System for regulating fluid flowing through chromatographic column
    1.
    发明授权
    System for regulating fluid flowing through chromatographic column 有权
    用于调节流经色谱柱的流体的系统

    公开(公告)号:US08297107B2

    公开(公告)日:2012-10-30

    申请号:US11751327

    申请日:2007-05-21

    IPC分类号: G01N30/04

    摘要: Disclosed are systems and methods that include a sampling device, a chromatographic column, and a transfer line through which a fluid containing analytes to be measured are communicated from the sampling device to the column. The pressure at which the fluid containing the analytes is applied at the inlet of the transfer line is adjusted as the temperature of the column increases in accordance with certain relationships in order to maintain a substantially constant flow rate or velocity for the fluid exiting the column. In this way, the system compensates for changes in the viscosity of the fluid flowing through the column that result from changes in the column temperature.

    摘要翻译: 公开了包括采样装置,色谱柱和传输线的系统和方法,含有待测量待分析物的流体通过该传输线从采样装置传送到塔。 随着塔的温度根据某些关系而增加包含分析物的流体在输送管线的入口处的压力,以便为离开塔的流体保持基本上恒定的流速或速度。 以这种方式,该系统补偿由柱温变化引起的流经塔的流体的粘度变化。

    System for Controlling Flow Into Chromatographic Column Using Transfer Line Impedance
    2.
    发明申请
    System for Controlling Flow Into Chromatographic Column Using Transfer Line Impedance 有权
    使用传输线阻抗控制流入色谱柱的系统

    公开(公告)号:US20090084261A1

    公开(公告)日:2009-04-02

    申请号:US12332539

    申请日:2008-12-11

    IPC分类号: B01D46/46 B01D53/02

    摘要: A system for controlling the flow rate into a chromatographic column is disclosed generally comprising communicating a fluid to the column through a transfer line, measuring the inlet pressure, determining the outlet pressure, and adjusting the applied pressure until the inlet and outlet pressures produce a desired flow rate for the transfer line outlet. In certain embodiments, the applied pressure is adjusted by controlling a proportional valve. In some embodiments, the outlet pressure is determined by measuring the pressure drop across the transfer line and calculating the outlet pressure from the measured inlet pressure and the pressure drop.

    摘要翻译: 公开了一种用于控制进入色谱柱的流速的系统,其通常包括通过输送管线将流体连通到塔,测量入口压力,确定出口压力,以及调节施加的压力,直到入口和出口压力产生期望的 传输线出口的流量。 在某些实施例中,通过控制比例阀来调节所施加的压力。 在一些实施例中,通过测量输送管线上的压降并根据测量的入口压力和压降计算出口压力来确定出口压力。

    System for regulating fluid flowing through chromatographic column
    3.
    发明授权
    System for regulating fluid flowing through chromatographic column 有权
    用于调节流经色谱柱的流体的系统

    公开(公告)号:US07219532B2

    公开(公告)日:2007-05-22

    申请号:US11189467

    申请日:2005-07-26

    IPC分类号: G01N30/04

    摘要: Disclosed are systems and methods that include a sampling device, a chromatographic column, and a transfer line through which a fluid containing analytes to be measured are communicated from the sampling device to the column. The pressure at which the fluid containing the analytes is applied at the inlet of the transfer line is adjusted as the temperature of the column increases in accordance with certain relationships in order to maintain a substantially constant flow rate or velocity for the fluid exiting the column. In this way, the system compensates for changes in the viscosity of the fluid flowing through the column that result from changes in the column temperature.

    摘要翻译: 公开了包括采样装置,色谱柱和传输线的系统和方法,含有待测量待分析物的流体通过该传输线从采样装置传送到塔。 随着塔的温度根据某些关系而增加包含分析物的流体在输送管线的入口处的压力,以便为离开塔的流体保持基本恒定的流速或速度。 以这种方式,该系统补偿由柱温变化引起的流经塔的流体的粘度变化。

    Compact tracking coupler
    4.
    发明授权
    Compact tracking coupler 有权
    紧凑型跟踪耦合器

    公开(公告)号:US08665036B1

    公开(公告)日:2014-03-04

    申请号:US13173930

    申请日:2011-06-30

    IPC分类号: H01P5/12

    CPC分类号: H01P5/12 H01P5/024

    摘要: A compact tracking coupler includes a plurality of ridged waveguides arranged circumferentially around a circular waveguide wherein long sides of the ridged waveguides extend circumferentially and short sides of the ridged waveguides extend radially relative to the circular waveguide. The compact tracking coupler can be especially useful in a multi-band antenna feed.

    摘要翻译: 紧凑的跟踪耦合器包括围绕圆形波导周向布置的多个脊状波导,其中脊状波导的长边在圆周方向上延伸,并且脊状波导的短边相对于圆形波导径向延伸。 紧凑型跟踪耦合器可以在多频带天线馈电中特别有用。