The disclosed subject-matter discloses systems and methods to calibrate or compare particle monitors. In one example, the disclosed subject-matter includes a sample-fluid source to provide test particles to at least one particle instrument under test. A mixing component is coupled upstream of the at least one particle instrument under test. Aa junction component, having a first-inlet port to be coupled to a first- fluid supply, and a second-inlet port to receive test particles from the sample-fluid source. The junction component mixes a fluid received from the first-fluid supply and the test particles received from the sample-fluid source prior to transporting through the outlet to the mixed fluid to mixing coil. Other apparatuses and methods are disclosed.
In various embodiments, the disclosed subject-matter is a system and a method for detecting particle impurities in an ultra-pure water (UPW) system in substantially real-time. The method for detecting particle impurities may be performed continuously. An example of a system includes a liquid particle- detection system having an atomizer coupled fluidically to a plurality of operable valves, which are to be coupled downstream from a separate one of a plurality of processing stages in the UPW system. The atomizer produces a spray of liquid from a selected and opened one of the operable valves through which a water sample is provided. At least one particle counter provides at least one parameter, in substantially real-time, selected from a particle count and a particle concentration, from the processing stage to which the atomizer is coupled. Other systems and methods are disclosed.
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Washers for particle impactors. Apparatus for depositing particles on semiconductor wafers;
semiconductor process vapor filters. Liquid flow controllers; sample recovery systems for
particle impactors (term considered too vague by the
International Bureau pursuant to Rule 13 (2) (b) of the
Regulations); pharmaceutical particle impactors (term
considered too vague by the International Bureau pursuant to
Rule 13 (2) (b) of the Regulations); ultrapure water monitor
and apparatus for deposition of particles within ultrapure
water (term considered too vague by the International Bureau
pursuant to Rule 13 (2) (b) of the Regulations). Vaporizers.
A seed dispensing system is provided with a photoelectric sensor for monitoring the dispensing of seeds from a seed dispenser comprising a discharge conveyor with conveyor flights that transport seeds through the seed dispenser. The sensor outputs a signal representative of obstructions to the flow of light in an optical path of the sensor, and a computing unit is adapted to distinguish portions of the output signal that are attributable to the passage of one or more seeds from portions of the output signal that are attributable to the passage of a conveyor flight.
09 - Scientific and electric apparatus and instruments
Goods & Services
Gas and liquid flow and temperature sensors; laser
velocimetry units and parts therefor; optical components for
laser velocimetry units; lasers; signal processors,
computers; computer interface units and computer programs
for use with gas or liquid flow measurement apparatus,
namely, for collecting, processing, analyzing, storing, and
presenting data from gas or liquid flow measuring
instruments; preamplifiers; polarization axis finders;
frequency shifters; hot wire and hot film anemometers;
anemometry instruments and parts therefor; computer programs
and interface units for use with anemometers, namely, for
collecting, processing, analyzing, storing, and presenting
data from anemometers and anemometry instruments; anemometer
probes and sensors; manometers; gas flow and velocity test
instruments; mass flow transducers; air velocity
transducers, signal conditioners, air velocity meters; air
velocity meter calibrators; wind velocity sensors;
intelligent flow analyzers featuring microchips, for
measuring flow rate and accumulation of liquids and gases;
air pollution measuring and/or control instruments; aerosol
neutralizers; condensation nucleus counters; electrical
classifiers; electrostatic aerosol samplers; isokinetic dust
samplers; electronic respirable aerosol mass monitors;
particle impactors; computer programs and interface units
for use with particle technology instruments, namely, for
collecting, processing, analyzing, storing, and presenting
data from instruments measuring particle size and/or
concentration; measurement instruments for use in
determining aerodynamic particle size; optical particle
counters; differential mobility particle size analyzers;
fume hood controllers; monitors for measuring the velocity
of particles moving in a media; surface motion monitors;
room pressure sensors; room pressure controllers; wind
tunnels; flow calibrators; mass flow meters; ventilator test
instruments; condensation particle counters; surface area
monitors; lung deposition monitors, namely, an aerosol
characterization device used to infer inhaled particulate
uprate, not for medical purposes; mass flow meters to
measure air flow in exposure monitoring applications;
electronic instrumentation used in industrial hygiene and
occupational exposure monitoring applications; in situ
particle sizing instruments; phase doppler particle
analyzers; planar laser induced fluorescent instruments;
microscale particle image velocimetry instruments;
multi-phase flow measurement instruments; velocity
measurement devices; laser doppler velocimeters;
nanoparticle/macromolecule generator.
There is disclosed a handheld air flow velocity measurement probe that includes a bridge circuit assembly having an airflow velocity sensor that is a resistance temperature detector (RTD) and a digitally controlled resistive element to dynamically adjust and maintain the resistance of the velocity sensor within the overheat temperature predefined range. The velocity measurement also uses a separate temperature sensor to sense the temperature of the air or gas flow. A humidity sensor is also included remote from the other sensors to measure humidity in the gas flow to be measured. All of the above described components are housed at a probe tip instead of a base as in most standard handheld probes and the digital interface at the probe tip allows the user to replace a bulky, expensive telescoping antenna with stackable extender scheme.
