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    • 48. 发明授权
    • Method and apparatus for controlling measurement in a spectrophotometer
    • 用于在分光光度计中控制测量的方法和装置
    • US4545681A
    • 1985-10-08
    • US465337
    • 1983-02-09
    • Shinichiro Watanabe
    • Shinichiro Watanabe
    • G01J3/08G01J3/42
    • G01J3/42G01J3/08G01N2201/127
    • In a spectrophotometer of double beam type using automatic gain control, preparatory scanning is first carried out by scanning reference and sample cells with radiation of varying wavelengths both in an empty state, and controlling the gain of a photo detector at each wavelength such that a detector output responding to a sample cell transmitted beam may become constant while storing a detector output responding to a reference cell transmitted beam. Measurement of a sample material is then carried out at each wavelength by scanning the reference cell and the sample material-charged sample cell, reading out the reference output stored in the preparatory scanning stage as a reference voltage, and controlling the gain of the detector such that a detector output responding to a reference cell transmitted beam may be equal to the reference voltage.
    • 在使用自动增益控制的双光束类型的分光光度计中,首先通过以空白状态扫描具有变化波长的辐射的参考和采样单元并且在每个波长处控制光电检测器的增益来执行预扫描,使得检测器 响应于采样小区发射波束的输出可以变得恒定,同时存储响应于参考小区发射波束的检测器输出。 然后通过扫描参考电池和样品充电样品池,读取存储在预备扫描阶段中的参考输出作为参考电压,并且将检测器的增益控制在每个波长上,从而测量样品材料 响应于参考小区发射波束的检测器输出可以等于参考电压。