公开(公告)号：US4804853A

公开(公告)日：1989-02-14

申请号：US41795

申请日：1987-04-23

申请人： Peter Borden ,  Laszlo Szalai ,  Jon Munson

发明人： Peter Borden ,  Laszlo Szalai ,  Jon Munson

IPC分类号： G01N15/02 ,  G01N21/53

CPC分类号： G01N15/0205 ,  G01N2021/4707 ,  G01N21/53

摘要： A compact particle flux monitor is formed with an enclosure through which a laser beam is directed by a lens. An aperture in the enclosure allows free particles which are to be detected to pass through a sensing area at a limiting acceptance angle thereby providing an indication of direction of particle flow. Photodiodes mounted at the sensing area detect the particles, including relatively small particles, by means of the high intensity beam portion at the region of the focal point of the light beam. The response region along the diverging beam is relatively long so that the response as a function of particle size is above background noise level.

摘要翻译： 紧凑的粒子通量监视器形成有外壳，激光束通过该外壳由透镜引导。 外壳中的孔允许被检测的游离颗粒以限制的接受角度通过感测区域，从而提供颗粒流动方向的指示。 安装在感测区域的光电二极管通过在光束焦点的区域处的高强度光束部分来检测包括相对小的颗粒的颗粒。 沿着发散光束的响应区域相对较长，使得作为粒子尺寸的函数的响应高于背景噪声水平。

公开(公告)号：US4825094A

公开(公告)日：1989-04-25

申请号：US152198

申请日：1988-02-04

申请人： Peter Borden ,  Jon Munson

发明人： Peter Borden ,  Jon Munson

IPC分类号： G01N15/04 ,  G01N15/02 ,  G01N15/06 ,  G01N15/14 ,  G01N21/03 ,  G01N21/94

CPC分类号： G01N15/06 ,  G01N15/0227 ,  G01N21/031 ,  G01N21/94

摘要： An apparatus for monitoring particle fallout incorporates a particle flux monitor and a tubular structure. The tubular structure is positioned over an aperture in the housing of the monitor to provide a still air condition so that the particles that descend to the monitor and pass through the light net of the monitor are precluded from being carried back to the light net, which would result in an erroneous count.

公开(公告)号：US4894529A

公开(公告)日：1990-01-16

申请号：US267205

申请日：1988-11-03

申请人： Peter G. Borden ,  Jon Munson

发明人： Peter G. Borden ,  Jon Munson

IPC分类号： G01N15/00 ,  G01N15/02 ,  G01N15/06 ,  G01N15/10

CPC分类号： G01N15/10 ,  G01N2015/0053 ,  G01N2015/0238 ,  G01N2015/0681

摘要： A real-time particle counter apparatus for monitoring contaminant particles in liquids includes a nebulizer, a drying chamber and a counter. The nebulizer provides an aerosol of droplets containing particles to the drying chamber, and the droplets are evaporated leaving solid particles to be counted and sized by the counter. Liquid is recirculated in a closed loop by pumping means that moves the liquid between the liquid source and the nebulizer. A constant air flow containing particles is provided to the counter and the apparatus is self-regulating so that no operator is required to maintain the level of liquid in the nebulizer.

摘要翻译： 用于监测液体中的污染物颗粒的实时粒子计数装置包括雾化器，干燥室和计数器。 喷雾器提供含有颗粒的液滴的气溶胶到干燥室，并且蒸发出液滴，留下固体颗粒以通过计数器计数和定尺寸。 液体通过在液体源和雾化器之间移动液体的泵送装置在闭合回路中再循环。 包含颗粒的恒定空气流被提供给计数器，并且该装置是自调节的，因此不需要操作者来保持喷雾器中液体的水平。