G01K 13/02 - Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
F01D 17/08 - Arrangement of sensing elements responsive to condition of working fluid, e.g. pressure
G01K 1/14 - SupportsFastening devicesArrangements for mounting thermometers in particular locations
G01P 5/12 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
09 - Scientific and electric apparatus and instruments
Goods & Services
Photometers; air quality measurement apparatus, namely,
particle counters; accessories and replacement parts for
photometers and particle counters, namely, autozero modules,
inlet caps, batteries, pumps, filters, calibration devices,
mounts, solar panels for production of electricity, power
supplies, and cascade impactors; downloadable computer
application software for mobile phones, namely, software for
viewing and downloading data from aerosol monitoring
instruments.
09 - Scientific and electric apparatus and instruments
Goods & Services
Handheld test instrument with swappable sensors for the
measurement of particulate matter, air velocity,
temperature, humidity, differential pressure, TVOC, noise,
and heat stress.
09 - Scientific and electric apparatus and instruments
Goods & Services
Gas and liquid flow and temperature sensors; laser
velocimetry units and parts therefor; optical components for
laser velocimetry units; lasers; signal processors,
computers; computer interface units and computer programs
for use with gas or liquid flow measurement apparatus,
namely, for collecting, processing, analyzing, storing, and
presenting data from gas or liquid flow measuring
instruments; preamplifiers; polarization axis finders;
frequency shifters; hot wire and hot film anemometers;
anemometry instruments and parts therefor; computer programs
and interface units for use with anemometers, namely, for
collecting, processing, analyzing, storing, and presenting
data from anemometers and anemometry instruments; anemometer
probes and sensors; manometers; gas flow and velocity test
instruments; mass flow transducers; air velocity
transducers, signal conditioners, air velocity meters; air
velocity meter calibrators; wind velocity sensors;
intelligent flow analyzers featuring microchips, for
measuring flow rate and accumulation of liquids and gases;
air pollution measuring and/or control instruments; aerosol
neutralizers; condensation nucleus counters; electrical
classifiers; electrostatic aerosol samplers; isokinetic dust
samplers; electronic respirable aerosol mass monitors;
particle impactors; computer programs and interface units
for use with particle technology instruments, namely, for
collecting, processing, analyzing, storing, and presenting
data from instruments measuring particle size and/or
concentration; measurement instruments for use in
determining aerodynamic particle size; optical particle
counters; differential mobility particle size analyzers;
fume hood controllers; monitors for measuring the velocity
of particles moving in a media; surface motion monitors;
room pressure sensors; room pressure controllers; wind
tunnels; flow calibrators; mass flow meters; ventilator test
instruments; condensation particle counters; surface area
monitors; lung deposition monitors, namely, an aerosol
characterization device used to infer inhaled particulate
uprate; mass flow meters to measure air flow in exposure
monitoring applications; electronic instrumentation used in
industrial hygiene and occupational exposure monitoring
applications; in situ particle sizing instruments; phase
doppler particle analyzers; planar laser induced fluorescent
instruments; microscale particle image velocimetry
instruments; multi-phase flow measurement instruments;
velocity measurement devices; laser doppler velocimeters;
nanoparticle/macromolecule generators.
01 - Chemical and biological materials for industrial, scientific and agricultural use
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Gas and liquid flow and temperature sensors; laser velocimetry units and parts therefor; optical components for laser velocimetry units; lasers; signal processors, computers; computer interface units and computer programs for use with gas or liquid flow measurement apparatus, namely, for collecting, processing, analyzing, storing, and presenting data from gas or liquid flow measuring instruments; preamplifiers; polarization axis finders; frequency shifters; hot wire and hot film anemometers; anemometry instruments and parts therefor; computer programs and interface units for use with anemometers, namely, for collecting, processing, analyzing, storing, and presenting data from anemometers and anemometry instruments; anemometer probes and sensors; manometers; gas flow and velocity test instruments; mass flow transducers; air velocity transducers, signal conditioners, air velocity meters; air velocity meter calibrators; wind velocity sensors; intelligent flow analyzers featuring microchips, for measuring flow rate and accumulation of liquids and gases; air pollution measuring and/or control instruments; aerosol neutralizers; condensation nucleus counters; electrical classifiers; electrostatic aerosol samplers; isokinetic dust samplers; electronic respirable aerosol mass monitors; particle impactors; computer programs and interface units for use with particle technology instruments, namely, for collecting, processing, analyzing, storing, and presenting data from instruments measuring particle size and/or concentration; measurement instruments for use in determining aerodynamic particle size; optical particle counters; differential mobility particle size analyzers; fume hood controllers; monitors for measuring the velocity of particles moving in a media; surface motion monitors; room pressure sensors; room pressure controllers; wind tunnels; flow calibrators; mass flow meters; ventilator test instruments; condensation particle counters; surface area monitors; lung deposition monitors, namely, an aerosol characterization device used to infer inhaled particulate uprate; mass flow meters to measure air flow in exposure monitoring applications; electronic instrumentation used in industrial hygiene and occupational exposure monitoring applications; in situ particle sizing instruments; phase doppler particle analyzers; planar laser induced fluorescent instruments; microscale particle image velocimetry instruments; multi-phase flow measurement instruments; velocity measurement devices; laser doppler velocimeters; nanoparticle/macromolecule generator
13.
