Flame quality analysis
    1.
    发明公开
    Flame quality analysis 失效
    火焰质量分析

    公开(公告)号:EP0168235A3

    公开(公告)日:1987-07-29

    申请号:EP85304854

    申请日:1985-07-08

    Abstract: A flame quality analyser for analysing one or more properties of a flame from a burner comprises a fibre optic array (32,33) including a plurality of optical fibres each having a light-receiving end lying in a line and facing the flame. The line may extend parallel to the flame and burner axis (array 32) or may extend perpendicular to that axis (array 33). The light received by the fibre optic array (32,33) is provided as a sheet of light to a monochromator which spreads the light into its component wavelengths. A pair of spaced apart arrays of light detectors is then utilised to measure the light at two discrete wavelengths. This detection produces signals that can be analysed to generate temperature and particles distribution values for the flame across its length or width.

    Spectrophotometer
    2.
    发明公开
    Spectrophotometer 失效
    分光光度计

    公开(公告)号:EP0207498A3

    公开(公告)日:1988-04-27

    申请号:EP86108951

    申请日:1986-07-01

    Inventor: Fukuma, Toshiaki

    CPC classification number: G01J3/28 G01J2003/062 G01J2003/066

    Abstract: A spectrophotometer wherein the diffraction grating is driven directly by a pulse motor and the wavelength of the monochromatic light used for measurement is calculated by a data processor from the amount of rotation of the pulse motor. The data processor is provided with an Input unit for setting a parameter corresponding to the difference between the nominal and actual grating constants of the diffraction grating and so arranged as to calculate the wavelength in accordance with the nominal grating constant having been modified with the parameter set through the Input unit.

    Spectrophotometer with wavelength calibration
    3.
    发明公开
    Spectrophotometer with wavelength calibration 失效
    具有波长校准的分光光度计

    公开(公告)号:EP0091535A3

    公开(公告)日:1984-07-25

    申请号:EP82850250

    申请日:1982-12-03

    CPC classification number: G01J3/12 G01J3/28

    Abstract: Photometer having a variable wavelength comprising at least one light source, a monochromator having an adjustable wavelength, a sample position and a detector which detects the substantially monochromatic radiation obtained from the light source via the monochromator and the sample position. Furthermore, the photometer comprises a rotatable disc located in the light path and provided with angle position indication means by means of which it is possible to determine from the instant values of the detector signal the segment of the disc that has affected the radiation giving rise to the instant values in question.

    Abstract translation: 具有包括至少一个光源的可变波长的光度计,具有可调波长的单色仪,采样位置和检测器,其检测通过单色仪和样本位置从光源获得的基本上单色的辐射。 此外,光度计包括位于光路中并且设置有角度位置指示装置的可旋转盘,借助于该位置指示装置,可以从检测器信号的瞬间值确定已经影响辐射的盘的片段 即时价值。

    Multiwavelenght spectrophotometer
    6.
    发明公开
    Multiwavelenght spectrophotometer 失效
    多光谱分光光度计多波长分光光度计

    公开(公告)号:EP0156232A3

    公开(公告)日:1988-01-27

    申请号:EP85102785

    申请日:1985-03-12

    Applicant: HITACHI, LTD.

    Inventor: Nogami, Taro

    CPC classification number: G01J3/2803

    Abstract: Light from a light source is dispersed by a grating. Two multichannel light detectors are arranged for detecting the dispersed light. One light detector detects the first order of interference and the other light detector detects the second order of interference in overlapping wavelength ranges. The outputs of the two light detectors are averaged for improving the S/N ratio, particularly in wavelength ranges in which the light intensity of the light source is low.

    Automatic wavelength calibration correction system
    9.
    发明公开
    Automatic wavelength calibration correction system 失效
    自动波长校准校正系统

    公开(公告)号:EP0121714A3

    公开(公告)日:1986-05-07

    申请号:EP84101990

    申请日:1984-02-25

    CPC classification number: G01J3/28 G01J3/18 G01J2003/2866

    Abstract: A system for maintaining the wavelength scale calibration of diffraction grating based spectrometers and monochromators is disclosed. The system utilizes the approximately fixed angular relationship between diffracted and undiffracted light emanating from the diffraction grating to maintain the calibration of an instrument. One or more photodetectors are used to measure shifts in an undiffracted image due to mechanical misalignments that cause errors in the instrument's wavelength scale. Once direction and degree of shift known, the instrument is recalibrated either by adjusting various mechanical and/or optical structures within the instrument to shift the undiffracted images by an amount equal to, but in a direction opposite the measured shift so that the diffracted light is likeweise shifted, or by relabeling the wavelength scale outputs by an amount derived from the measured shift.

    Abstract translation: 公开了一种用于维持基于衍射光栅的光谱仪和单色仪的波长刻度校准的系统。 该系统利用从衍射光栅发射的衍射光和未衍射光之间的近似固定的角度关系来维持仪器的校准。 使用一个或多个光电检测器来测量由于导致仪器波长尺度误差的机械未对准而导致的未衍射图像中的偏移。 一旦方向和移位程度已知,仪器通过调整仪器内的各种机械和/或光学结构来重新校准,以使未衍射的图像移动量等于但在与所测量的位移相反的方向上,使衍射光为 或者通过将波长尺度输出重新标定为从测量的移位导出的量。

    Method and apparatus for simultaneously recording multiple FT-IR signals
    10.
    发明公开
    Method and apparatus for simultaneously recording multiple FT-IR signals 失效
    同时记录多个FT-IR信号的方法和装置

    公开(公告)号:EP0104333A3

    公开(公告)日:1984-11-28

    申请号:EP83106496

    申请日:1983-07-04

    CPC classification number: G01J3/453

    Abstract: Method and apparatus for simultaneously recording multiple Fourier Transform Infrared (FT-IR) signals. The analog signals from an interferometer are coupled to switching means which is operable in response to a first control signal for synchronizing the operation of the interferometer and a second control signal for defining data acquisition intervals to direct the sampled data of the analog input signals over a circuit path including Sample and Hold and Analog to Digital Conversion circuits to a processor for storing the digital data corresponding to the analog input signals. The switching means is operated so that samples of the analog input signals are taken in sequence and stored in sequential storage locations in interleaved fashion. The processor is operable under program control to access the digital data so that all data samples for the same input signals are separated to produce an interferogram for each of the input signals. These interferograms can then be Fourier transformed to produce spectra in the usual manner.

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