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    SCANNING IR SENSOR FOR GAS SAFETY AND EMISSIONS MONITORING
    41.
    发明申请
    SCANNING IR SENSOR FOR GAS SAFETY AND EMISSIONS MONITORING 审中-公开

    公开(公告)号：US20180266944A1

    公开(公告)日：2018-09-20

    申请号：US15923794

    申请日：2018-03-16

    申请人： MultiSensor Scientific, Inc.

    发明人： Allen M. Waxman ,  Jason M. Bylsma ,  Allan Vaitses

    IPC分类号： G01N21/3518 ,  G01F1/76

    CPC分类号： G01N21/3518 ,  G01F1/76 ,  G01M3/38 ,  G01N2021/3513

    摘要： Apparatus and methods for rapidly detecting, localizing, imaging, and quantifying leaks of natural gas and other hydrocarbon and greenhouse gases. Scanning sensors, scan patterns, and data processing algorithms enable monitoring a site to rapidly detect, localize, image, and quantify amounts and rates of hydrocarbon leaks. Multispectral short-wave infrared detectors sense non-thermal infrared radiation from natural solar or artificial illumination sources by differential absorption spectroscopy. A multispectral sensor is scanned to envelop an area of interest, detect the presence and location of a leak, and raster scan the area around the leak to create an image of the leak. The resulting absorption image related to differential spectral optical depth is color mapped to render the degree of gas absorption across the scene. Analysis of this optical depth image, with factors including known inline pressures and/or surface wind speed measurements, enable estimation of the leak rate, i.e., emission mass flux of gas.

    GAS DETECTION APPARATUS AND METHOD
    43.
    发明申请
    GAS DETECTION APPARATUS AND METHOD 审中-公开

    公开(公告)号：US20180217056A1

    公开(公告)日：2018-08-02

    申请号：US15747516

    申请日：2016-07-27

    申请人： Gas Measurement Instruments Limited

    发明人： Crawford MASSIE ,  Fraser MATHIESON ,  Andrew GLENDINNING

    IPC分类号： G01N21/3518 ,  G01N21/31

    CPC分类号： G01N21/3518 ,  G01J1/1626 ,  G01J2001/161 ,  G01N21/314 ,  G01N21/3504 ,  G01N33/0059 ,  G01N2021/3166 ,  G01N2201/1215

    摘要： A detector has a sensor responsive to a first wavelength, a sensor responsive to a second wavelength, and a sensor for collecting reference readings. A gas sample is analysed to obtain readings corresponding to the first wavelength, the second wavelength and a reference. A first absorption figure is calculated using the first reading and the reference reading, and a second absorption figure using the second reading and the reference reading. A lineariser function is applied to the first and second absorption figures to calculate first and second concentration figures. The sensor for each wavelength is calibrated for detecting the first gas such that the data collected at each wavelength gives the same reading when only the first gas is present. The ratio of the first concentration figure to the second concentration figure is used to identify whether only the first gas is present.

    REMOTE SENSING OF NATURAL GAS LEAKS
    45.
    发明申请
    REMOTE SENSING OF NATURAL GAS LEAKS 审中-公开

    公开(公告)号：US20170370797A1

    公开(公告)日：2017-12-28

    申请号：US15630882

    申请日：2017-06-22

    申请人： Synodon Inc.

    发明人： T. Boyd Tolton

    IPC分类号： G01M3/38 ,  G01N21/3518 ,  G01N21/3504

    CPC分类号： G01M3/38 ,  G01N21/3518 ,  G01N2021/1793 ,  G01N2021/3509 ,  G01N2021/3531 ,  G01N2201/0214 ,  G01N2201/0216 ,  G01N2201/068

    摘要： A method of detecting natural gas releases that includes the step of traversing a target area with a gas-filter correlation radiometer having a field of view oriented towards the target area. The gas-filter correlation radiometer receives reflected radiation in a passband from the target area and produces gas-filter correlation radiometer signals from the received reflected radiation. A surface reflectivity spectral profile of the target area is determined. The presence of methane in the target area is then determined based upon the received reflected radiation and the surface reflectivity spectral profile of the target area.