SYSTEMS AND METHODS FOR ASSESSING AND MITIGATING PERSONAL HEALTH HAZARDS IN AN INDOOR ENVIRONMENT FOR A PLURALITY OF OCCUPANTS
A system and a method include receiving from environmental sensors, environmental output data measurements. The environmental sensors are located at a site location. A health impact scoring algorithm computes a plurality of health impact scores from the environmental output data measurements. An overall health impact score at the site location is computed from the health impact score having a lowest value. A machine learning model generates a personal recommendation for reducing a health impact from a verified environmental hazard type to each occupant in the site location. At least one of: the overall health impact score, the at least one verified environmental hazard type, the occupant exposure time, or the personal recommendation are displayed on a computing device. An instruction is sent to environment-controlling equipment located at the site location to change an operational parameter of the environment-controlling equipment to mitigate the at least one verified environmental hazard type.
G16H 50/30 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for calculating health indicesICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for individual health risk assessment
G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
G16H 15/00 - ICT specially adapted for medical reports, e.g. generation or transmission thereof
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Handheld test instrument with swappable sensors for the measurement of particulate matter, air velocity, temperature, humidity, differential pressure, TVOC, noise, and heat stress.
16.
FLOW CONTROL AND MEASUREMENT THROUGH PARTICLE COUNTERS
Disclosed herein are systems and methods for measuring and controlling a flow rate through a particle counter or active air sampler. As disclosed herein, a fluid flows through a venturi tube and an orifice in the system at a predetermine velocity. A pressure differential between an inlet of the instrument and a throat section of the venturi tube is measured. The flow rate through the system can be determined based on the pressure differential and an intensive property of the fluid. An alarm can be activated when the flow rate is outside of a flow rate range.
G01F 1/36 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
G01N 1/22 - Devices for withdrawing samples in the gaseous state
G01N 15/14 - Optical investigation techniques, e.g. flow cytometry
Disclosed herein are systems and methods for measuring and controlling a flow rate through a particle counter or active air sampler. As disclosed herein, a flow is created within a conduit fluidly connected to an instrument at a first velocity. An inlet pressure at an inlet of the instrument and an ambient pressure proximate the instrument are measured. The flow rate through the instrument is determined based on a pressure differential between the inlet pressure and the ambient pressure. The flow rate is increased or decreased when the flow rate is outside a flow rate range.
09 - Scientific and electric apparatus and instruments
Goods & Services
Gas sensors for measuring gas concentration; Gas flow meters; Gas temperature sensors; liquid flow and temperature sensors; laser velocimetry units and replacement and structural parts therefor; optical components for laser velocimetry units; lasers for measuring; signal processors; computers; computer interface units and downloadable computer programs for use with gas or liquid flow measurement apparatus, namely, for collecting, processing, analyzing, storing, and presenting data from gas or liquid flow measuring instruments; preamplifiers; Laboratory apparatus and instruments, namely, polarization axis finders; frequency shifters; hot wire and hot film anemometers; anemometry instruments and replacement and structural parts therefor; downloadable computer programs and interface units for use with anemometers, namely, for collecting, processing, analyzing, storing, and presenting data from anemometers and anemometry instruments; anemometer probes and sensors; manometers being pressure gauges; gas flow and velocity test instruments; Flow meters, namely, mass flow transducers; Velocity measuring instruments, namely, air velocity transducers; signal conditioning devices for industrial process control; air velocity meters; air velocity meter calibrators; wind velocity sensors; intelligent flow analyzers featuring microchips, for measuring flow rate and accumulation of liquids and gases; air pollution measuring and control instruments, namely, particle counters; Laboratory apparatus and instruments, namely, aerosol neutralizers; Air quality measurement apparatus, namely, condensation nucleus counters; Laboratory apparatus and instruments, namely, electrical classifiers; Air quality measurement apparatus, namely, electrostatic aerosol samplers; Air quality measurement apparatus, namely, isokinetic dust samplers; Laboratory apparatus and instruments, namely, electronic respirable aerosol mass monitors; Laboratory apparatus and instruments, namely, particle impactors; Downloadable computer programs and interface units for use with particle technology instruments, namely, for collecting, processing, analyzing, storing, and presenting data from instruments measuring particle size and/or concentration; measurement instruments for use in determining aerodynamic particle size; Air quality measurement apparatus, namely, optical particle counters; Laboratory apparatus and instruments, namely, differential mobility particle size analyzers; fume hood controllers; monitors for measuring the velocity of particles moving in a media; surface motion monitors, namely motion sensors; room pressure sensors; room pressure controllers; bench top wind tunnels for scientific, laboratory, and general research uses; flow calibrators for measuring air flow rates; mass flow meters; ventilator test instruments; Air quality measurement apparatus, namely, condensation particle counters; surface area monitors for measuring surface area of nanoparticle aerosols; lung deposition monitors, namely, an aerosol characterization device used to infer inhaled particulate uprate for scientific, laboratory, and general research uses; mass flow meters to measure air flow in exposure monitoring applications; electronic instrumentation used in industrial hygiene and occupational exposure monitoring applications; in situ particle sizing instruments; phase doppler particle analyzers being measuring instruments; planar laser induced fluorescent measuring instruments; microscale particle image velocimetry instruments; multi-phase flow measurement instruments; velocity measurement devices; laser doppler velocimeters; Laboratory apparatus and instruments, namely, nanoparticle/macromolecule generators
