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    • 4. 发明申请
    • Electro-optical sensing device with reference channel
    • 具有参考通道的电光感测装置
    • US20070059210A1
    • 2007-03-15
    • US11595986
    • 2006-11-13
    • Arthur ColvinRobert Lynn
    • Arthur ColvinRobert Lynn
    • G01N21/00
    • G01N21/77G01N21/6428G01N21/783G01N2021/6432G01N2021/7786G01N2021/7793G01N2021/7796Y10T436/144444
    • An electro-optical sensing device for detecting the presence and concentration of an analyte in a liquid or gaseous medium includes a pair of indicator elements positioned to receive radiation from a radiation source and transmit radiation to a pair of photosensitive elements. The indicator elements each contain indicator molecules having an optical characteristic responsive to the presence of an analyte; however, one of the indicator elements is covered by an analyte-impermeable chamber that renders the indicator element insensitive to the presence of the analyte in the medium outside the chamber so that it can be used as a reference to cancel environmental and systemic variables that affect both indicator elements. The chamber preferably holds an analyte-containing fluid in contact with the reference indicator element so that the indicator elements operate under nominally identical conditions. The indicator element used to measure the analyte in the external medium is preferably also covered, but in a manner that provides direct contact between the analyte and the indicator element.
    • 用于检测液体或气体介质中分析物的存在和浓度的电光检测装置包括一对指示元件,其被定位成接收来自辐射源的辐射并将辐射传输到一对感光元件。 指示剂元素各自包含具有响应于分析物存在的光学特性的指示剂分子; 然而,其中一个指示元件被分析物不可渗透的腔室覆盖,使得指示元件对室内的介质中分析物的存在不敏感,使得其可以用作参考以消除影响的环境和系统变量 两个指标元素。 该室优选地保持与参考指示元件接触的含分析物的流体,使得指示元件在名义上相同的条件下操作。 用于测量外部介质中的分析物的指示剂元素优选也被覆盖,但是以提供分析物与指示剂元件之间的直接接触的方式。