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181.
公开(公告)号:EP2203242B1
公开(公告)日:2013-01-09
申请号:EP08799027.1
申请日:2008-08-29
Applicant: SpectraSensors, Inc.
Inventor: BAUM, Marc, M. , MOSS, John , FEITISCH, Alfred , ZHOU, Xin , LIU, Xiang , KWAN, Alex
CPC classification number: B01D53/685 , B01D53/42 , B01D53/52 , B01D53/58 , B01D2251/512 , B01D2251/602 , B01D2251/606 , B01D2259/40
Abstract: A method is disclosed which comprises maintaining a scrubber medium at a temperature in a range of -20°C to 85°C, the scrubber medium comprising nanoparticles of a reactive metal oxide material having first aerodynamic diameters of less than 250 nm that are adhered to carrier particles having second aerodynamic diameters in a range of 10 to 250 microns and that are inert relative to one or more background compounds, wherein a mass ratio of the reactive metal oxide to the carrier particles is in a range of 20% to 30%, and wherein the nanoparticles of the reactive metal oxide are adhered to the carrier particles by one or more of van der Waals and electrostatic forces. In a further step a gas mixture is contacted with the scrubber medium while the scrubber medium is maintained at the temperature, the gas mixture comprising a reactive compound and the one or more background compounds, the reactive compound comprising a gas-phase acid, the contacting causing the reactive compound to react with the reactive metal oxide material to convert the reactive compound and at least one metal oxide site on the nanoparticles to one or more metal-anion surface compounds. An apparatus, a composition and a refreshing method are also disclosed.
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182.
公开(公告)号:EP2179271A1
公开(公告)日:2010-04-28
申请号:EP08796724.6
申请日:2008-07-28
Applicant: SpectraSensors, Inc.
Inventor: FEITISCH, Alfred , LIU, Xiang , ZHOU, Xin , LANGHAM, Dale , COOK, Charles, F.
CPC classification number: G01N21/39 , G01N21/3504 , G01N21/75 , G01N2021/399 , Y10T436/20 , Y10T436/204998
Abstract: An energy content meter can spectroscopically quantify oxidation products after oxidation of a combustible mixture. The measured oxidation product concentrations or mole fractions can be converted to an energy content of the un-oxidized combustible mixture using a conversion factor that relates oxygen consumption during oxidation of the combustible mixture to the energy content of the combustible mixture.
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公开(公告)号:EP2140246A1
公开(公告)日:2010-01-06
申请号:EP08745688.5
申请日:2008-04-11
Applicant: SpectraSensors, Inc.
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..
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公开(公告)号:EP3892985A1
公开(公告)日:2021-10-13
申请号:EP21163478.7
申请日:2021-03-18
Applicant: SpectraSensors, Inc.
Inventor: Ludlum, Kevin , Winter, Marc , Scherrer, Benjamin , Liu, Xiang
Abstract: The present disclosure relates to a computer-implemented method for forecasting calibration spectra including a step of providing a machine learning model trained using historical calibration data corresponding to different gas species at different pressures. The computer-implemented method also includes steps of performing a calibration scan of one gas species at one pressure using an analyzer and generating calibration curves for the analyzer corresponding to one or multiple gas species at multiple pressures using the machine learning model and the calibration scan. Thereafter, a spectrum is obtained using the analyzer, and a concentration measurement is generated using the spectrum and at least one of the calibration curves.
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公开(公告)号:EP3700029A1
公开(公告)日:2020-08-26
申请号:EP20153407.0
申请日:2020-01-23
Applicant: SpectraSensors, Inc.
