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    MEASURING WATER VAPOR IN HYDROCARBONS
    2.
    发明申请
    MEASURING WATER VAPOR IN HYDROCARBONS 审中-公开
    测量水中的水蒸汽

    公开(公告)号：WO2007120931A1

    公开(公告)日：2007-10-25

    申请号：PCT/US2007/009648

    申请日：2007-04-19

    Applicant: SPECTRASENSORS, INC. ,  ZHOU, Xin

    Inventor： ZHOU, Xin

    IPC: G01N21/35 ,  G01N21/39

    CPC classification number: G01N21/3554 ,  G01J3/02 ,  G01J3/027 ,  G01J3/42 ,  G01J3/4338 ,  G01N21/031 ,  G01N21/0332 ,  G01N21/3504 ,  G01N21/39 ,  G01N33/0036 ,  G01N33/22

    Abstract: Low concentrations of water vapor within a background of one or more hydrocarbon gases may be detected and quantified using a differential absorption spectrometer. A dehydrated sample of the gas is used as a background sample whose absorption spectrum allows elimination of absorption features not due to water vapor in the gas. Absorption spectra may recorded using tunable diode lasers as the light source, these lasers may have a wavelength bandwidth that is narrower than the water vapor absorption feature used for the differential absorption spectral analysis.

    Abstract translation: 可以使用差示吸收光谱仪检测和定量在一种或多种烃气体背景下的低浓度水蒸汽。 将脱气的气体样品用作背景样品，其吸收光谱允许消除不是由于气体中的水蒸气引起的吸收特征。 可以使用可调谐二极管激光器作为光源记录吸收光谱，这些激光器可以具有比用于差分吸收光谱分析的水蒸汽吸收特征窄的波长带宽。

    SCRUBBER FOR REACTIVE GASSES
    6.
    发明申请
    SCRUBBER FOR REACTIVE GASSES 审中-公开
    活性气体洗涤器

    公开(公告)号：WO2009029876A2

    公开(公告)日：2009-03-05

    申请号：PCT/US2008/074900

    申请日：2008-08-29

    Applicant: SPECTRASENSORS, INC. ,  BAUM, Marc, M. ,  MOSS, John ,  FEITISCH, Alfred ,  ZHOU, Xin ,  LIU, Xiang ,  KWAN, Alex

    Inventor： BAUM, Marc, M. ,  MOSS, John ,  FEITISCH, Alfred ,  ZHOU, Xin ,  LIU, Xiang ,  KWAN, Alex

    IPC: B01D53/52 ,  B01D53/58 ,  B01D53/68 ,  G01N30/02

    CPC classification number: B01D53/685 ,  B01D53/42 ,  B01D53/52 ,  B01D53/58 ,  B01D2251/512 ,  B01D2251/602 ,  B01D2251/606 ,  B01D2259/40

    Abstract: Scrubber media for reactive gases, that can include but are not necessarily limited to hydrogen chloride (HCl), hydrogen sulfide (H2S), hydrogen fluoride (HF), and ammonia (NH3), can include reactive particles, potentially as small as nano-scale, that can optionally be suspended on macro-scale carrier particles. Reactive gases can be converted to non-volatile compounds by being passed through a bed of such scrubber media. Such scrubber media can be used to remove reactive gases from gas mixtures. Potential applications include differential absorption spectroscopy, air pollutant emission controls, and the like. Methods of preparing scrubber media are also described.

    Abstract translation: 可包括但不一定限于氯化氢（HCl），硫化氢（H 2 S），氟化氢（HF）和氨（NH 3）的反应气体的洗涤器介质可包括反应性气体 可能与纳米尺度一样小的颗粒，其可以任选地悬浮在宏观尺度的载体颗粒上。 反应性气体可以通过穿过这种洗涤器介质床而转化为非挥发性化合物。 这种洗涤器介质可以用来从气体混合物中除去反应气体。 潜在的应用包括差示吸收光谱，空气污染物排放控制等。 还描述了制备洗涤器介质的方法。

    PRESSURE-INVARIANT TRACE GAS DETECTION
    7.
    发明申请
    PRESSURE-INVARIANT TRACE GAS DETECTION 审中-公开
    压力不确定跟踪气体检测

    公开(公告)号：WO2008112955A1

    公开(公告)日：2008-09-18

    申请号：PCT/US2008/056959

    申请日：2008-03-14

    Applicant: SPECTRASENSORS, INC. ,  XIANG, Liu ,  ZHOU, Xin ,  FEITISCH, Alfred ,  SANGER, Gregory, M.

    Inventor： XIANG, Liu ,  ZHOU, Xin ,  FEITISCH, Alfred ,  SANGER, Gregory, M.

