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    Gas cell for absorption spectroscopy
    1.
    发明授权
    Gas cell for absorption spectroscopy 有权

    公开(公告)号：US10113955B2

    公开(公告)日：2018-10-30

    申请号：US15358781

    申请日：2016-11-22

    Applicant: Unisearch Associates Inc. ,  Unisearch Instruments Nanjing Inc.

    Inventor： Alak Chanda ,  Shimin Wu

    IPC: G01N21/00 ,  G01N21/3504 ,  G01N21/25 ,  G01N21/61 ,  G01N21/03 ,  G01J3/42 ,  G01N21/15

    Abstract: Gas cells and systems for absorption spectroscopy, and methods thereof. The method involves providing a channel with an inlet for receiving a gas sample and an outlet for releasing the gas sample from the gas cell; providing first and second end components with an optically transparent portion, each of the end components is configured to minimize a difference between a temperature of the optically transparent portions and an internal temperature of the channel; mounting the first end component the channel so that the optically transparent portion is positioned for receiving an incident beam into the channel; and mounting the second end component to the channel opposite from the first end component so that the optically transparent portion is positioned for permitting optical transmission into and out of the channel.

    Development of a compact raman spectrometer for detecting product interfaces in a flow path
    2.
    发明申请
    Development of a compact raman spectrometer for detecting product interfaces in a flow path 失效
    开发用于检测流路中的产品界面的紧凑型拉曼光谱仪

    公开(公告)号：US20020113961A1

    公开(公告)日：2002-08-22

    申请号：US10051305

    申请日：2002-01-22

    Applicant: Unisearch Associates Inc.

    Inventor： Heather A. Gamble ,  John C. Robbins ,  Gervase I. MacKay ,  Harold I. Schiff

    IPC: G01J003/44

    CPC classification number: G01J3/44 ,  G01N21/05 ,  G01N21/65 ,  G01N21/85

    Abstract: The present invention relates to a method and apparatus for detecting transitions between different gas or liquid products in a flow path and, more particularly, it relates to an apparatus and method utilizing Raman spectroscopy for detecting transitions between petroleum products. A Raman spectrometer is preferably to produce a monochromatic excitation beam at a wavelength of approximately 670 nm. The spectrometer consists of an entrance slit, a combined diffraction grating/focussing element, and an exit slit. The Raman signal, which exits the spectrometer exit slit is detected by a highly sensitive photomultiplier tube, and sent to a computer device for data acquisition and analysis. The proposed invention detects liquid or gas products in a flow path by detecting the changes in the composition of various petroleum products flowing through a gasoline pipeline, by means of exposing samples of various petroleum products to the Raman spectrometer system.

    Abstract translation: 本发明涉及一种用于检测流路中不同气体或液体产物之间的转变的方法和装置，更具体地说，涉及利用拉曼光谱法检测石油产品之间的转变的装置和方法。 拉曼光谱仪优选地产生波长约670nm的单色激发光束。 光谱仪由入射狭缝，组合衍射光栅/聚焦元件和出口狭缝组成。 通过高灵敏度的光电倍增管检测离开光谱仪出口狭缝的拉曼信号，并发送到计算机设备进行数据采集和分析。 本发明通过将各种石油产品的样品暴露于拉曼光谱仪系统，通过检测流经汽油管道的各种石油产品的组成变化来检测流路中的液体或气体产物。

    Gas Cell Assembly and Applications in Absorption Spectroscopy
    4.
    发明申请
    Gas Cell Assembly and Applications in Absorption Spectroscopy 有权
    气体电池组件及其在吸收光谱中的应用

    公开(公告)号：US20160069797A1

    公开(公告)日：2016-03-10

    申请号：US14737221

    申请日：2015-06-11

    Applicant: Unisearch Associates Inc. ,  Unisearch Instruments Nanjing Inc.

    Inventor： Alak Chanda ,  Shimin Wu

    IPC: G01N21/39

    CPC classification number: G01N21/031 ,  G01N21/0303 ,  G01N21/0332 ,  G01N21/05 ,  G01N21/31 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/0385 ,  G01N2021/0396 ,  G01N2021/052 ,  G01N2021/399 ,  G01N2201/022 ,  G01N2201/0612

    Abstract: A gas cell assembly and applications of the gas cell assembly in absorption spectroscopy. An example gas cell assembly includes a gas cell body with an inlet for receiving a gas sample from a gas source; a first and a second end portions that allow optical transmission into and out of the body, the second end portion being substantially opposite from the first end portion; and a channel providing a path for the gas sample and optical beam(s) between the first end portion and the second end portion. The gas cell assembly also includes reflective surfaces outside the body to receive versions of the optical beams from the body and to reflect each version of the incident beam towards the body. A detector, then, receives a last reflected beam and transmits a corresponding data signal to a processing unit for analyzing the gas sample based on the data signal.

