Auswertung der aufgezeichneten Größe (16) ermittelt wird. Ebenfalls betrifft die Erfindung ein entsprechendes Laserspektrometer (1).

10. 发明公开

EP3066453A2 REDUCED VOLUME SPECTROSCOPIC SAMPLE CELL 有权转让
标题翻译：具有体积减小光谱样品池
公开(公告)号：EP3066453A2
公开(公告)日：2016-09-14
申请号：EP14802567.9
申请日：2014-11-06
申请人： SpectraSensors, Inc.
发明人： SCOTT, Peter , FEITISCH, Alfred , DORN, Peter , CHAIMOWITZ, Adam, S. , HUANG, Hsu-hung , SCHREMPEL, Mthias , KELLER, Lutz
IPC分类号： G01N21/03 , G01N21/05
CPC分类号： G01N21/031 , G01J3/42 , G01J2003/423 , G01N21/01 , G01N21/0303 , G01N21/05 , G01N21/27 , G01N2021/0307 , G01N2201/06113
摘要： A sample cell can be designed to minimize excess gas volume. Described features can be advantageous in reducing an amount of gas required to flow through the sample cell during spectroscopic measurements, and in reducing a time (e.g. a total volume of gas) required to flush the cell between sampling events. In some examples, contours of the inners surfaces of the sample cell that contact the contained gas can be shaped, dimensioned, etc. such that a maximum clearance distance is provided between the inner surfaces at one or more locations. Systems, methods, and articles, etc. are described.

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