    SYSTEMS AND METHODS FOR PRESSURE DIFFERENTIAL MOLECULAR SPECTROSCOPY OF COMPRESSIBLE FLUIDS
    47.
    发明申请
    SYSTEMS AND METHODS FOR PRESSURE DIFFERENTIAL MOLECULAR SPECTROSCOPY OF COMPRESSIBLE FLUIDS 有权
    可压缩流体的压力差分分析系统和方法

    公开(公告)号：US20170030829A1

    公开(公告)日：2017-02-02

    申请号：US15290684

    申请日：2016-10-11

    申请人： MKS Instruments, Inc. ,  Pason Systems Corp.

    发明人： Vidi A. Saptari

    IPC分类号： G01N21/3518 ,  G01N33/22

    CPC分类号： G01N21/3518 ,  G01N21/05 ,  G01N21/31 ,  G01N21/3504 ,  G01N21/359 ,  G01N33/225 ,  G01N2021/3536 ,  G01N2021/3595 ,  G01N2201/023

    摘要： Described herein is a spectroscopic system and method for measuring and monitoring the chemical composition and/or impurity content of a sample or sample stream using absorption light spectroscopy. Specifically, in certain embodiments, this invention relates to the use of sample pressure variation to alter the magnitude of the absorption spectrum (e.g., wavelength-dependent signal) received for the sample, thereby obviating the need for a reference or ‘zero’ sample. Rather than use a reference or ‘zero’ sample, embodiments described herein obtain a spectrum/signal from a sample-containing cell at both a first pressure and a second (different) pressure.

    摘要翻译： 本文描述的是使用吸收光谱测量和监测样品或样品流的化学成分和/或杂质含量的光谱系统和方法。 具体来说，在某些实施方案中，本发明涉及使用样品压力变化来改变为样品接收的吸收光谱的幅度（例如，依赖于波长的信号），从而避免了对参考或“零”样品的需要。 不是使用参考或“零”样本，本文所述的实施例在第一压力和第二（不同）压力下都从含样品的电池获得光谱/信号。

    Dynamic reconstruction of a calibration state of an absorption spectrometer
    48.
    发明授权
    Dynamic reconstruction of a calibration state of an absorption spectrometer 有权
    吸收光谱仪的校准状态的动态重建

    公开(公告)号：US09360415B2

    公开(公告)日：2016-06-07

    申请号：US14263942

    申请日：2014-04-28

    申请人： SpectraSensors, Inc.

    发明人： Xiang Liu ,  John Lewison ,  Wenhai Ji ,  Alfred Feitisch

    IPC分类号： G01N21/00 ,  G01N21/27 ,  G01N21/39 ,  G01N21/3504 ,  G01J3/28 ,  G01J3/42 ,  G01N21/03 ,  G01N21/31 ,  G01N21/3518

    CPC分类号： G01N21/274 ,  G01J3/28 ,  G01J3/42 ,  G01N21/031 ,  G01N21/31 ,  G01N21/3504 ,  G01N21/3518 ,  G01N21/39 ,  G01N2021/399

    摘要： A reference harmonic absorption curve of a laser absorption spectrometer can have a reference curve shape derived from a reference signal generated by the detector in response to light passing from the laser light source through a reference gas or gas mixture. The reference gas or gas mixture can include one or more of a target analyte and a background gas expected to be present during analysis of the target analyte. A test harmonic absorption curve having a test curve shape is compared with the reference harmonic absorption curve to detect a difference between the test curve shape and the reference curve shape. Operating and/or analytical parameters of the laser absorption spectrometer are adjusted to correct the test curve shape to reduce the difference between the test curve shape and the reference curve shape.

