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公开(公告)号：US20170153651A1
公开(公告)日：2017-06-01
申请号：US15363640
申请日：2016-11-29
Applicant: Axetris AG
Inventor： Stefan BÜRGI , Adrian DÄNZER , Christoph BÄCHLER
CPC classification number: G05D7/0635 , G01F1/40 , G01F1/6842 , G01F5/00 , G01F15/00
Abstract: A flow rate measuring unit, comprising a housing, which is composed of at least two housing parts that can be connected to one another and in which a flow passage extends, which branches off into a measuring channel branch and at least one bypass channel branch, wherein a substrate comprising a sensor system is disposed in the measuring channel branch. According to the invention, the flow passage includes a channel widening chamber in which an insert plate stack composed of at least two insert plates is disposed, which each include at least one plate-longitudinal recess extending in the longitudinal direction as the measuring channel branch and/or as the bypass channel branch. The insert plates are provided as insert parts for the channel widening chamber.
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公开(公告)号：US10175166B1
公开(公告)日：2019-01-08
申请号：US15928425
申请日：2018-03-22
Applicant: Axetris AG
Inventor： Andreas Wittmann , Sven Schlesinger , Torsten Platz
IPC: G01N21/39
Abstract: A method for operating an optical measuring system for measuring the concentration of a gas component in a measured gas, based on wavelength modulation spectroscopy, wherein a laser light source is operated in a current-modulated manner with a base current IDC and a modulation current IAC and a laser beam of the wavelength λ0 having a wavelength modulation amplitude ΔλAC is emitted, and the wavelength modulation amplitude ΔλAC of the laser light is kept constant by way of variable setting of the current modulation amplitude ΔIAC. The method provides for keeping a modulated power ΔPAC at an internal resistor RI of the laser light source constant at the operating point so as to stabilize the wavelength modulation amplitude ΔλAC.
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3.发明申请公开(公告)号：US20200103342A1
公开(公告)日：2020-04-02
申请号：US16149295
申请日：2018-10-02
Applicant: Axetris AG
Inventor： Andreas Wittmann , Sven Schlesinger , Torsten Platz
Abstract: A method for operating an optical measuring system including a wavelength-tunable temperature-stabilized laser light source for measuring the concentration of a target gas component in a measured gas, wherein an instantaneous base current IDC_ZG,act corresponding to a wavelength λZG of a target gas absorption line is set so that a wavelength distance ΔλDC defined during calibration between a target gas absorption line for a target gas component and a reference gas absorption line for a reference gas component is maintained. During operation, a relative temperature difference in the laser light source, defined in advance during calibration, between the operating points selected at the time of calibration of the reference gas, with a base current IDC_RG,cal, and the target gas component, with a base current IDC_ZG,cal, is maintained by determining the required instantaneous base current IDC_ZG,act for the target gas component, as a function of an instantaneous base current IDC_RG,act for the reference gas. The system includes a measuring system for carrying out the method.
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公开(公告)号：US09995607B2
公开(公告)日：2018-06-12
申请号：US15363498
申请日：2016-11-29
Applicant: Axetris AG
Inventor： Stefan Bürgi , Adrian Dänzer , Christoph Bächler
CPC classification number: G01F1/42 , G01F1/6842 , G01F5/00 , G01F5/005
Abstract: A flow rate measuring unit, comprising a housing, which is composed of at least two housing parts that can be connected to one another and in which a flow passage extends, which branches off into a measuring channel branch and at least one bypass channel branch, wherein a substrate comprising a sensor system is disposed in the measuring channel branch. According to the invention, the flow passage includes a channel widening chamber in which an insert plate stack composed of at least two insert plates is disposed, which each include at least one plate-longitudinal recess extending in the longitudinal direction as the measuring channel branch and/or as the bypass channel branch. The insert plates are provided as insert parts for the channel widening chamber.
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公开(公告)号：US20130112896A1
公开(公告)日：2013-05-09
申请号：US13670652
申请日：2012-11-07
Applicant: Axetris AG
Inventor： Olivier DUBOCHET , Stefan KREBS
IPC: H05B33/04
CPC classification number: G01J3/02 , G01J3/108 , G01J3/42 , G01N21/3504 , G01N2201/0238 , H01K1/08 , H01K1/14 , H01K1/50 , H01K1/52 , H01K3/22 , H01K3/26 , H01L2224/48091 , H01L2924/10253 , H01L2924/3011 , H01L2924/00014 , H01L2924/00
Abstract: An infrared radiation source for gas detection, with a thin layer infrared radiator that is arranged in the interior chamber of a protective housing that includes a support surface for the thin layer infrared radiator and an exit window for the infrared radiation arranged at a distance opposite the support surface. The thin layer infrared radiator includes a platinum layer and at least one structurally defined de-gassing canal with an entry opening and an exit opening that leads from the interior chamber of the protective housing to the outside. For non-critical applications, the de-gassing canal is not sealed. For critical applications, it may be sealed by a sealing membrane that is water impermeable, water vapor permeable and open for gas diffusion, with the sealing membrane preferably being semi-permeable.
