Method and device for controlling flow rate of carrier gas in
chromatographic apparatus
    1.
    发明授权
    Method and device for controlling flow rate of carrier gas in chromatographic apparatus 失效
    用于控制色谱仪中载气流量的方法和装置

    公开(公告)号:US5859360A

    公开(公告)日:1999-01-12

    申请号:US646308

    申请日:1996-05-15

    摘要: There is provided a method and apparatus for controlling the carrier gas flow through a gas chromatographic apparatus with capillary column subjected to variations in temperature, through control of feeding pressure achieved following computerized processing of the equation of the carrier flow rate as a function of inlet pressure, column temperature and system structural parameters, including preliminary determination of the system parameters through detection of pressure, temperature and flow rate values in stabilized conditions of carrier passage through apparatus and calculation of a constant representing said parameters on the basis of values detected and in application of the aforesaid equation; storage of aforesaid constant; utilization of constant in the mentioned equation for controlling carrier flow rate through calculation and control of its feeding pressure during utilization of the gas chromatographic apparatus.

    摘要翻译: PCT No.PCT / EP95 / 03627 Sec。 371日期:1996年5月15日 102(e)日期1996年5月15日PCT提交1995年9月15日PCT公布。 公开号WO96 / 08718 日期1996年3月21日提供了一种方法和装置,用于控制通过气相色谱仪的载气流动,毛细管柱经受温度变化,通过控制通过计算机处理载体流速方程式后的进料压力, 入口压力,柱温度和系统结构参数的函数,包括通过检测载体通过设备的稳定条件下的压力,温度和流量值初步确定系统参数,并计算基于 检测到的值和上述方程的应用; 储存上述常数; 利用上述方程中的常数,通过计算和控制气相色谱仪利用期间的进料压力来控制载流子流量。