    摘要翻译： 激光吸收光谱仪的参考谐波吸收曲线可以具有根据由检测器响应于从激光源通过参考气体或气体混合物的光而产生的参考信号导出的参考曲线形状。 参考气体或气体混合物可以包括目标分析物和预期在目标分析物的分析期间存在的背景气体中的一种或多种。 将具有测试曲线形状的测试谐波吸收曲线与参考谐波吸收曲线进行比较，以检测测试曲线形状与参考曲线形状之间的差异。 调整激光吸收光谱仪的操作和/或分析参数以校正测试曲线形状，以减小测试曲线形状与参考曲线形状之间的差异。

    Gas analyzer and gas-analyzing mechanism
    49.
    发明授权
    Gas analyzer and gas-analyzing mechanism 失效
    气体分析仪和气体分析机构

    公开(公告)号：US5572032A

    公开(公告)日：1996-11-05

    申请号：US342247

    申请日：1994-11-18

    申请人： Masahiko Fujiwara ,  Shigeyuki Akiyama ,  Masahiko Ishida ,  Satoshi Inoue

    发明人： Masahiko Fujiwara ,  Shigeyuki Akiyama ,  Masahiko Ishida ,  Satoshi Inoue

    IPC分类号： G01N21/27 ,  G01N21/35 ,  G01N21/3518 ,  G01N21/61 ,  G01J5/08

    CPC分类号： G01N21/276 ,  G01N21/3504 ,  G01N33/0026

    摘要： A gas analyzer capable of simultaneously detecting two or more components in a single-cell mode and a gas-analyzing mechanism suitable for simultaneously detecting two or more components in a cross-flow modulation single-cell mode are provided. A gas analyzer unit includes two measuring cells, light sources provided on one end side of each of the measuring cells, gas filter cells with interferential gaseous components hindering a detection of components to be measured enclosed provided on the other end side of each of the measuring cells, beam splitters included in two gas filter cells, first- and fourth and second- and third detectors provided on the side of transmitting position and the side of reflecting position, respectively, of each of the beam splitters and a sampling device connected with a rotary valve.

    摘要翻译： 提供能够同时检测单电池模式中的两个或更多个组件的气体分析器和适用于以交叉流调制单电池模式同时检测两个或更多个组件的气体分析机构。 气体分析器单元包括两个测量单元，设置在每个测量单元的一端侧的光源，具有干涉气体成分的气体过滤器单元阻止检测每个测量单元的另一端侧封闭的被测元件的检测 包括在两个气体过滤器单元中的单元，分束器，分别设置在每个分束器的透射位置和反射位置侧的第一和第四和第二和第三检测器以及与 旋转阀。

    Gas analyzer of the fluid modulation type
    50.
    发明授权
    Gas analyzer of the fluid modulation type 失效
    气体分析仪的流体调制型

    公开(公告)号：US4393304A

    公开(公告)日：1983-07-12

    申请号：US235739

    申请日：1981-02-18

    申请人： Kozo Ishida ,  Hiroji Kohsaka

    发明人： Kozo Ishida ,  Hiroji Kohsaka

    IPC分类号： G01N1/00 ,  G01N1/24 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3518 ,  G01N21/61 ,  G01N33/00 ,  G01J1/00

    CPC分类号： G01N33/0026 ,  G01N21/3518 ,  G01N33/0006 ,  G01N2001/244

    摘要： A gas analyzer of the fluid modulation type includes at least one cell, structure for alternately introducing a sample gas to be analyzed and a reference gas into the cell, a detector for analyzing a property of the sample gas, and an arrangement for alternately discharging the sample gas and the reference gas from the cell. A critical flow device is located in the discharging arrangement. A pump is located in the discharging arrangement and has a capacity for operating the critical flow device under conditions of critical gas flow, thereby maintaining the gas passing through the critical flow device and the cell at a constant flow rate.

    摘要翻译： 流体调制型的气体分析装置包括至少一个电池，用于将要分析的样品气体和参考气体交替地引入电池的结构，用于分析样品气体的性质的检测器，以及用于交替地将 样品气体和来自电池的参考气体。 临界流动装置位于排放装置中。 泵位于排放装置中，并且具有在临界气体流动的条件下操作临界流动装置的能力，从而保持气体以恒定流速通过临界流动装置和电池。