Leak detector
    1.
    发明授权
    Leak detector 失效
    泄漏检测器

    公开(公告)号:US4897551A

    公开(公告)日:1990-01-30

    申请号:US179847

    申请日:1988-04-11

    IPC分类号: G01M3/38 G01N21/64

    摘要: A leak detector for monitoring, in an area being investigated, the presence of a liquid having a characteristic fluorescence spectrum. The leak detector includes a radiation source, with the radiation provided to the area being investigated. The detector also includes a collector for collecting radiation, in the fluorescence emission band of the liquid being monitored, emitted from the area being investigated. The presence of this liquid is sensed by detection of a threshold level of collected radiation. The size of a stain of the liquid relative to the size of the field of view of the collector is then determined.

    摘要翻译: 一种用于在正在研究的区域中监测具有特征荧光光谱的液体的存在的检漏器。 泄漏检测器包括辐射源,其中辐射提供给被研究的区域。 检测器还包括一个收集器,用于收集被检测液体的荧光发射带中的辐射,从被调查的区域发射。 通过检测收集的辐射的阈值水平来感测该液体的存在。 然后确定液体相对于收集器视场尺寸的污渍的尺寸。

    Systems and methods for optically measuring properties of hydrocarbon
fuel gases
    2.
    发明授权
    Systems and methods for optically measuring properties of hydrocarbon fuel gases 失效
    用于光学测量烃类燃料气体性质的系统和方法

    公开(公告)号:US5822058A

    公开(公告)日:1998-10-13

    申请号:US784608

    申请日:1997-01-21

    摘要: A system and method for optical interrogation and measurement of a hydrocarbon fuel gas includes a light source generating light at near-visible wavelengths. A cell containing the gas is optically coupled to the light source which is in turn partially transmitted by the sample. A spectrometer disperses the transmitted light and captures an image thereof. The image is captured by a low-cost silicon-based two-dimensional CCD array. The captured spectral image is processed by electronics for determining energy or BTU content and composition of the gas. The innovative optical approach provides a relatively inexpensive, durable, maintenance-free sensor and method which is reliable in the field and relatively simple to calibrate. In view of the above, accurate monitoring is possible at a plurality of locations along the distribution chain leading to more efficient distribution.

    摘要翻译: 用于光学询问和测量烃燃料气体的系统和方法包括产生近似可见波长的光的光源。 含有气体的电池光学耦合到光源,光源又被样品部分透射。 光谱仪分散透射光并捕获其图像。 该图像由低成本硅基二维CCD阵列捕获。 捕获的光谱图像由用于确定能量或BTU含量和气体组成的电子器件处理。 创新的光学方法提供了相对便宜,耐用,免维护的传感器和方法,其在现场是可靠的并且相对简单地校准。 鉴于上述情况,可以在沿着分销链的多个位置处进行准确的监视,从而导致更有效的分配。

    Ultraviolet absorption hygrometer
    3.
    发明授权
    Ultraviolet absorption hygrometer 失效
    紫外线吸收式湿度计

    公开(公告)号:US4627284A

    公开(公告)日:1986-12-09

    申请号:US757165

    申请日:1985-07-22

    摘要: An ultraviolet absorption hygrometer is provided including a source of pulsed ultraviolet radiation for providing radiation in a first wavelength region where water absorbs significantly and in a second proximate wavelength region where water absorbs weakly. Ultraviolet radiation in the first and second regions which has been transmitted through a sample path of atmosphere is detected. The intensity of the radiation transmitted in each of the first and second regions is compared and from this comparison the amount of water in the sample path is determined.