09 - Scientific and electric apparatus and instruments
Goods & Services
Gas sensors for measuring gas concentration; gas flow meters; gas temperature sensors; liquid flow and temperature sensors; lasers for measuring; signal processors; computers; preamplifiers; laboratory apparatus and instruments, namely, polarization axis finders; downloadable computer programs and interface units for use with anemometers, namely, for collecting, processing, analyzing, storing, and presenting data from anemometers and anemometry instruments; manometers being pressure gauges; gas flow and velocity test instruments, namely, flow measuring instruments; flow meters, namely, mass flow transducers; velocity measuring instruments, namely, air velocity transducers; signal conditioning devices for industrial process control; air velocity meters; air velocity meter calibrators; wind velocity sensors; intelligent flow analyzers featuring microchips, for measuring flow rate and accumulation of liquids and gases; air pollution measuring and control instruments, namely, particle counters; laboratory apparatus and instruments, namely, aerosol neutralizers; air quality measurement apparatus, namely, condensation nucleus counters; laboratory apparatus and instruments, namely, electrical classifiers; air quality measurement apparatus, namely, electrostatic aerosol samplers; air quality measurement apparatus, namely, isokinetic dust samplers; laboratory apparatus and instruments, namely, electronic respirable aerosol mass monitors; laboratory apparatus and instruments, namely, particle impactors; computer programs and interface units for use with particle technology instruments, namely, for collecting, processing, analyzing, storing, and presenting data from instruments measuring particle size and/or concentration; measurement instruments for use in determining aerodynamic particle size; clean room air quality measurement apparatus, namely, particle counters; air quality measurement apparatus, namely, optical particle counters; laboratory apparatus and instruments, namely, differential mobility particle size analyzers; fume hood controllers; monitors for measuring the velocity of particles moving in a media; surface motion monitors, namely, motion sensors; room pressure sensors; room pressure controllers; bench top wind tunnels for scientific, laboratory, and general research uses; flow calibrators for measuring air flow rates; mass flow meters; ventilator test instruments; air quality measurement apparatus, namely, condensation particle counters; surface area monitors for measuring surface area of nanoparticle aerosols; lung deposition monitors, namely, an aerosol characterization device used to infer inhaled particulate uprate for scientific, laboratory, and general research uses; mass flow meters to measure air flow in exposure monitoring applications; electronic instrumentation used in industrial hygiene and occupational exposure monitoring applications; in situ particle sizing instruments; velocity measurement devices; laboratory apparatus and instruments, namely, nanoparticle/macromolecule generators; aerosol and dust monitors for measuring dust in the air; generators and dispensers, namely, powder generators, fluidized bed aerosol generators, and dust aerosol generators for dispensing dry dust and powders, and seed aerosol generators and oil droplet generators for aerosol testing, production, and research; sound level meters and detectors; hospital room pressure monitors, namely, environmental monitoring systems comprised of meters and sensors that measure room pressure, airflow, and pressure direction and includes alarm and reporting functions; heat stress monitor, namely, heat detection systems that measure air temperature, humidity, radiant heat, and air movement; airflow air capture hood, namely, an air quality measurement apparatus used to direct airflow through registers, diffusers and grilles for measurement of air volume; noise indicator, namely, noise level meters; laboratory room HVAC controller, namely, electronic monitors to collect and control operational data and settings, including temperature data and settings, for HVAC equipment; fume hood monitor for measuring gases in ventilation hoods; environmental monitor, namely, air quality measurement apparatus, namely, particle counters; noise dosimeter; capture hood being an air quality measurement apparatus used to direct airflow through registers, diffusers and grilles for measurement of air volume; ventilation meter being an air quality measurement apparatus to measure air velocity, temperature, relative humidity, carbon monoxide and carbon dioxide; laser photometer; aerosol monitor for measuring gases; Environmental monitoring instrument, namely, an electronic air quality monitor used to analyze and report air quality and composition; vaporizers for scientific, laboratory, and general research uses; computer cables
41 - Education, entertainment, sporting and cultural services
Goods & Services
Providing online non-downloadable videos in the field of respirator fit testing and filter testing; education services, namely, providing non-downloadable webinars in the fields of aerosols and nanoparticles, environmental air monitoring, automotive and engine emission, particle counting, particle sizing, indoor ventilation and health effects, testing home healthcare devices, and pharmaceutical manufacturing; conducting seminars in the field of aerosol science
09 - Scientific and electric apparatus and instruments
Goods & Services
apparatus for precursor vapor generation and delivery associated semiconductor processes (CVD/ALD) consisting of liquid flow controllers, vaporizers, and vapor filters. Apparatus and services for semiconductor defect inspection tools consisting of wafer and lithography mask defect standards and tools to produce such standards. Apparatus to monitor particles in ultrapure water and process liquids and the subsequent deposition of particles onto a wafer. Laboratory sample recovery systems and apparatus for pharmaceutical aerosolized medicine testing namely particle impactors, breath simulators, sample recovery and test automation products
09 - Scientific and electric apparatus and instruments
Goods & Services
