ATOMIC FLUORESCENCE SPECTROMETERS
    21.
    发明专利

    公开(公告)号:GB1396806A

    公开(公告)日:1975-06-04

    申请号:GB3609173

    申请日:1973-07-30

    Applicant: UNISEARCH LTD

    Abstract: 1396806 Atomic fluorescence spectrometer UNISEARCH Ltd 30 July 1973 [4 Aug 1972] 36091/73 Heading G1A An atomic fluorescence spectrometer comprises a light source 1, chopper 2, a dual channel detection system, both channels receiving radiation from a burner or non-flame cell containing the test vapour, each channel including a monochromator or filter 6, photo-multiplier 7, amplifier 8, voltage to frequency converter 9 and counter-timer 10, are channel det' ting signals at the wavelength at which the vapour fluoresces, the other channel detecting signals at a wavelength at which the sample light is intense but at which there is no fluorescence. Noise due to thermal emission, chemiluminescenee and background emission is eliminated by synchronous demodulation from the chopper via stop-start control 11. Rayleigh scattering B eliminated by subtracting the demodulated output signal from the non-fluorescent channel from that provided by the fluorescent channel to yield the signal due to fluorescence alone. The chopper runs at 4 Hertz. The counter is set to integrate the pulses over specified time periods wholly contained within successive light-on periods or with successive light-off periods.

    Apparatus for emission spectrochemical analysis
    23.
    发明公开
    Apparatus for emission spectrochemical analysis 无效
    一种用于分光化学发光分析。

    公开(公告)号:EP0009766A1

    公开(公告)日:1980-04-16

    申请号:EP79103657.7

    申请日:1979-09-26

    CPC classification number: G01J3/36 G01J2003/2866

    Abstract: Apparatus for emission spectrochemical analysis wherein the sample to be analyzed is excited by repeated spark discharge to emit light, which is dispersed to produce a spectrum containing emission lines characteristic of the elements in the sample. The intensity or quantity of light of each of the emission lines of the elements to be determined and that of the corresponding one of the emission lines selected as the internal standards for the elements to be determined are measured each time a spark discharge is produced to obtain the ratio of the former intensity or quantity to the latter at each spark discharge, and the ratios resulting from a predetermined number of spark discharges are averaged for each of the elements to be determined. From the average the content of each of the elements is read on a calibration curve.

    Spectrophotometer receiving a variable quantity of light
    26.
    发明授权
    Spectrophotometer receiving a variable quantity of light 失效
    分光光度计接收可变光量

    公开(公告)号:US4330209A

    公开(公告)日:1982-05-18

    申请号:US69924

    申请日:1979-08-27

    CPC classification number: G01J3/2803

    Abstract: This specification discloses a spectrophotometer utilizing, as the photoelectrical converting element, an image sensor capable of electrical scanning such as a photo-diode array, thus adjusting the integration time thereof, namely, the scanning time of the image sensor and enhancing the S/N (signal-to-noise ratio).

    Abstract translation: 本说明书公开了一种使用光电转换元件作为光电二极管阵列等能够进行电扫描的图像传感器的分光光度计,由此调整其积分时间,即图像传感器的扫描时间,提高S / N (信噪比)。

    Apparatus for measurement of soil moisture content
    27.
    发明授权
    Apparatus for measurement of soil moisture content 失效
    用于测量土壤含水量的装置

    公开(公告)号:US4266878A

    公开(公告)日:1981-05-12

    申请号:US972773

    申请日:1978-12-26

    CPC classification number: G01N33/246 G01N21/3554 G01N21/55

    Abstract: An apparatus for measuring the moisture content of a soil sample at selected depths is disclosed. Light is conducted from a source via a fiber optical cable to a soil probe which is inserted at selected depths into a bore hole formed in the soil sample. Light from the source and reflected light from the soil sample is conducted via fiber optic cables to a reflectometer, which determines reflection factors of the soil sample at three selected infrared wavelengths of a water absorption band. Means are provided to compute the moisture content of the sample at the selected depths from the measured reflectance factors.

    Abstract translation: 公开了一种用于在选定深度测量土壤样品的含水量的装置。 光从源通过光纤光缆传导到土壤探针,土壤探针以选定的深度插入到形成于土壤样品中的钻孔中。 来自源的光和来自土壤样品的反射光通过光纤电缆传输到反射计,其反映了在吸水带的三个选定的红外波长处的土壤样品的反射因子。 提供了用于根据测量的反射系数计算所选深度处的样品的水分含量的方法。

    Electro-optical detector array and spectrum analyzer system
    28.
    发明授权
    Electro-optical detector array and spectrum analyzer system 失效
    电光探测器阵列和频谱分析仪系统

    公开(公告)号:US3973118A

    公开(公告)日:1976-08-03

    申请号:US561882

    申请日:1975-03-25

    CPC classification number: G01J3/36 G01J3/0256 G01J3/0291

    Abstract: An electro-optical detector array and spectrum analyzer system consisting of a novel detector array containing a plurality of photodetectors, each covered by a different narrow band optical filter and each activated when an electromagnetic energy source admitted by the narrow band optical filter is present whereby discrete components of the electromagnetic energy can be identified simultaneously and nearly instantaneously by comparison with the known wavelength admittance characteristics of said narrow band optical filter. Companion electronics and associated metering equipment complete the system.

    Abstract translation: 一种电光检测器阵列和频谱分析仪系统,其由包含多个光电检测器的新型检测器阵列组成,每个检测器阵列各自被不同的窄带滤光器覆盖,并且当存在由窄带滤光器允许的电磁能量源时被激活,从而离散 通过与所述窄带滤光器的已知波导导纳特性进行比较,能够同时且几乎瞬时地识别电磁能的分量。 配套电子及相关计量设备完成系统。

    REMOTE RADIATION SENSING INSTRUMENT

    公开(公告)号:AU8795082A

    公开(公告)日:1983-03-10

    申请号:AU8795082

    申请日:1982-09-02

    Applicant: NZ GOVERNMENT

    Abstract: A hand-held, battery powered instrument for the determination and recording of the intensity of radiation emitted or reflected by a target in the field in spectral bands from 400 nm to 12 micrometers. Two fields of view, typically 20 DEG and 1 DEG , are provided. The pointing accuracy is 0.1 DEG or better. Multiple detectors are controlled by a single shutter. Gain and zero controls are preset, the whole spectral band is sampled in 4 seconds, and the results stored. They are later called up and shown on a liquid crystal display digitized to 9999.

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