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5118959 |
Water separation system for condensation particle counter
A continuous flow condensation particle counter employs a working fluid to saturate a gas stream, and then condense onto particles carried in the gas stream as the stream is directed through a...
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H001066 |
Airborne infrared transmissometer
The Airborne Infrared Transmissometer measures the infrared transmission between a test target aircraft and a detection system. A transmitter is attached to an aircraft and emits a calibrated...
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5107133 |
Reservoir chemical sensors with removable reservoir cells
A reservoir chemical sensor has a sensor body containing a reservoir cell channel around which source and detector are positioned within the cell body. A replaceable modular reservoir cell which...
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5087823 |
Device for determining the characteristics of particles in suspension in a liquid
A device for determining the characteristics of particles in suspension in a liquid, comprising a sampling device (2) for injecting samples of particles; a fractionator (3) for sorting those...
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5084629 |
Split flow uniform multisensor detection
An apparatus for detecting and counting particles in a gas stream flowing at a preselected rate, wherein the apparatus includes a multi-tier inlet manifold and a plurality of sensors. The inlet...
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5083014 |
Automatic focal-point adjustment method in flow imaging cytometer
A flow imaging cytometer for imaging the dimensions and shapes of particle components in a flow of a specimen solution employs a separate control solution, which is for managing precision,...
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5074629 |
Integrated variable focal length lens and its applications
A variable focal length lens integrated onto a silicon wafer. A light transmitting material such as gas or liquid is entrapped in a cavity in the wafer. The cavity has a flexible, light...
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5073719 |
Apparatus for the evaluation of the erythrosedimentation rate and other
An apparatus for measuring the erythrosedimentation rate and carrying out other similar analyses through photometric reading, comprises one or more seats (9, 11) for receiving test tubes (P)...
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5068542 |
Method and apparatus for concentration measurement by the quantity, diameter and convergent of a transmitted light beam
A concentration measuring method and an apparatus measures the concentration of an objective solvent in a mixed solution by flowing a mixed solution through a tube, transmitting light through the...
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5065025 |
Gas sample analysis provided by light pipe radiation structure
A gas cell for use in spectrometric analysis is disclosed, in which a series of pipes provide both the gas chamber and a light guide for infrared radiation which passes through the gas to...
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5059811 |
Turbidimeter having a baffle assembly for removing entrained gas
A turbidimeter includes a housing having a cavity with an inlet through which the fluid enters the bottom of the cavity, and an outlet through which the fluid exits the top of the cavity. A...
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5028790 |
Apparatus for full-system zero check and window soiling measurement and correction for transmissometers
The present invention relates to an apparatus which can be inserted between the stack and a transceiver of a transmissometer to provide zero and span measurements using the primary light source...
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5026993 |
Apparatus for monitoring settlement of a solid in a liquid, and a system incorporating same
The invention relates to an automatic apparatus, computer controlled, for monitoring the settlement of solids in a liquid, specifically sludge in effluent from a sewage treatment plant. The...
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5005005 |
Fiber optic probe system
A system for automatic and real time detection of the presence or absence of a substance in an environment by monitoring variations in light energy transmitted through an optical fiber having a...
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5002389 |
Pulsed fluorescence velocimeter
A noninvasive pulsed fluorescence gas velocimeter that determines dynamic parameters of a gas flow from detection of fluorescent re-radiation of excited molecules of the gas. The present invention...
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5003488 |
Automatic fluid sedimentation rate measurement apparatus and method
An apparatus and method for automatically measuring and recording erythrocyte sedimentation rates (ESR) of blood samples according to the Westergren method includes a controllable specimen device...
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4989942 |
Collimated light optrode
Light generated by an illumination source (26) travels through a fiber optic cable (40) to optrode (14) which is immersed in the process fluid (16) to be analyzed. The optrode collimates the light...
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4990794 |
Sensing-measuring device for continuous determination of cavitation in dynamic pumps
A sensing-measuring device for the continuous determination of cavitation in dynamic pumps, consisting of an optical probe mounted in proximity to the suction nozzle of the dynamic pump, said probe...
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4980571 |
Methods and apparatus for measuring sidestream smoke
Methods and apparatus for continuously and instantaneously measuring sidestream smoke are provided. A hood assembly is provided to fit over the ports of a conventional smoking machine. Sidestream...
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4976871 |
Method of monitoring flocculant effectiveness
Continuous monitor to determine effective performance of a flocculant used to dewater a sludge stream, in which a voltage waveform of water clarity, generated by a sensor opposed to a light beam...
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4967187 |
Method and apparatus for particle concentration detection using a cloud chamber
Method and apparatus for sampling the gaseous medium of a zone or area to determine the concentration, or changes in concentration, of submicron particles suspended in the gaseous medium of that...
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4943735 |
Apparatus for measuring concentration of liquid developer
Apparatus for measuring concentration of liquid developer or the like includes a holding member formed with an opening in which the liquid to be measured is retained. The holding member is driven...
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4940902 |
Apparatus and method for continuous measurement of suspended solids in a liquid medium with wiping means
An apparatus and method continuously samples and measures the changing concentration and/or density of suspended solids in a liquid medium without electrical connections at the submerged points in...
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4931774 |
Liquid-vapor change of phase detector
An apparatus for detecting a liquid-vapor change of phase in a fluid substance traveling through a conduit comprises a detector housing providing a path of travel for fluid and interposed in a...
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4929847 |
Rapid determination of sludge content and device therefor
A method for determining a sludge content in a heavy hydrocarbon oil and a device therefor are disclosed. The method comprises measuring absorbances of a heavy hydrocarbon oil sample, having an oil...
