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公开(公告)号：US09395246B2
公开(公告)日：2016-07-19
申请号：US13955479
申请日：2013-07-31
申请人： ALPHASENSE LIMITED
CPC分类号： G01J3/42 , G01N21/05 , G01N21/314 , G01N21/33
摘要： A gas analyzer and a corresponding method is provided to measure the concentration of formaldehyde within enclosed environments such as within buildings comprising an ultraviolet light source, a sample chamber, a detector. The detector measures the intensity of light received by photosensors within a measurement range of wavelengths, and at least one reference range of wavelengths. Advantageously, the concentration of formaldehyde is determined taking into account fluctuations in the intensity of light emitted by the light source, and in the presence of any interferents such as nitrogen dioxide.
摘要翻译： 提供了一种气体分析仪和相应的方法来测量封闭环境内的甲醛浓度，例如在包括紫外光源，样品室，检测器的建筑物内的甲醛浓度。 检测器测量光电传感器在波长的测量范围内和至少一个参考波长范围内接收的光的强度。 有利地，考虑到光源发射的光的强度和存在任何干扰物如二氧化氮的波动来确定甲醛的浓度。
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公开(公告)号：US20090038962A1
公开(公告)日：2009-02-12
申请号：US12182573
申请日：2008-07-30
CPC分类号： G01N27/404 , G01N33/0014
摘要： A fuel gas analyzer for measuring the concentration of oxygen in fuel gas, comprising an electrochemical oxygen sensor and water vapor removing means for reducing the relative humidity of received gas and/or nitrogen-containing-gas removing means for removing from received gas one or more gaseous species comprising nitrogen and oxygen which are either nitrogen dioxide, or formed from nitrogen dioxide in the presence of sufficient water vapor, which would otherwise lead to damage of the electrochemical oxygen sensor,
摘要翻译： 一种用于测量燃料气体中的氧气浓度的燃料气体分析器，包括电化学氧传感器和用于降低接收气体和/或含氮气体去除装置的相对湿度的水蒸汽去除装置，用于从接收的气体中去除一个或多个 包含氮和氧的气态物质是二氧化氮，或由二氧化氮在足够的水蒸汽存在下形成，否则会导致电化学氧传感器的损坏，
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公开(公告)号：US20070012957A1
公开(公告)日：2007-01-18
申请号：US11477811
申请日：2006-06-30
IPC分类号： H01L29/768
CPC分类号： G01N27/308 , C02F1/46109 , C02F2001/46142 , C25B11/035 , C25B11/0447 , Y10T29/49002 , Y10T29/49204 , Y10T29/49206 , Y10T29/49345
摘要： Disclosed is a gas permeable electrode comprising an electrocatalyst which is permeable to a reactant or reaction product, the electrocatalyst comprising particulate boron-doped diamond. There is also disclosed a method of making an electrocatalyst which is permeable to a reactant or reaction product, the method comprising the step of forming an electrocatalyst comprising particulate boron-doped diamond.
摘要翻译： 公开了一种透气电极，其包含可反应物或反应产物可渗透的电催化剂，所述电催化剂包括颗粒状硼掺杂金刚石。 还公开了制备对反应物或反应产物是可渗透的电催化剂的方法，该方法包括形成包含颗粒状硼掺杂金刚石的电催化剂的步骤。
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公开(公告)号：US20240295525A1
公开(公告)日：2024-09-05
申请号：US18588636
申请日：2024-02-27
申请人： ALPHASENSE LIMITED
发明人： Ronan BARON , Lee JONES , Richard SMITH , Richard DUDENEY
IPC分类号： G01N27/40 , G01N27/413
CPC分类号： G01N27/40 , G01N27/413
摘要： An electrochemical gas sensor comprising a housing containing a plurality of electrodes and a liquid electrolyte, the housing having a gas inlet, the sensor defining at least one port through the housing having a metal interface pin therein, the interface pin extending through the port from the exterior of the housing, being electrically connected to at least one of the plurality of electrodes in the interior of the housing, the sensor additionally comprising a seal located around the metal interface pin within the port, and compressed between a wall of the port and the metal interface pin thereby restricting egress of liquid electrolyte from the housing, wherein the seal comprises an annular seal which in its uncompressed form either presents a cross-section which is concave in a radially extending direction of the seal, or whose width is constant over an extended axial direction of the seal.
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公开(公告)号：US20140034840A1
公开(公告)日：2014-02-06
申请号：US13955479
申请日：2013-07-31
申请人： ALPHASENSE LIMITED
IPC分类号： G01J3/42
CPC分类号： G01J3/42 , G01N21/05 , G01N21/314 , G01N21/33
摘要： A gas analyser is provided to measure the concentration of formaldehyde within enclosed environments such as within buildings comprising an ultraviolet light source, a sample chamber, a detector. The detector measures the intensity of light received by photosensors within a measurement range of wavelengths, and at least one reference range of wavelengths. Advantageously, the concentration of formaldehyde is determined taking into account fluctuations in the intensity of light emitted by the light source, and in the presence of any interferents such as nitrogen dioxide.A method of measuring the concentration of formaldehyde in enclosed environments is also presented.
