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    Method for determining the safety of gas mixtures
    2.
    发明授权
    Method for determining the safety of gas mixtures 失效
    确定气体混合物安全性的方法

    公开(公告)号：US07126122B2

    公开(公告)日：2006-10-24

    申请号：US10182783

    申请日：2001-01-30

    申请人： Elizabeth Jane Hodgkinson

    发明人： Elizabeth Jane Hodgkinson

    IPC分类号： G01J5/02

    CPC分类号： G01N21/3151 ,  G01N21/3504

    摘要： A method for determining the safety of a gas mixture containing first and second flammable components together with non-flammable components, comprises using an optical detector to make at least two measurements influenced by the concentration in the gas mixture of the first and second flammable components. The percentage lower explosion limit of the gas mixture is calculated by a method based on the combination of the measurements. The method leads to acceptably accurate results, despite the presence of other flammable component(s) in the gas mixture.

    摘要翻译： 一种用于确定包含第一和第二可燃组分与不可燃组分的气体混合物的安全性的方法包括使用光学检测器进行至少两个受第一和第二可燃组分的气体混合物浓度影响的测量。 通过基于测量结合的方法计算气体混合物的爆炸下限百分比。 尽管在气体混合物中存在其它易燃组分，但是该方法导致可接受的精确结果。

    Non-dispersive ir measurement of gases using an optical filter
    3.
    发明授权
    Non-dispersive ir measurement of gases using an optical filter 失效
    使用滤光片对气体进行非分散红外测量

    公开(公告)号：US07091487B2

    公开(公告)日：2006-08-15

    申请号：US10296198

    申请日：2001-05-30

    申请人： Elizabeth Jane Hodgkinson

    发明人： Elizabeth Jane Hodgkinson

    IPC分类号： G01N21/35

    CPC分类号： G01N21/3518

    摘要： A method and apparatus for determining the safety of a gas mixture containing flammable components such as methane together with ethane or other hydrocarbon, together with a diluent gas. The method includes the filtered infrared spectroscopy of the gas mixture in a gas cell using a filter. The peak transmission wavelength and bandwidth of the filter are so chosen to provide an output, when an infrared light source having a flat wavelength distribution is used, indicative of the % LEL of the gas mixture, within a predetermined tolerance. The filter may be a gas correlation filter containing a mixture of methane and ethane, together with a diluent gas.

    摘要翻译： 一种用于确定含有可燃组分如甲烷与乙烷或其他烃以及稀释气体的气体混合物的安全性的方法和装置。 该方法包括使用过滤器的气体池中的气体混合物的过滤的红外光谱。 当使用具有平坦波长分布的红外光源来表示气体混合物的％LEL在预定公差内时，选择滤波器的峰值透射波长和带宽以提供输出。 过滤器可以是包含甲烷和乙烷的混合物以及稀释气体的气体相关过滤器。

    Optical absorption gas sensor
    4.
    发明授权
    Optical absorption gas sensor 有权
    光吸收气体传感器

    公开(公告)号：US08193502B2

    公开(公告)日：2012-06-05

    申请号：US12052916

    申请日：2008-03-21

    申请人： Elizabeth Jane Hodgkinson ,  John Robert Saffell ,  Richard Smith

    发明人： Elizabeth Jane Hodgkinson ,  John Robert Saffell ,  Richard Smith

    IPC分类号： G01J5/02

    CPC分类号： G01N21/0303 ,  G01N21/3504 ,  G01N2021/3166

    摘要： An optical absorption gas sensor comprising a body having an internal wall which defines a chamber, at least one aperture in the body through which a gas sample can enter the chamber, a light source, at least one reflector, a detector assembly which extends into the chamber and has a first side and an opposite second side, a detector which measures light which is incident at least a range of angles on at least a part of a first surface of the detector assembly on the first side of the detector assembly, wherein the light source is located within the chamber on the second side of the detector assembly, the whole being configured such that light from the light source passes through the gas sample and is reflected around the detector assembly, by the at least one reflector, onto the detector.

    摘要翻译： 一种光学吸收气体传感器，包括具有限定腔室的内壁的主体，所述主体中的至少一个孔，气体样品可以通过所述孔进入腔室，光源，至少一个反射器，检测器组件，其延伸到 并且具有第一侧和相对的第二侧，检测器，其测量入射到检测器组件的第一侧上的检测器组件的第一表面的至少一部分上的至少一定角度范围的光，其中， 光源位于检测器组件的第二侧上的腔室内，整体被配置成使得来自光源的光穿过气体样品，并通过至少一个反射器在检测器组件周围反射到检测器上 。

    OPTICAL ABSORPTION GAS SENSOR
    6.
    发明申请
    OPTICAL ABSORPTION GAS SENSOR 有权
    光吸收式气体传感器

    公开(公告)号：US20080239322A1

    公开(公告)日：2008-10-02

    申请号：US12052916

    申请日：2008-03-21

    申请人： Elizabeth Jane HODGKINSON ,  John Robert Saffell ,  Richard Smith

    发明人： Elizabeth Jane HODGKINSON ,  John Robert Saffell ,  Richard Smith

    IPC分类号： G01N21/00

    CPC分类号： G01N21/0303 ,  G01N21/3504 ,  G01N2021/3166

    摘要： An optical absorption gas sensor comprising a body having an internal wall which defines a chamber, at least one aperture in the body through which a gas sample can enter the chamber, a light source, at least one reflector, a detector assembly which extends into the chamber and has a first side and an opposite second side, a detector which measures light which is incident at at least a range of angles on at least a part of a first surface of the detector assembly on the first side of the detector assembly, wherein the light source is located within the chamber on the second side of the detector assembly, the whole being configured such that light from the light source passes through the gas sample and is reflected around the detector assembly, by the at least one reflector, onto the detector.

    摘要翻译： 一种光学吸收气体传感器，包括具有限定腔室的内壁的主体，所述主体中的至少一个孔，气体样品可以通过所述孔进入腔室，光源，至少一个反射器，检测器组件，其延伸到 并且具有第一侧和相对的第二侧，检测器，其测量在检测器组件的第一侧上的检测器组件的第一表面的至少一部分上至少角度范围入射的光，其中 光源位于检测器组件的第二侧上的腔室内，整体被配置成使得来自光源的光穿过气体样品，并通过至少一个反射器在检测器组件周围反射到 探测器。