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4916325 |
Method and apparatus for the measurement of airborne fibres by the illumination of fibrous particles precipitated on a surface
Apparatus for measuring the quantity of fibres present in a gaseous fluid is based on the use of a nozzle to align the orientation of fibrous particles as they flow into a chamber. A charge is...
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4908676 |
Sensors for dissolved substances in fluids
The present invention comprises a simple multi-purpose on-line system for monitoring the concentration and/or the total amount of an organic analyte species or inorganic analyte species in an...
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4898462 |
Device for detecting a transmissivity of a substance
A device for detecting a transmissivity of a substance utilizing a transmitted light value, which comprises a light emitting element and a photo detecting element. The light emitting element and...
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4899053 |
Solid state non-dispersive IR analyzer using electrical current-modulated microsources
A non-dispersive infrared gas analyzer of the type typically used to measure concentrations of gases in medical and industrial applications has no moving parts and employs two or more miniature...
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4896047 |
Method and apparatus of periodically obtaining accurate opacity monitor readings of an exhaust gas stream
A method and apparatus for continually obtaining accurate opacity monitor readings of an exhaust gas stream (15) is disclosed. A conventional opacity monitor having a transmitter (10) and a...
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4891519 |
Photometering apparatus
A turbidimeter for measuring a turbidity of a test liquid including a hollow main body having openings formed at its lower end through which the test liquid is introduced into a measuring optical...
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4884065 |
Monitor for detecting tube position and air bubbles in tube
A device for use to detect air in a fluid line between a medication infusion reservoir such as an IV bottle or bag and an IV injection set or a medication infusion pump is disclosed which utilizes...
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4857750 |
Sensor for determining photoresist developer strength
An optical analyzer and a developer recirculation system is used to determine the amount of photoresist polymer dissolved in a quantity of developer solution and the sensor output signal is...
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4857430 |
Process and system for determining photoresist development endpoint by effluent analysis
A system and method for determining the pattern development endpoint of a photoresist polymer during spin/spray processing of a semiconductor wafer utilizes the optical transmission of the waster...
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4854158 |
Method and apparatus for leak testing a fluid containing chamber
A method and apparatus is disclosed for leak testing a fluid containing chamber wherein the chamber is pressurized with a gas and is submerged in liquid. The bubbles of gas rising from the...
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4851311 |
Process for determining photoresist develop time by optical transmission
A reflective beam of light is used to analyze the optical transmission properties of a developer fluid during puddle develop of photoresist polymer for detercting the process endpoint.
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4843247 |
Determination of asphaltene content and device therefor
A method for precisely and effectively determining an asphaltene content in a heavy hydrocarbon oil which can be applicable to a wider range of asphaltene content is disclosed. The method comprises...
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4839527 |
Optical-fibre smoke detection/analysis system
A sensor system for the detection and/or analysis of smoke, gas or the like, comprising a detection means 6 connected to an analyser means 2 via fiber-optic links 3, 11 and 12. The detector 6...
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4834533 |
Measuring the refractive index of liquid
An apparatus for measuring the refractive index of liquid particularly suitable for use in an ink-jet printing system is provided. The apparatus includes a light emitting diode and a photodiode...
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4825094 |
Real time particle fallout monitor with tubular structure
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...
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4823015 |
Electrical interference free projected beam smoke detector
A controller including a processor is coupled to a transceiver head pair respectively operative as a transmitter and as a receiver of infrared energy to controllably project a beam of infrared...
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4816695 |
Optical fluid detector
An optical fluid detector (10) has an opaque housing (12). There is a first passage (14) through the housing (12) to receive a transparent, flexible plastic tube (50). A second passage (20) through...
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4807990 |
Laser fluorescence velocimeter
A method and apparatus are disclosed for measuring a velocity component of a moving fluid. Coherent light at two different wavelengths is directed into the moving fluid to create a space-and-time...
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4798965 |
Optical autocollimation measuring apparatus
An optical autocollimation measuring apparatus has a light transmitter-receiver arranged in a housing (15). An image of the light source (11) is formed in the objective (12) by a condensor (9)...
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4794266 |
Method and apparatus for light transmission measurement by sending light, measuring received light and computing transmittance
Measurement equipment based on the measurement of light transmission are plagued by changing characteristics of protective glass surfaces due to contamination or other factors. In a method, light...
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4760272 |
Optical precipitation detection and identification system using scintillation detection
A weather identification system is provided for remotely detecting precipitation and for determining the nature of precipitation in an open environment, as at an aircraft landing field. The system...
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4754149 |
Optical precipitation gauge which detects scintillations produced by particle movement in the light beam
A precipitation gauge is provided for remotely detecting precipitation and for measuring the rate of precipitation in an open environment, such as an aircraft landing field. The system employs an...
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4752131 |
Laser-optical arrangement for measuring the degree of dispersion in flowing systems
In a laser-optical arrangement for producing signals by light scattering, obscuration or reflection, from flowing particles and/or groups of particles, which are recorded, as time-dependent...
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4749871 |
Self-diagnostic projected-beam smoke detector
A modular transceiver head including cooperative cover and base members operable as a transmitter or as a receiver of infrared energy. A controller including a processor is coupled to a transceiver...
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4748336 |
Optical dust detector assembly for use in an automotive vehicle
An optical dust detector assembly includes an air duct member having an introductory portion and a base portion for permitting a flow of air passing therethrough, the duct member having a pair of...
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