Photometers; air quality measurement apparatus, namely, particle counters; accessories and replacement parts for photometers and particle counters, namely, autozero modules being calibration devices, replacement metal and non-metal inlet caps, batteries, replacement pumps, replacement filters, calibration devices, mounts, solar panels for production of electricity, power supplies, and cascade impactors being devices that measure and classify particle size and particle size distribution; downloadable computer application software for mobile phones, namely, software for viewing and downloading data from aerosol monitoring instruments
09 - Scientific and electric apparatus and instruments
Goods & Services
Handheld test instrument with swappable sensors for the measurement of particulate matter, air velocity, temperature, humidity, differential pressure, Volatile Organic Compounds (VOC), noise, and heat stress
42 - Scientific, technological and industrial services, research and design
Goods & Services
Technical indoor air quality monitoring services; product quality evaluation, namely, evaluating and testing the indoor air quality and impact of consumer products of others using software technology to monitor the readings of indoor air quality Technical indoor air quality monitoring services; product quality evaluation, namely, evaluating and testing the indoor air quality and impact of consumer products of others using software technology to monitor the readings of indoor air quality
A system and a method include receiving, by a processor, from environmental sensors, environmental output data measurements. The environmental sensors are located at a site location. An health impact scoring algorithm computes a plurality of health impact scores from the environmental output data measurements. An overall health impact score at the site location is computed from the any of the health impact scores having a lowest value. A machine learning model generates at least one recommendation for remediating at least one verified environmental hazard type. At least one of the overall health impact score, the at least one verified environmental hazard type, or the at least one recommendation are displayed on a computing device. An instruction is sent to environment-controlling equipment located at the site location to change an operational parameter of the environment-controlling equipment to mitigate the at least one verified environmental hazard type.
A fluid system includes a capillary and a first and second temperature sensor, a first and second pressure sensor, and a processor coupled to the sensors. The processor is configured to execute instructions to determine an output using the sensor data and using fluid parameter data received via an interface coupled to the processor. The processor is coupled to a control in fluid communication with the capillary.
A fluid system includes a capillary and a first and second temperature sensor, a first and second pressure sensor, and a processor coupled to the sensors. The processor is configured to execute instructions to determine an output using the sensor data and using fluid parameter data received via an interface coupled to the processor. The processor is coupled to a control in fluid communication with the capillary.
G01F 1/88 - Indirect mass flowmeters, e.g. measuring volume flow and density, temperature, or pressure with differential-pressure measurement to determine the volume flow
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
G01F 1/36 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
G01F 1/37 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of communicating tubes or reservoirs with movable fluid levels, e.g. by U-tubes
G01F 1/38 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule
G01F 1/48 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by a capillary element
G01F 1/76 - Devices for measuring mass flow of a fluid or a fluent solid material
Disclosed are systems and methods for measuring flowrates. The systems and methods may include passing a fluid from a unit under test into a cavity. The pressure of the fluid within the cavity may be measure and a slidable element located within the cavity may be repositioned to maintain a desired pressure within the cavity. The distance traveled by the slidable element in order to maintain the desired pressure may be determined along with a time for the slidable element to travel the distance. Using the distance traveled by the slidable element, a crosssectional area of the slidable element in contact with the fluid, and the time for the slidable element to travel the distance the volumetric flowrate for the fluid may be determined.
G01F 25/10 - Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
G01F 3/16 - Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls comprising reciprocating pistons, e.g. reciprocating in a rotating body in stationary cylinders
Various embodiments include an exemplary design of a high-temperature condensation particle counter (HT-CPC) having particle-counting statistics that are greatly improved over prior art systems since the sample flow of the disclosed HT-CPC is at least eight times greater than the prior art systems. In one embodiment, the HT-CPC includes a saturator block to accept directly a sampled particle-laden gas flow, a condenser block located downstream and in fluid communication with the saturator block, an optics block located downstream and in fluid communication with the condenser block, and a makeup-flow block having a concentric-tube design located in fluid communication with and between the condenser block and the optics block. The makeup-flow block being configured to reduce volatile contents from re-nucleating in the optics block. Other designs and apparatuses are disclosed.
A measurement system includes an atomizer, an impactor, a particle counter, and a discharge reservoir. The atomizer has a liquid intake port and a gas intake port configured to aerosolize a liquid received at the liquid intake port. The impactor has an inlet coupled to the atomizer and has a first output port and a second output port. The impactor is configured to separate droplets wherein those droplets smaller than a selected cut point are directed to the first output port and those droplets larger than the selected cut point are directed to the second output port. The particle counter is coupled to the first output port and is configured to count particles larger than at least one particle size cut point. The discharge reservoir is coupled to the second output port.