Abstract translation: 一种用于气体检测的红外辐射源，其具有布置在保护壳体的内部腔室中的薄层红外辐射器，该保护壳体包括用于薄层红外线辐射器的支撑表面和用于红外辐射的出射窗， 支撑面。 薄层红外辐射器包括铂层和至少一个结构上限定的除气槽，其具有从保护壳体的内部腔室引导到外部的入口和出口。 对于非关键应用，除气管没有密封。 对于关键应用，其可以通过不透水，水蒸汽可渗透并且用于气体扩散的密封膜被密封，密封膜优选是半透性的。
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Patent Agency Ranking
公开(公告)号：US20210215519A1
公开(公告)日：2021-07-15
申请号：US17147863
申请日：2021-01-13
Applicant: Axetris AG
Inventor： Paolo Antonio Losio , Rolf Gebhardt
Abstract: A gas flow measuring circuit includes at least one reference resistor and at least one variable resistor that varies in accordance with the characteristics of the flow of a gas and means for determination of the difference between the reference resistor and variable resistor, with at least one current loop arrangement including first current source means coupled in series with said reference resistor and second current source means coupled in series with said variable resistor wherein both resistors are connected to ground for providing an ideally constant current through the respective resistor to produce first voltages across the reference resistor and second voltages across the variable resistor, and voltage measuring means for measuring the voltage difference between said reference resistor and said variable resistor to produce a characteristic voltage difference representative of the characteristics of the gas.
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公开(公告)号：US10042368B2
公开(公告)日：2018-08-07
申请号：US15363640
申请日：2016-11-29
Applicant: Axetris AG
Inventor： Stefan Bürgi , Adrian Dänzer , Christoph Bächler
CPC classification number: G05D7/0635 , G01F1/40 , G01F1/6842 , G01F5/00 , G01F15/00
Abstract: A flow rate measuring unit, comprising a housing, which is composed of at least two housing parts that can be connected to one another and in which a flow passage extends, which branches off into a measuring channel branch and at least one bypass channel branch, wherein a substrate comprising a sensor system is disposed in the measuring channel branch. According to the invention, the flow passage includes a channel widening chamber in which an insert plate stack composed of at least two insert plates is disposed, which each include at least one plate-longitudinal recess extending in the longitudinal direction as the measuring channel branch and/or as the bypass channel branch. The insert plates are provided as insert parts for the channel widening chamber.
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公开(公告)号：US09377359B1
公开(公告)日：2016-06-28
申请号：US14613482
申请日：2015-02-04
Applicant: Axetris AG
Inventor： Andreas Wittmann , Marc-Oliver Zufferey , Urs Boegli , Kai Hassler
CPC classification number: G01J3/45 , G01J3/0262 , G01J3/2803 , G01J3/4338 , G01J3/4412 , G01N21/3504 , G01N21/39
Abstract: An optical measuring system and a method for gas detection, the optical measuring system including a light emitter and at least one light detector arranged in at least one housing, wherein the light emitter emits a modulated main light beam with a mean wave length λ0 with a modulation span Δλ. At least one opto-mechanical component, e.g. a housing window including optically effective boundary surfaces, is arranged between the light emitter and the light detector and causes scatter light beams which interfere with the main light beam so that self-mixing occurs and/or etalons are caused. According to the invention the at least one opto-mechanical component is arranged relative to the light emitter and/or the light detector at an optimized distance L which is a function of the wave length λ0 and the modulation span Δλ of the main light beam.
Abstract translation: 一种光学测量系统和用于气体检测的方法，所述光学测量系统包括光发射器和布置在至少一个壳体中的至少一个光检测器，其中所述发光器发射具有平均波长λ0的调制主光束，其具有 调制范围＆Dgr;λ。 至少一个光机械部件，例如。 在光发射器和光检测器之间设置包括光学有效边界面的外壳窗，并引起与主光束干涉的散射光束，从而引起自发混合和/或标准具。 根据本发明，至少一个光机械部件相对于光发射器和/或光检测器以优化距离L布置，该距离L是主光的波长λ0和调制范围＆Dgr;λ的函数 光束。
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公开(公告)号：US11448539B2
公开(公告)日：2022-09-20
申请号：US17147863
申请日：2021-01-13
Applicant: Axetris AG
Inventor： Paolo Antonio Losio , Rolf Gebhardt
Abstract: A gas flow measuring circuit includes at least one reference resistor and at least one variable resistor that varies in accordance with the characteristics of the flow of a gas and means for determination of the difference between the reference resistor and variable resistor, with at least one current loop arrangement including first current source means coupled in series with said reference resistor and second current source means coupled in series with said variable resistor wherein both resistors are connected to ground for providing an ideally constant current through the respective resistor to produce first voltages across the reference resistor and second voltages across the variable resistor, and voltage measuring means for measuring the voltage difference between said reference resistor and said variable resistor to produce a characteristic voltage difference representative of the characteristics of the gas.
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公开(公告)号：US10739257B2
公开(公告)日：2020-08-11
申请号：US16149295
申请日：2018-10-02
Applicant: Axetris AG
Inventor： Andreas Wittmann , Sven Schlesinger , Torsten Platz
Abstract: A method for operating an optical measuring system including a wavelength-tunable temperature-stabilized laser light source for measuring the concentration of a target gas in a measured gas, wherein an instantaneous base current IDC_ZG,act corresponding to a wavelength λZG of a target gas absorption line is set so that a wavelength distance ΔλDC defined during calibration between a target gas absorption line for a target gas and a reference gas absorption line for a reference gas is maintained. During operation, a temperature difference in the laser light source, defined in advance during calibration, between the operating points selected at the time of calibration of the reference gas, with a base current IDC_RG,cal, and the target gas, with a base current IDC_ZG,cal, is maintained by determining the required instantaneous base current IDC_ZG,act for the target gas, as a function of an instantaneous base current IDC_RG,act for the reference gas.
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