    Abstract translation: 气体电池组件和气体电池组件在吸收光谱学中的应用。 示例性气体电池组件包括具有用于从气体源接收气体样品的入口的气室单元主体; 第一端部和第二端部，其允许光学传输进入和离开本体，第二端部与第一端部基本相对; 以及为第一端部和第二端部之间的气体样品和光束提供路径的通道。 气体单元组件还包括在主体外部的反射表面，以接收来自主体的光束的形式，并将入射光束的每种形式反射到身体。 然后，检测器接收最后的反射光束，并将相应的数据信号发送到处理单元，用于基于数据信号分析气体样本。

    Gas Cell Assembly and Applications in Absorption Spectroscopy
    6.
    发明申请
    Gas Cell Assembly and Applications in Absorption Spectroscopy 有权
    气体电池组件及其在吸收光谱中的应用

    公开(公告)号：US20170074779A1

    公开(公告)日：2017-03-16

    申请号：US15359235

    申请日：2016-11-22

    Applicant: Unisearch Associates Inc. ,  Unisearch Instruments Nanjing Inc.

    Inventor： Alak Chanda ,  Shimin Wu

    IPC: G01N21/03 ,  G01N21/31 ,  G01N21/39 ,  G01N21/05

    CPC classification number: G01N21/031 ,  G01N21/0303 ,  G01N21/0332 ,  G01N21/05 ,  G01N21/31 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/0385 ,  G01N2021/0396 ,  G01N2021/052 ,  G01N2021/399 ,  G01N2201/022 ,  G01N2201/0612

    Abstract: A gas cell assembly and applications of the gas cell assembly in absorption spectroscopy. An example gas cell assembly includes a gas cell body with an inlet for receiving a gas sample from a gas source; a first and a second end portions that allow optical transmission into and out of the body, the second end portion being substantially opposite from the first end portion; and a channel providing a path for the gas sample and optical beam(s) between the first end portion and the second end portion. The gas cell assembly also includes reflective surfaces outside the body to receive versions of the optical beams from the body and to reflect each version of the incident beam towards the body. A detector, then, receives a last reflected beam and transmits a corresponding data signal to a processing unit for analyzing the gas sample based on the data signal.

    Abstract translation: 气体电池组件和气体电池组件在吸收光谱学中的应用。 示例性气体电池组件包括具有用于从气体源接收气体样品的入口的气室单元主体; 第一端部和第二端部，其允许光学传输进入和离开本体，第二端部与第一端部基本相对; 以及为第一端部和第二端部之间的气体样品和光束提供路径的通道。 气体单元组件还包括在主体外部的反射表面，以接收来自主体的光束的形式，并将入射光束的每种形式反射到身体。 然后，检测器接收最后的反射光束，并将相应的数据信号发送到处理单元，用于基于数据信号分析气体样本。

    Gas cell assembly and applications in absorption spectroscopy
    7.
    发明授权
    Gas cell assembly and applications in absorption spectroscopy 有权
    气体电池组件和应用在吸收光谱学

    公开(公告)号：US09523638B2

    公开(公告)日：2016-12-20

    申请号：US14737221

    申请日：2015-06-11

    Applicant: Unisearch Associates Inc. ,  Unisearch Instruments Nanjing Inc.

    Inventor： Alak Chanda ,  Shimin Wu

    IPC: G01N21/39 ,  G01N21/3504 ,  G01N21/03

    CPC classification number: G01N21/031 ,  G01N21/0303 ,  G01N21/0332 ,  G01N21/05 ,  G01N21/31 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/0385 ,  G01N2021/0396 ,  G01N2021/052 ,  G01N2021/399 ,  G01N2201/022 ,  G01N2201/0612

    Abstract: A gas cell assembly and applications of the gas cell assembly in absorption spectroscopy. An example gas cell assembly includes a gas cell body with an inlet for receiving a gas sample from a gas source; a first and a second end portions that allow optical transmission into and out of the body, the second end portion being substantially opposite from the first end portion; and a channel providing a path for the gas sample and optical beam(s) between the first end portion and the second end portion. The gas cell assembly also includes reflective surfaces outside the body to receive versions of the optical beams from the body and to reflect each version of the incident beam towards the body. A detector, then, receives a last reflected beam and transmits a corresponding data signal to a processing unit for analyzing the gas sample based on the data signal.