G01N 15/06 - Investigating concentration of particle suspensions
B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
G01F 23/263 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
G01N 15/02 - Investigating particle size or size distribution
A measurement system includes an atomizer, an impactor, a particle counter, and a discharge reservoir. The atomizer has a liquid intake port and a gas intake port configured to aerosolize a liquid received at the liquid intake port. The impactor has an inlet coupled to the atomizer and has a first output port and a second output port. The impactor is configured to separate droplets wherein those droplets smaller than a selected cut point are directed to the first output port and those droplets larger than the selected cut point are directed to the second output port. The particle counter is coupled to the first output port and is configured to count particles larger than at least one particle size cut point. The discharge reservoir is coupled to the second output port.
A system and a method include receiving, by a processor, from environmental sensors, environmental output data measurements. The environmental sensors are located at a site location. An health impact scoring algorithm computes a plurality of health impact scores from the environmental output data measurements. An overall health impact score at the site location is computed from the any of the health impact scores having a lowest value. A machine learning model generates at least one recommendation for remediating at least one verified environmental hazard type. At least one of the overall health impact score, the at least one verified environmental hazard type, or the at least one recommendation are displayed on a computing device. An instruction is sent to environment-controlling equipment located at the site location to change an operational parameter of the environment-controlling equipment to mitigate the at least one verified environmental hazard type.
Various embodiments include an exemplary apparatus and method for insitu calibration of multiple flow-sensing devices within a dilution system. In one example, a calibration and dilution system includes a first mass-flow device to serve as a global reference, a second mass-flow device configured to be coupled to and provide a supply of clean gas to a primary diluter, and a third mass-flow device configured to be coupled to and provide a supply of clean gas to a secondary diluter, where the diluters are pneumatically coupled to one another through a gas-supply line. Multiple valves are coupled to at least the mass-flow devices and the diluters. The calibration and dilution system is arranged so that the mass-flow controllers can be calibrated in-situ without having to remove any of the mass-flow controllers from the calibration and dilution system. Other apparatuses, designs, and methods are disclosed.
Various embodiments include systems and apparatuses for reducing contamination levels within optical chambers of particle-detection instruments. In one embodiment, an apparatus to reduce contamination within an optical chamber of a particle-detection instrument is described. The apparatus includes a plenum chamber to at least partially surround an aerosol-focusing nozzle of the particle-detection instrument and accept a filtered gas flow. A curtain-flow concentrating nozzle is coupled to the plenum chamber to produce a curtain flow into the optical chamber to substantially surround an aerosol flow. Other methods and systems are disclosed.
A system includes a polymer bag, a fluid network, a saturation block, and a wick. The polymer bag has a sealed envelope and a fitment. The fluid network is coupled to the fitment. The saturation block has a fluid inlet coupled to the fluid network and has a wick chamber. The wick is configured for disposition in the wick chamber.
G01N 27/22 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
42 - Scientific, technological and industrial services, research and design
Goods & Services
Providing temporary use of an online software for
connecting, operating, and managing networked scientific
measurement instruments; providing temporary use of an
online platform providing analytics and actionable insights
by monitoring networked scientific measurement instruments.
Disclosed herein are systems and methods for measuring and controlling a flow rate through a particle counter or active air sampler. As disclosed herein, a fluid flows through a venturi tube and an orifice in the system at a predetermine velocity. A pressure differential between an inlet of the instrument and a throat section of the venturi tube is measured. The flow rate through the system can be determined based on the pressure differential and an intensive property of the fluid. An alarm can be activated when the flow rate is outside of a flow rate range.
42 - Scientific, technological and industrial services, research and design
Goods & Services
providing temporary use of non-downloadable cloud-based software for connecting, operating, and managing networked scientific measurement instruments; providing temporary use of an online non-downloadable software platform for providing analytics and actionable insights by monitoring networked scientific measurement instruments
Various embodiments include an exemplary design of an apparatus and related process to reduce or eliminate de-gassing from a liquid precursor during dispensing of the liquid precursor under vacuum. In one embodiment, the apparatus includes a liquid-flow controller configured to be coupled to a liquid-supply vessel containing the liquid precursor, and at least one valve hydraulically coupled downstream of and to the liquid-flow controller by a liquid line. The at least one valve is to be opened and closed to maintain a minimum pressure that is sufficiently high enough to reduce or prevent degassing of the liquid precursor throughout the liquid line. An atomizer is hydraulically coupled downstream of and to the at least one valve. The atomizer can produce droplets of the liquid precursor and is further to be coupled on a downstream side to a vacuum source. Other methods and apparatuses are disclosed.
Various embodiments include methods and apparatuses to reduce false-particle counts in a water-based condensation particle counter (CPC). In one embodiment, a cleanroom CPC has three parallel growth tube assemblies. A detector is coupled to an outlet of each of the three parallel growth tube assemblies, and is used to compare the particle concentrations measured from each of the three growth tube assemblies with remaining ones of the three growth tube assemblies. An algorithm compares the counts from the three detectors and determines when the particles counted are real and when they are false counts. Any real particle event shows up in all three detectors, while false counts will only be detected by one detector. Statistics are used to determine at which particle count levels the measured counts are considered to be real versus false. Other methods and apparatuses are disclosed.