    摘要翻译: 提供一种紫外线吸收式湿度计,其包括用于在水吸收显着的第一波长区域中提供辐射的脉冲紫外线辐射源,以及在弱吸收水的第二接近波长区域。 检测已经透过大气样本路径的第一和第二区域中的紫外线辐射。 比较在第一和第二区域中的每一个中发射的辐射的强度,并从该比较中确定样品路径中的水量。

    Spark spectroscopic high-pressure gas analyzer
    4.
    发明授权
    Spark spectroscopic high-pressure gas analyzer 失效
    火花光谱高压气体分析仪

    公开(公告)号:US4723438A

    公开(公告)日:1988-02-09

    申请号:US810609

    申请日:1985-12-19

    摘要: A spark spectroscopic high-pressure gas analyzer including a spark chamber, having a pair of electrodes, for receiving a sample of the pressurized gas to be analyzed. A voltage is provided across the electrodes for generating a spark in the pressurized gas sample. A selected wavelength band of radiation emitted from the spark discharge in the pressurized gas corresponding to a component to be sensed in the gas is detected. The intensity of the emission in the wavelength band is integrated during the afterglow time interval of the spark emission and a signal representative of the integrated intensity of the emission in the selected narrow wavelength band is employed to determine the proportion of the component in the gas.

    摘要翻译: 一种火花光谱高压气体分析仪,包括具有一对电极的火花室,用于接收待分析的加压气体的样品。 在电极两端提供电压以在加压气体样品中产生火花。 检测从加压气体中的火花放电发出的对应于待检测气体中的成分的所选择的波长带的波长带。 在火花发射的余辉时间间隔期间,波长带中的发射强度被积分,并且采用表示所选窄波段中的发射的积分强度的信号来确定气体中的成分的比例。

    Infrared molecular species monitor
    5.
    发明授权
    Infrared molecular species monitor 失效
    红外分子物种监测

    公开(公告)号:US4782232A

    公开(公告)日:1988-11-01

    申请号:US909918

    申请日:1986-09-22

    IPC分类号: G01J3/10 G01N21/35 G01N21/61

    摘要: An infrared monitor for measuring the presence of at least one gas phase molecular species including a sample path for containing a sample to be monitored for the molecular species. A sample beam of infrared source emission of the molecular species to be monitored for passage through the sample path is provided to the sample path. The sample beam includes at least one primary spectral emission line which is significantly absorbed by the molecular species. The decrease in the intensity of the at least one primary infrared source spectral emission line passing through the sample path is detected as a function of the absorption of the at least one line by the molecular species present in the sample.

    摘要翻译: 一种用于测量至少一种气相分子物质的存在的红外监测器,包括用于包含要监测分子物种的样品的样品路径。 样品路径上提供待监测通过样品路径的分子物种的红外源发射样品束。 样品束包括被分子种类显着吸收的至少一个主光谱发射线。 通过样品路径中的至少一个主要红外源光谱发射线的强度的降低被检测为由样品中存在的分子种类吸收至少一条线的函数。

    Motion detection and measurement
    6.
    发明授权
    Motion detection and measurement 失效
    运动检测和测量

    公开(公告)号:US4086808A

    公开(公告)日:1978-05-02

    申请号:US708307

    申请日:1976-07-26

    摘要: Methods and apparatus are disclosed for measuring and monitoring vibrational or similar motion in mechanical elements. Retroreflectors on the elements are illuminated with monochromatic light, preferably a laser, and the reflected beams form an interference pattern. Shifts in the interference fringes correspond to motion which changes the relative length of the paths of reflected light and these shifts are counted or analyzed to monitor such motion. Both micro and macro motion can be monitored.

    摘要翻译: 公开了用于测量和监测机械元件中的振动或类似运动的方法和装置。 元件上的后向反射器用单色光(优选为激光)照射,并且反射光束形成干涉图案。 干涉条纹中的移动对应于改变反射光路径的相对长度的运动,并且对这些偏移进行计数或分析以监视这种运动。 微观和微观运动都可以监控。

    Off-line-locked laser diode species monitor system
    8.
    发明授权
    Off-line-locked laser diode species monitor system 失效
    离线激光二极管种类监控系统

    公开(公告)号:US5459574A

    公开(公告)日:1995-10-17

    申请号:US324101

    申请日:1994-10-14

    IPC分类号: G01N21/39 G01N21/61

    CPC分类号: G01N21/39 G01N2021/399

    摘要: An off-line-locked laser diode species monitor system includes: reference means for including at least one known species having a first absorption wavelength; a laser source for irradiating the reference means and at least one sample species having a second absorption wavelength differing from the first absorption wavelength by a predetermined amount; means for locking the wavelength of the laser source to the first wavelength of the at least one known species in the reference means; a controller for defeating the means for locking and for displacing the laser source wavelength from said first absorption wavelength by said predetermined amount to the second absorption wavelength; and a sample detector device for determining laser radiation absorption at the second wavelength transmitted through the sample to detect the presence of the at least one sample species.