    Abstract translation: 气体电池组件和气体电池组件在吸收光谱学中的应用。 示例性气体电池组件包括具有用于从气体源接收气体样品的入口的气室单元主体; 第一端部和第二端部，其允许光学传输进入和离开本体，第二端部与第一端部基本相对; 以及为第一端部和第二端部之间的气体样品和光束提供路径的通道。 气体单元组件还包括在主体外部的反射表面，以接收来自主体的光束的形式，并将入射光束的每种形式反射到身体。 然后，检测器接收最后的反射光束，并将相应的数据信号发送到处理单元，用于基于数据信号分析气体样本。

    DEVELOPMENT OF A COMPACT RAMAN SPECTROMETER FOR DETECTING PRODUCT INTERFACES IN A FLOW PATH
    8.
    发明专利
    DEVELOPMENT OF A COMPACT RAMAN SPECTROMETER FOR DETECTING PRODUCT INTERFACES IN A FLOW PATH 未知

    公开(公告)号：CA2368956A1

    公开(公告)日：2002-07-22

    申请号：CA2368956

    申请日：2002-01-22

    Applicant: UNISEARCH ASSOCIATES INC

    Inventor： MACKAY G I ,  SCHIFF H I ,  GAMBLE H A ,  ROBBINS J C

    IPC: G01J3/44 ,  G01N21/05 ,  G01N21/63 ,  G01N21/65

    Abstract: The present invention relates to a method and apparatus for detecting transitions between different gas or liquid products in a flow pat h and, more particularly, it relates to an apparatus and method utilizing Rama n spectroscopy for detecting transitions between petroleum products. A Raman spectrometer is preferably to produce a monochromatic excitation beam at a wavelength of approximately 670 nm. The spectrometer consists of an entrance slit, a combined diffraction grating/focussing element, and an exit slit. The Raman signal, which exits the spectrometer exit slit is detected b y a highly sensitive photomultiplier tube, and sent to a computer device for dat a acquisition and analysis. The proposed invention detects liquid or gas products in a flow path by detecting the changes in the composition of vario us petroleum products flowing through a gasoline pipeline, by means of exposing samples of various petroleum products to the Raman spectrometer system.

    Differential Optical Absorption Spectroscopy (DOAS) Apparatus, and Scanner Mechanism for Use in DOAS or Other Optical Apparatus
    9.
    发明专利
    Differential Optical Absorption Spectroscopy (DOAS) Apparatus, and Scanner Mechanism for Use in DOAS or Other Optical Apparatus 未知

    公开(公告)号：CA2143900A1

    公开(公告)日：1996-09-04

    申请号：CA2143900

    申请日：1995-03-03

    Applicant: UNISEARCH ASSOCIATES INC

    Inventor： ROBBINS JOHN ,  NADLER SHACHAR

    IPC: G01J3/02 ,  G01J3/04 ,  G01J3/28 ,  G01J3/32 ,  G01J3/42

    Abstract: An apparatus for use in Differential Optical Absorption Spectroscopy (DOAS) or in other optical apparatus provides a moveable or oscillating aperture. It has a sensor for detecting the position of the aperture, and a drive for oscillating the aperture; the drive and sensor can comprise coils forming a linear variable differential transformer, and the aperture can be spring biased to a neutral position. A control circuit is connected between the coil or other sensor and the drive coils, so that the motion of the aperture follows a desired profile. This enables significant parts of the apertures motion to be constrained to be linear. The aperture can be provided in a shuttle mounted on extension arms, whose ends are connected to resilient biassing means which serve both to support the shuttle and to bias it. More preferably, extension arms extend through pole pieces of magnets, which provide a magnetic field for drive coils. Another aspect of the invention provides a telescope apparatus, for a DOAS technique, including a baffle moveable between calibration and operational positions. This enables light from the light source to be transmitted either for measurement or for calibration allowing for changes in lamp output, etc.

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