Matches 1 - 17 out of 17
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7265832 Optical flow meter for measuring gases and liquids in pipelines  
An optical system design for measuring the velocity of fluids flowing through pipes or other conduits is disclosed. The optical system is comprised of a means for delivering two beams through a...
6938495 Method of measuring fluid flow  
In the method for measuring the velocity of fluid or visualizing the distribution of fluid by feeding tracer particles to the fluid, irradiating the fluid with light and observing return light from...
6683679 Optical flow monitor  
An optical flow monitor. Fluid flow is determined by correlating two interference signals produced by coherent laser beams passing through a flowing fluid at two spaced-apart paths. The distance...
6580845 Method and device for switching wavelength division multiplexed optical signals using emitter arrays  
A switch device and method is disclosed that is capable of switching wavelength division multiplexed optical signals. The device comprises a switch element, which may include a detector, an emitter...
6414748 Method for measuring the flow of fluids  
The disclosed method of measuring the flow of a fluid with a porous particulate ceramic tracer and an optical instrument is characterized in that spherical particles having diameters in the range...
6276217 Method of measuring fluid flow by analyzing the fluorescent emissions of tracer particles in the fluid  
In the method for measuring the velocity of fluid or visualizing the distribution of fluid by feeding tracer particles to the fluid, irradiating the fluid with light and observing return light from...
6134001 Fluid diagnostic technique  
A non-obstructive fluid diagnostic technique is described which enables the measurement of different parameters in a fluid. The diagnostic technique includes the steps of focusing a laser (10) in a...
5982478 Fluid velocity measurement apparatus  
Fluid velocity measurement apparatus which utilizes Doppler-shift spectral analysis includes a narrow line width light source, the light from which passes through a beam expander to provide an...
5979245 Method of measuring fluid flow by analyzing the fluorescent emissions from tracer particles in the fluid  
In the method for measuring the velocity of fluid or visualizing the distribution of fluid by feeding tracer particles to the fluid, irradiating the fluid with light and observing return light from...
EP0947826A2 Technique for investigating gases  
A non-obtrusive fluid diagnostic technique is described which enables the measurement of different parameters in a fluid. The diagnostic technique comprises the steps of focusing a laser (10) in a...
5859704 Superficial laser induced fluorescence  
A method of superficial laser induced fluorescence for measuring film cooling performance within a fluid tunnel apparatus includes the step of introducing a test fluid uniformly dyed with a...
5812248 Process and device for generating graphical real-time directional information for detected object traces  
A process and apparatus are disclosed for generating object traces representing the movement of objects through a measuring space. The measuring space can be illuminated by a laser or other light...
5708495 Method and apparatus for determining the velocity of a gas flow  
A method and apparatus for measuring the velocity of a gas flow that does not require the seeding of the flow is disclosed. The method and apparatus produce a population of stable molecules within...
5491642 CCD based particle image direction and zero velocity resolver  
A PIV system provides a bias velocity component to each flow field speckle pattern recorded on a video array by rastering each corresponding recorded electrical image pattern by a select number of...
5469250 Passive optical wind profilometer  
The passive wind profilometer measures wind transverse to a line of sight as a function of range. Schlieren which are natural occurrences in wind act as refracting lenses which move along with the...
5440144 Apparatus for the three-dimensional determination of flows  
An apparatus for the three-dimensional determination of flows has a light source for briefly illuminating a light section (3) and a stereoscopic recording device (10). The stereoscopic recording...
5333044 Fluorescent image tracking velocimeter  
A multiple-exposure fluorescent image tracking velocimeter (FITV) detects and measures the motion (trajectory, direction and velocity) of small particles close to light scattering surfaces. The...
Matches 1 - 17 out of 17