    IPC: G01N21/39 ,  G01N21/35 ,  G01J3/433

    CPC classification number: G01N21/39 ,  G01J3/433 ,  G01N21/3504 ,  G01N2021/3513 ,  G01N2021/354 ,  G01N2021/399 ,  G01N2201/1218

    Abstract: An apparatus for detecting a concentration of a trace target gas in a sample gas comprises a light source (110), for example a tunable diode laser, for emitting light at a wavelength corresponding to an absorption line of the target gas and means (105) operatively connected to said light source for modulating the wavelength of the emitted light, a detector (125) positioned to detect the intensity of light emitted from the light source that has passed through the sample gas at a multiple of the modulation frequency of the light source, for example second harmonic detection, a pressure sensor (120) for detecting the pressure of the sample gas, and a control unit (135) coupled to the detector, the pressure sensor, and the light source, said control unit being arranged to adjust the modulation amplitude' of the light source based on the detected pressure.

    Abstract translation: 用于检测样品气体中的痕量目标气体的浓度的装置包括用于发射对应于目标气体的吸收线的波长的光的光源（110），例如可调谐二极管激光器，以及装置（105） 可操作地连接到所述光源以调制发射光的波长;检测器（125），定位成检测从光源的调制频率的多倍的已经通过样品气体的光源发射的光的强度 ，例如二次谐波检测，用于检测取样气体的压力的压力传感器（120），以及耦合到检测器，压力传感器和光源的控制单元（135），所述控制单元被布置成调节 基于检测到的压力的光源的调制幅度“。

    REACTIVE GAS DETECTION IN COMPLEX BACKGROUNDS
    8.
    发明申请
    REACTIVE GAS DETECTION IN COMPLEX BACKGROUNDS 审中-公开
    复杂背景下的反应性气体检测

    公开(公告)号：WO2008128114A1

    公开(公告)日：2008-10-23

    申请号：PCT/US2008/060128

    申请日：2008-04-11

    Applicant: SPECTRASENSORS, INC. ,  ZHOU, Xin ,  LIU, Xiang ,  FEITISCH, Alfred ,  SANGER, Gregory, M.

    Inventor： ZHOU, Xin ,  LIU, Xiang ,  FEITISCH, Alfred ,  SANGER, Gregory, M.

    IPC: G01N21/35

    CPC classification number: G01N21/3504 ,  G01N2021/3545 ,  G01N2021/399 ,  G01N2201/1215

    Abstract: A differential absorption spectrum for a reactive gas in a gas mixture can be generated for sample absorption data by subtracting background absorption data set from the sample absorption data. The background absorption data can be characteristic of absorption characteristics of the background composition in a laser light scan range that includes a target wavelength. The differential absorption spectrum can be converted to a measured concentration of the reactive gas using calibration data. A determination can be made whether the background composition has substantially changed relative to the background absorption data, and new background absorption data can be used if the background composition has substantially changed. Related systems, apparatus, methods, and/or articles are also described..

    Abstract translation: 可以通过从样品吸收数据中减去设置的背景吸收数据，为样品吸收数据产生气体混合物中的反应气体的差分吸收光谱。 背景吸收数据可以是包括目标波长的激光扫描范围中背景组合物的吸收特性的特征。 使用校准数据可以将差示吸收光谱转换为测量的反应气体浓度。 可以确定背景组合物是否相对于背景吸收数据基本上改变，并且如果背景组合物已经基本上改变，则可以使用新的背景吸收数据。 还描述了相关系统，装置，方法和/或物品。

    DETECTION OF MOISTURE IN REFRIGERANTS
    9.
    发明申请
    DETECTION OF MOISTURE IN REFRIGERANTS 审中-公开

    公开(公告)号：WO2008048994A3

    公开(公告)日：2008-04-24

    申请号：PCT/US2007/081617

    申请日：2007-10-17

    Applicant: SPECTRASENSORS, INC. ,  ZHOU, Xin ,  LIU, Xiang ,  SANGER, Gregory, M.

    Inventor： ZHOU, Xin ,  LIU, Xiang ,  SANGER, Gregory, M.

    IPC: G01N21/35 ,  G01N21/39

    Abstract: Moisture can be detected in a refrigerant background such as HFC (Hydroflurocarbon) HFC-134A and HFC-152A and exampled by HFC-23, HFC-32, HFC-143A, HFC-125, HFC-245FA, HFC-227EA, and the like. The system can include a light source operating at any one of several wavelengths within the water absorption bands at wavelengths such as 1.4, 1.9 and 2.7 μm and a detector that measures the transmitted light intensity through the HFC samples. In one variation, the light source is a tunable diode laser and the moisture level is determined by direct absorption and harmonic spectroscopy. Related techniques, apparatus, systems, and articles are also described.

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