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公开(公告)号：US3809903A
公开(公告)日：1974-05-07
申请号：US20375771
申请日：1971-12-01
Applicant: INDUSTRIAL NUCLEONICS CORP
CPC classification number: G01N23/16
Abstract: A radiation transmission gauge to measure during manufacture the low atomic number, non-homogeneous, large thickness materials, such as fiberglass, using primarily the radiation photoelectric effect. The gauge source-detector geometry provides monoenergetic X-rays in the 14-30 KEV range, produced by a primary source of gamma radiation of higher energy, through fluorescence of a target. The radiation detector uses Krypton gas and the target material is selected to produce a fluorescence radiation that is above and substantially close to the K-edge of the Krypton gas. Other features of the source-detector geometry minimize the presence of the primary source radiation, to improve gauge accuracy.
Abstract translation: 辐射传输仪在制造过程中要测量低原子数，非均匀，大厚度的材料，如玻璃纤维，主要采用辐射光电效应。 量规源检测器几何提供14-30KEV范围内的单能X射线，由较高能量的γ射线的主要来源通过靶的荧光产生。 放射线检测器使用氪气，并且选择目标材料以产生高于且基本上接近氪气的K边缘的荧光辐射。 源 - 检测器几何形状的其他特征最小化了主源辐射的存在，从而提高计量精度。
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2.发明授权
公开(公告)号：US3827808A
公开(公告)日：1974-08-06
申请号：US35860673
申请日：1973-05-09
Applicant: INDUSTRIAL NUCLEONICS CORP
Inventor： CHO B
CPC classification number: G01N21/86 , G01N33/346
Abstract: Specifically disclosed is a method and apparatus for measuring the opacity of sheet material, more particularly for measuring the opacity of paper according to the TAPPI contrast ratio definition. A moving sheet of paper from a paper making machine or coater is passed through the gap between a light source and a photodetector. The light transmitted through the paper is passed through a window of opal glass and a bandpass filter before it is received by the photodetector. The opal glass window constitutes a partial reflector having an effective reflectivity between about 20 and 70 percent. This produces multiple reflections between the opal glass and the paper next to it, with sufficient magnitude to compensate the transmittance measurement for the reflectivity of the paper, and thereby automatically corrects the instrument for changes in the composition of the paper. Because of the bandpass filter, the photodetector responds substantially only to light in the visible portion of the spectrum. According to another disclosed arrangement wherein the opal glass window is not used, the instrument is compensated by the use of a second photodetector responsive to light reflected from the side of the paper where the light source is located. Signals from the two detectors are then combined in a simple computer arrangement to obtain a signal which is compensated for the reflectivity of the paper. The compensated signal provided by either of the disclosed arrangements is correlated with opacity in conformance with the TAPPI standard.
Abstract translation: 具体公开了一种用于测量片材的不透明度的方法和装置，更具体地说是用于根据TAPPI对比度定义测量纸张的不透明度。 来自造纸机或涂布机的移动的纸张通过光源和光电检测器之间的间隙。 透过纸张的光在被光电检测器接收之前通过蛋白石玻璃和带通滤光片的窗口。 蛋白石玻璃窗构成具有约20％至70％之间的有效反射率的部分反射体。 这产生了蛋白石玻璃与其旁边的纸之间的多次反射，具有足够的大小来补偿纸的反射率的透射率测量，从而自动校正仪器以改变纸张的组成。 由于带通滤波器，光电检测器基本上仅响应于光谱的可见部分中的光。 根据不使用蛋白石玻璃窗的另一公开的布置，通过使用第二光电检测器来响应于从光源所在的纸侧反射的光来补偿仪器。 然后将两个检测器的信号以简单的计算机布置组合以获得补偿纸的反射率的信号。 由所公开的布置中的任一个提供的补偿信号与符合TAPPI标准的不透明度相关。
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公开(公告)号：US3729632A
公开(公告)日：1973-04-24
申请号：US3729632D
申请日：1970-12-21
Applicant: INDUSTRIAL NUCLEONICS CORP
CPC classification number: G01B15/025
Abstract: A PENETRATING RADIATION GAUGE INCLUDES A PULSED X-RAY SOURCE FOR DETERMINING WALL THICKNESS OF ARTICLES MOVING PAST THE SOURCE. THE GUAGE IS CONTINUOUSLY STANDERDIZED BY RESPECTIVELY PLACING IN THE SOURCE RADIATION FIELD FIRST AND SECOND DIFFERENT STANDARD SAMPLES BETWEEN FIRST AND SECOND DIFFERENT PAIRS OF ADJACENT ARTICLES. A DETECTOR RESPONDS TO THE LEVEL OF RADIATION ABSORBED BY ARTICLES WHILE THICKNESS IN BEING MEASURED AND BY THE SAMPLES WHILE STANDARDIZATION IS BEING PERFORMED TO DERIVE AN OUTPUT SIGNAL EXPONENTIALLY RELATED TO THE RADIATION ABSOBPTION PROPERTIES OF THE ARTICLES AND SAMPLES. A LINEARIZING NETWORK RESPONSIVE TO THE DIRECTOR CONVERTS THE EXPONENTIAL RELATIONSHIP INTO A STRAIGHT LINE FUNCTION WHEREBY A LINEAR RELATIONSHIP BETWEEN THE MAGNITUDE OF THE DETECTOR OUTPUT SIGNAL AND THE ABSORPTION PROPERTY IS DERIVED. WHILE THE LINEARIZING NETWORK IS DERIVING A SIGNAL INDICATIVE OF THE RADIATION ABSORPTION PROPERTIES OF THE FIRST SAMPLE, THE STRAIGHT LINE RELATIONSHIP IS ADJUSTED SO THAT THE GAUGE RESPONSE IS A POINT ON THE LINE HAVING A PREDETERMINED OUTPUT SIGNAL CORRESPONDING WITH THE ABSORPTION PROPERTIES OF THE FIRST SAMPLES. WHILE THE LINEARIZING NETWORK IS DERIVING A SIGNAL INDICATIVE OF THE OBSORPTION PROPERTIES OF THE SECOND SAMPLES, THE SLOPE OF THE LINE ADJUSTED SO THAT THE GUAGE DERIVES AN OUTPUT SIGNAL HAVING A PREDETERMINED MAGNITUDE CORRESPONDING WITH THE OBSORPTION PROPERTIES OF THE SECOND SAMPLES
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