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7593101 |
High-pressure cross-polar microscopy cells having adjustable fluid passage and methods of use
Apparatus and methods are described for observing samples at non-ambient temperatures and pressures. One apparatus comprises a cell body having a fluid flow-through passage and a light passage...
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6867861 |
Method and apparatus for characterizing the color properties of fluids
An apparatus for inspection of fluids, particularly dispersions and tints, having a fluid analysis cell with a cavity therein defining a fluid analysis chamber, fluid inlet and outlets extending...
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6507397 |
Automatic color-tone test device and automatic controlling system for dye liquor
An automatic color-tone test device comprises: a measurement cell 4 to which there are communication-connected dye liquor introduction tubes 16, 18 for passing through a controlling dye liquor...
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5905271 |
Inline optical sensor with vernier pathlength adjustment and photometric calibration
Inline optical sensor having first and second optically transmissive windows positioned on opposite sides of a product stream. A light source is positioned outside the first window for directing...
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5689446 |
Foot contour digitizer
Apparatus for determining a contour of the underside of a person's foot includes an array of gauge pins supported by a first support structure and disposed in spaced relation for independent,...
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5528036 |
Spectral detection of contaminants in containers
To spectrally detect a contaminant in a moving container, a set of reference spectral information related to one or more containers having known contents is stored. Thereafter, radiant energy is...
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4786171 |
Spectral analysis apparatus and method
Apparatus and method for measuring the absorbance of fluid samples. The length of the light path through the sample is adjusted to optimize the amount of light absorbed by the sample, and the...
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4762798 |
Device and method for determining a characteristic of a fluid sample
A device and method for determining characteristics of a fluid sample using optical measurements and changing the optical density range of a sample, e.g., for the second of two required measurements.
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4519710 |
Colorimeter
A colorimeter for continuously monitoring the concentration of an ionic species in an aqueous solution comprises a source 30 of optical radiation, a flow cell 10 including three flow chambers 11,...
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4099882 |
Apparatus for optically analyzing fluids
In optical analysis of fluids a method and an apparatus are described by which it is possible to continuously measure the concentration value of the fluid within a very broad range of concentration...
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4023909 |
Null balance alphameter
An alphameter provides an indication of the volume absorption coefficient d the small angle forward scattering coefficient to give an indication of underwater visibility. A laser beam is...
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3843269 |
PROCESS AND APPARATUS FOR PHOTOMETRIC DETERMINATION OF THE EXTINCTION OF A SAMPLE
A process and apparatus for photometric determination of the extinction of a sample with a photoelectric measuring instrument. The radiation to be measured strikes the photoelectric receiver only...
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3817625 |
PHOTO ELECTRICAL SENSOR
A sensor providing an output as a function of the degree of deviation of a condition from a predetermined initial condition. The sensor consists of a housing for a pair of communicating columns of...
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3797942 |
METHOD AND APPARATUS FOR ANALYSIS BY LIGHT ABSORPTION SPECTROMETRY
The invention relates to the analysis of gas by light absorption, suitable for use in analysing the exhaust gasses of automobile engines. The device comprises a tank receiving the gas to be...
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3229565 |
Optical colorimetric comparison device
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3218908 |
Adjustable optical prism field splitter
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2912895 |
Spectrophotometry process
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3565529 |
Title is not available
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3592605 |
Title is not available
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