Various embodiments include an exemplary design of a high-temperature condensation particle counter (HT-CPC) having particle-counting statistics that are greatly improved over prior art systems since the sample flow of the disclosed HT-CPC is at least eight times greater than the prior art systems. In one embodiment, the HT-CPC includes a saturator block to accept directly a sampled particle-laden gas flow, a condenser block located downstream and in fluid communication with the saturator block, an optics block located downstream and in fluid communication with the condenser block, and a makeup-flow block having a concentric-tube design located in fluid communication with and between the condenser block and the optics block. The makeup-flow block being configured to reduce volatile contents from re-nucleating in the optics block. Other designs and apparatuses are disclosed.
A system includes a first and second condensation particle counter, each counter having an inlet port, a growth column, and an optical element for counting particles detected at the respective inlet ports. The counters are configured to include a wick in which the wick is wetted by water. A differential pressure sensor is coupled to the first inlet port and coupled to the second inlet port. The sensor is configured to provide a pressure signal. A processor is coupled to memory and configured to receive the first signal, the second signal, and the pressure signal and generate an output corresponding to a ratio of the first signal and the second signal and correlate the ratio with the pressure signal. A housing is configured to receive the first counter, the second counter, the differential pressure sensor, the processor, and the memory.
A seed dispensing system is provided with a photoelectric sensor for monitoring the dispensing of seeds from a seed dispenser comprising a discharge conveyor with conveyor flights that transport seeds through the seed dispenser. The sensor outputs a signal representative of obstructions to the flow of light in an optical path of the sensor, and a computing unit is adapted to distinguish portions of the output signal that are attributable to the passage of one or more seeds from portions of the output signal that are attributable to the passage of a conveyor flight.
A particle velocimetry system and algorithm are provided for executing a particle reconstruction to determine three-dimensional positions of particles in a particle laden fluid flow from two-dimensional flow images generated by two-dimensional image sensors; generate a three-dimensional particle distribution from the three-dimensional position; and execute a recursive loop for performing further iterations of particle reconstruction and generation of three-dimensional particle distributions, with recursive iterations of particle reconstruction executed with the use of particle property data obtained from the prior executed iteration of particle reconstruction.
There is disclosed a handheld air flow velocity measurement probe that includes a bridge circuit assembly having an airflow velocity sensor that is a resistance temperature detector (RTD) and a digitally controlled resistive element to dynamically adjust and maintain the resistance of the velocity sensor within the overheat temperature predefined range. The velocity measurement also uses a separate temperature sensor to sense the temperature of the air or gas flow. A humidity sensor is also included remote from the other sensors to measure humidity in the gas flow to be measured. All of the above described components are housed at a probe tip instead of a base as in most standard handheld probes and the digital interface at the probe tip allows the user to replace a bulky, expensive telescoping antenna with stackable extender scheme.
G01K 13/02 - Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
G01P 5/12 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
F01D 17/08 - Arrangement of sensing elements responsive to condition of working fluid, e.g. pressure
G01K 1/14 - SupportsFastening devicesArrangements for mounting thermometers in particular locations
G01K 13/024 - Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving gases
Disclosed are systems and methods for measuring flowrates. The systems and methods may include passing a fluid from a unit under test into a cavity. The pressure of the fluid within the cavity may be measure and a slidable element located within the cavity may be repositioned to maintain a desired pressure within the cavity. The distance traveled by the slidable element in order to maintain the desired pressure may be determined along with a time for the slidable element to travel the distance. Using the distance traveled by the slidable element, a crosssectional area of the slidable element in contact with the fluid, and the time for the slidable element to travel the distance the volumetric flowrate for the fluid may be determined.
G01F 25/00 - Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
G01F 3/16 - Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls comprising reciprocating pistons, e.g. reciprocating in a rotating body in stationary cylinders
53.
MIRROR CALIBRATION OF MULTIPLE FLOW-MEASUREMENT DEVICES
Various embodiments include an exemplary apparatus and method for insitu calibration of multiple flow-sensing devices within a dilution system. In one example, a calibration and dilution system includes a first mass-flow device to serve as a global reference, a second mass-flow device configured to be coupled to and provide a supply of clean gas to a primary diluter, and a third mass-flow device configured to be coupled to and provide a supply of clean gas to a secondary diluter, where the diluters are pneumatically coupled to one another through a gas-supply line. Multiple valves are coupled to at least the mass-flow devices and the diluters. The calibration and dilution system is arranged so that the mass-flow controllers can be calibrated in-situ without having to remove any of the mass-flow controllers from the calibration and dilution system. Other apparatuses, designs, and methods are disclosed.
Various embodiments include systems and apparatuses for reducing contamination levels within optical chambers of particle -detection instruments. In one embodiment, an apparatus to reduce contamination within an optical chamber of a particle-detection instrument is described. The apparatus includes a plenum chamber to at least partially surround an aerosol -focusing nozzle of the p article- detection instrument and accept a filtered gas flow. A curtain-flow concentrating nozzle is coupled to the plenum chamber to produce a curtain flow into the optical chamber to substantially surround an aerosol flow. Other methods and systems are disclosed.