Inventor: Croglio, Jr., Nicolas J. , Scott, Peter , Beyer, Douglas H. , Ludlum, Kevin , Helbley, Keith , Peter, David
IPC: H01S5/022 , H01S5/068 , G01J3/02 , G01N21/39 , H01L23/00 , H02H9/00 , G02B7/02 , G02B27/62 , H01S5/024
Abstract: A light source module may include a base with a support feature protruding from a surface of the base and securing a light source to direct radiation away from the surface. A lens cells may be attached proximate to the surface, optionally by being secured within a sleeve that is attached at one end to the surface. A multi-conductor part may include electrical conductors and a base temperature sensor that contacts the base. The base temperature sensor may be electrically connected to at least one of the plurality of conductive elements and further connected to an optical ignition safety protection system configured to interrupt current to the light source if the base temperature sensor indicates that a temperature of the light source is outside of a safe range.
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186.
公开(公告)号:EP2126550B1
公开(公告)日:2019-08-14
申请号:EP08780378.9
申请日:2008-01-24
Applicant: SpectraSensors, Inc.
Inventor: LIU, Xiang , ZHOU, Xin , FEITISCH, Alfred , SANGER, Gregory, M.
IPC: G01N21/39 , G01N21/3504 , G01N21/27 , G01N21/31
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公开(公告)号:EP3344961A1
公开(公告)日:2018-07-11
申请号:EP16766421.8
申请日:2016-08-31
Applicant: SpectraSensors, Inc.
Inventor: COHEN, Joshua , ST. JOHN, Nathan , FEITISCH, Alfred
CPC classification number: G01N21/01 , G01J3/0286 , G01J3/42 , G01N21/27 , G01N2201/0231 , G01N2201/0636 , G02B7/008 , G02B7/028 , H01S3/0071 , H01S3/1317 , H01S5/0071 , H01S5/06804
Abstract: An optical head assembly for use in a spectrometer is provided that is configured to characterize one or more constituents within a sample gas. The assembly includes a thermoelectric cooler (TEC) having a cold side on one end and a hot side on an opposite end, a cold plate in thermal communication with the cold side of the TEC, a hot block in thermal communication with the hot side of the TEC, a light source in thermal communication with the cold plate such that a change in temperature of the TEC causes one or more properties of the light source (e.g., wavelength, etc.) to change, and an optical element in thermal communication with the cold plate positioned to collimate light emitted by the light source through the sample gas (such that properties of the optical element vary based on a change in temperature of the TEC).
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公开(公告)号:EP2140246B1
公开(公告)日:2016-08-03
申请号:EP08745688.5
申请日:2008-04-11
Applicant: SpectraSensors, Inc.
Inventor: ZHOU, Xin , LIU, Xiang , FEITISCH, Alfred , SANGER, Gregory, M.
IPC: G01N21/3504 , G01N21/39
CPC classification number: G01N21/3504 , G01N2021/3545 , G01N2021/399 , G01N2201/1215
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公开(公告)号:EP2203242A2
公开(公告)日:2010-07-07
申请号:EP08799027.1
申请日:2008-08-29
Applicant: SpectraSensors, Inc.
Inventor: BAUM, Marc, M. , MOSS, John , FEITISCH, Alfred , ZHOU, Xin , LIU, Xiang , KWAN, Alex
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.
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公开(公告)号:EP2147293A1
公开(公告)日:2010-01-27
申请号:EP08755505.8
申请日:2008-05-15
Applicant: SpectraSensors, Inc.
Inventor: CLINE, Richard, L. , LIU, Xiang , SANGER, Gregory, M. , SMITH, Charles, E. , ZHOU, Xin
CPC classification number: G01N21/3504 , G01J3/02 , G01J3/027 , G01J3/4338 , G01N21/39 , G01N21/85 , G01N29/024 , G01N33/225 , G01N2021/399 , G01N2021/8578 , G01N2291/02809 , G01N2291/02836 , G01N2291/02881
Abstract: Thermodynamic properties of a natural gas stream can be determined in real time utilizing modeling algorithms in conjunction with one or more sensors for quantifying physical and chemical properties of the natural gas. Related techniques, apparatus, systems, and articles are also described. A method and apparatus for determining the energy content of a gas stream in which spectroscopic measurements on carbon dioxide and hydrocarbons as well as a third measurement of temperature, pressure and sund velocity of the gas are input to a processor which uses an algorithm to calculate the energy contact.
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