摘要翻译： 提供气体分析器以测量封闭环境中的甲醛浓度，例如在包括紫外光源，样品室，检测器的建筑物内的甲醛浓度。 检测器测量光电传感器在波长的测量范围内和至少一个参考波长范围内接收的光的强度。 有利地，考虑到光源发射的光的强度和存在任何干扰物如二氧化氮的波动来确定甲醛的浓度。 还提出了一种测量封闭环境中甲醛浓度的方法。
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公开(公告)号：US07651597B2
公开(公告)日：2010-01-26
申请号：US11012503
申请日：2004-12-15
申请人： John R. Saffell , Richard Smith , Darry H. Dawson
发明人： John R. Saffell , Richard Smith , Darry H. Dawson
IPC分类号： G01N27/26
CPC分类号： G01N27/4045 , G01N33/004 , G01N33/0044
摘要： A dual gas sensor is described, having first and second working electrodes separated by a gas impermeable portion. The electrodes are preferably located on a gas permeable polymer support, with the gas impermeable portion being formed by compression of the permeable support. The sensor may also include one or more filters for location adjacent the electrodes to filter certain gases from the air. The preferred sensor is able to detect carbon monoxide and hydrogen sulfide. The sensor housing is formed with four connection pins, allowing a standard sensor housing to be used for dual sensors as well as single sensors having a dummy pin.
摘要翻译： 描述了双气体传感器，其具有由气体不可渗透部分分开的第一和第二工作电极。 电极优选位于透气性聚合物载体上，气体不可渗透部分通过压缩可渗透载体形成。 传感器还可以包括一个或多个用于邻近电极定位的过滤器，以过滤来自空气的某些气体。 优选的传感器能够检测一氧化碳和硫化氢。 传感器外壳形成有四个连接销，允许将标准传感器外壳用于双传感器以及具有虚拟引脚的单个传感器。
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公开(公告)号：US20050145493A1
公开(公告)日：2005-07-07
申请号：US11012503
申请日：2004-12-15
申请人： John Saffell , Richard Smith , Darry Dawson
发明人： John Saffell , Richard Smith , Darry Dawson
CPC分类号： G01N27/4045 , G01N33/004 , G01N33/0044
摘要： A dual gas sensor is described, having first and second working electrodes separated by a gas impermeable portion. The electrodes are preferably located on a gas permeable polymer support, with the gas impermeable portion being formed by compression of the permeable support. The sensor may also include one or more filters for location adjacent the electrodes to filter certain gases from the air. The preferred sensor is able to detect carbon monoxide and hydrogen sulfide. The sensor housing is formed with four connection pins, allowing a standard sensor housing to be used for dual sensors as well as single sensors having a dummy pin.
摘要翻译： 描述了双气体传感器，其具有由气体不可渗透部分分开的第一和第二工作电极。 电极优选位于透气性聚合物载体上，气体不可渗透部分通过压缩可渗透载体形成。 传感器还可以包括一个或多个用于邻近电极定位的过滤器，以过滤来自空气的某些气体。 优选的传感器能够检测一氧化碳和硫化氢。 传感器外壳形成有四个连接销，允许将标准传感器外壳用于双传感器以及具有虚拟引脚的单个传感器。
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公开(公告)号：US20240345041A1
公开(公告)日：2024-10-17
申请号：US18633985
申请日：2024-04-12
申请人： ALPHASENSE LIMITED
CPC分类号： G01N30/64 , G01N27/66 , G01N33/0047 , G01N2030/642
摘要： A photo-ionization detector (PID) including a UV source; an ionization chamber for receiving sample gas; a plurality of electrodes, including a first electrode, for detecting gaseous analyte ionized in the ionization chamber; a controller; and at least one sensor in electronic communication with the controller for measuring a condition of the sample gas, and methods of using the same.
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公开(公告)号：US10775338B2
公开(公告)日：2020-09-15
申请号：US15401704
申请日：2017-01-09
申请人： ALPHASENSE LIMITED
发明人： John Saffell , Ronan Baron , Marlene Hossain
IPC分类号： G01N27/40 , G01N33/00 , G01N27/404 , G01N27/413
摘要： The invention relates to an electrochemical gas sensing apparatus for sensing one or more analytes, such as NO2 and/or O3, in a sample gas and a method of using same. The apparatus uses Mn2O3 as a filter for ozone. The Mn2O3 may take the form of a powder which may be unmixed, mixed with various PTFE particles sizes, formed into a solid layer deposited onto a membrane and/or pretreated with NO2.
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公开(公告)号：US20100065442A9
公开(公告)日：2010-03-18
申请号：US12182573
申请日：2008-07-30
CPC分类号： G01N27/404 , G01N33/0014
摘要： A flue gas analyser for measuring the concentration of oxygen in flue gas, comprising an electrochemical oxygen sensor and water vapour removing means for reducing the relative humidity of received gas and/or nitrogen-containing-gas removing means for removing from received gas one or more gaseous species comprising nitrogen and oxygen which are either nitrogen dioxide, or formed from nitrogen dioxide in the presence of sufficient water vapour, which would otherwise lead to damage of the electrochemical oxygen sensor,
摘要翻译： 一种用于测量烟道气中氧浓度的烟道气分析仪，包括用于减少接收气体和/或含氮气体去除装置的相对湿度的电化学氧传感器和水蒸汽去除装置，用于从接收的气体中去除一个或多个 包含氮和氧的气态物质是二氧化氮，或由二氧化氮在足够的水蒸汽存在下形成，否则会导致电化学氧传感器的损坏，
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