    摘要翻译: 离线激光二极管种类监测系统包括:用于包括至少一种具有第一吸收波长的已知物质的参考装置; 激光源,用于将参考装置和至少一个具有与第一吸收波长不同的第二吸收波长的样品物质照射预定量; 用于将激光源的波长锁定在参考装置中的至少一个已知物种的第一波长的装置; 用于消除用于锁定和将激光源波长从所述第一吸收波长移位所述预定量到第二吸收波长的装置的控制器; 以及样品检测器装置,用于确定透过样品的第二波长的激光辐射吸收,以检测至少一个样品物种的存在。

    Gas species monitor system
    9.
    发明授权
    Gas species monitor system 失效
    气体监测系统

    公开(公告)号:US4953976A

    公开(公告)日:1990-09-04

    申请号:US325981

    申请日:1989-03-20

    摘要: A gas species monitor system includes a sample volume for receiving a gas to be monitored; an external, independent laser source; means for directing the laser radiation to the volume; a multipass optical cell, responsive to the means for directing, for multiplying the laser radiation intensity in the sample volume; means for continuously flowing the gas to be monitored through the sample volume; a narrow bandpass filter; means for collecting more than a steradian of Raman scattered radiation from the sample in the volume and directing the collected radiation in parallel through the narrow bandpass filter; and means responsive to the parallel radiation from the filter for detecting the Raman scattered radiation representative of the concentration of the species in the gas sample being monitored.

    摘要翻译: 气体监测系统包括用于接收待监测气体的样品体积; 外部独立的激光源; 用于将激光辐射引导到体积的装置; 响应于用于引导的装置,用于乘以样品体积中的激光辐射强度的多通道光学单元; 用于使待监测气体持续流过样品体积的装置; 窄带通滤波器; 用于从体积中收集来自样品的拉曼散射辐射的多于反射率的装置,并通过窄带通滤光器并联引导所收集的辐射; 以及响应于来自过滤器的平行辐射的装置,用于检测表示被监测气体样品中物种浓度的拉曼散射辐射。

    Infrared trace element detection system
    10.
    发明授权
    Infrared trace element detection system 失效
    红外线痕量元素检测系统

    公开(公告)号:US4785184A

    公开(公告)日:1988-11-15

    申请号:US866891

    申请日:1986-05-27

    摘要: An infrared trace element detection system including an optical cell into which the sample fluid to be examined is introduced and removed. Also introduced into the optical cell is a sample beam of infrared radiation in a first wavelength band which is significantly absorbed by the trace element and a second wavelength band which is not significantly absorbed by the trace element for passage through the optical cell through the sample fluid. The output intensities of the sample beam of radiation are selectively detected in the first and second wavelength bands. The intensities of a reference beam of the radiation are similarly detected in the first and second wavelength bands. The sensed output intensity of the sample beam in one of the first and second wavelength bands is normalized with respect to the other and similarly, the intensity of the reference beam of radiation in one of the first and second wavelength bands is normalized with respect to the other. The normalized sample beam intensity and normalized reference beam intensity are then compared to provide a signal from which the amount of trace element in the sample fluid can be determined.

    摘要翻译: 一种红外线微量元素检测系统,包括一个光学单元,待检查的样品流体被引入和移除。 还引入到光学单元中的是第一波长带中的红外辐射的样品束,其被微量元素显着吸收,并且第二波长带不被微量元素显着吸收,以通过样品流体通过光学单元 。 在第一和第二波长带中选择性地检测采样光束的输出强度。 类似地在第一和第二波长带中检测辐射的参考光束的强度。 在第一和第二波段中的一个波长带中的采样光束的感测输出强度相对于另一个被归一化,类似地,第一和第二波段之一中的参考光束的强度相对于 其他。 然后比较归一化样品光束强度和归一化参考光束强度,以提供可以确定样品流体中微量元素量的信号。