A system includes a polymer bag, a fluid network, a saturation block, and a wick. The polymer bag has a sealed envelope and a fitment. The fluid network is coupled to the fitment. The saturation block has a fluid inlet coupled to the fluid network and has a wick chamber. The wick is configured for disposition in the wick chamber.
Various embodiments include methods and systems to dilute a sampled particle-laden aerosol stream in a recirculating type of aerosol diluter system. In one embodiment, a system to dilute a sampled aerosol stream includes an aerosol sample inlet. A primary diluter device includes a first inlet to receive the aerosol stream and a second inlet to receive a filtered portion of the aerosol stream and combining the filtered portion with an additional sampled aerosol stream. A flow diverter device splits at least the sampled aerosol stream into a first portion of the sampled aerosol stream and a remaining portion of the sampled aerosol stream. A filter receives the remaining portion of the sampled aerosol stream and provides a filtered aerosol stream to the second inlet of the primary diluter device. Other methods and apparatuses are disclosed.
The respirator fit monitor described herein can be worn continuously by users so as to provide an indication as to how well their masks are fitting during use, thereby providing quantitative, wearable fit testers available for continuous use in real-life situations. The monitor includes a low-cost optical particle sensor assembly and controller unit for performing mask fit tests by comparing particle concentrations inside and outside of the mask. The fit test monitor is low cost and wearable, capable of dual sampling, capable of fit factor ratios well above 100, is battery powered and provides near real time measurements with a means for indicating the fit of the mask. The system includes wired or wireless communications for data logging, analysis and display capabilities.
A62B 27/00 - Methods or devices for testing respiratory or breathing apparatus
A62B 9/00 - Component parts for respiratory or breathing apparatus
G01M 3/20 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
G01M 3/38 - Investigating fluid tightness of structures by using light
G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables, or tubesInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipe joints or sealsInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves
G01M 3/04 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
G01M 3/32 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
G01M 3/26 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Various embodiments include methods and apparatuses to reduce false-particle counts in a water-based condensation particle counter (CPC). In one embodiment, a cleanroom CPC has three parallel growth tube assemblies. A detector is coupled to an outlet of each of the three parallel growth tube assemblies, and is used to compare the particle concentrations measured from each of the three growth tube assemblies. An algorithm compares the counts from the three detectors and determines when the particles counted are real and when they are false counts. Any real particle event shows up in all three detectors, while false counts will only be detected by one detector. Statistics are used to determine at which particle count levels the measured counts are considered to be real versus false. Other methods and apparatuses are disclosed.
Various embodiments include an exemplary design of an apparatus and related process to reduce or eliminate de-gassing from a liquid precursor during dispensing of the liquid precursor under vacuum. In one embodiment, the apparatus includes a liquid-flow controller configured to be coupled to a liquid-supply vessel containing the liquid precursor, and at least one valve hydraulically coupled downstream of and to the liquid-flow controller by a liquid line. The at least one valve is to be opened and closed to maintain a minimum pressure that is sufficiently high enough to reduce or prevent degassing of the liquid precursor throughout the liquid line. An atomizer is hydraulically coupled downstream of and to the at least one valve. The atomizer can produce droplets of the liquid precursor and is further to be coupled on a downstream side to a vacuum source. Other methods and apparatuses are disclosed.
C23C 16/448 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
C23C 16/52 - Controlling or regulating the coating process
C23C 16/455 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into the reaction chamber or for modifying gas flows in the reaction chamber
Various embodiments include methods and systems for reducing false-particle counts in a water-based condensation particle counter (CPC). One embodiment of a method includes delivering water into multiple wicks used for transporting separate portions of an aerosol sample flow, with the wicks extending from a wick stand on a first end to a flow joiner on a second end, combining particles from the separate portions of the aerosol sample flow into a single aerosol stream within the flow joiner prior to transporting the combined aerosol sample stream into a particle detection chamber within the CPC, sensing an excess volume of water delivered to the wicks, collecting the excess volume of water in a collection reservoir, and after receiving a signal corresponding to the excess volume of water, draining the excess volume of water from the collection reservoir. Other methods, systems, and apparatuses are disclosed.
An apparatus and method for use in determining one or more fluid flow properties of a fluid in a conduit is disclosed. The apparatus includes a substrate including a barrier, a first flow sensor coupled to the substrate and a second flow sensor coupled to the substrate. The first flow sensor is located at a first sensor distance from a first barrier surface, and the second flow sensor is located a second sensor distance from the second barrier surface. The first sensor distance is substantially equal to the second sensor distance. In operation, the first flow sensor produces a first sensor signal, and the second flow sensor produces a second sensor signal. The direction of flow for the fluid is determined by comparing the first sensor signal to the second sensor signal.
G01F 1/684 - Structural arrangementsMounting of elements, e.g. in relation to fluid flow
G01F 1/69 - Structural arrangementsMounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element of resistive type
G01F 1/72 - Devices for measuring pulsing fluid flows
G01P 13/00 - Indicating or recording presence or absence of movementIndicating or recording of direction of movement
G01F 15/00 - Details of, or accessories for, apparatus of groups insofar as such details or appliances are not adapted to particular types of such apparatus
An apparatus and method for use in determining one or more fluid flow properties of a fluid in a conduit is disclosed. The apparatus includes a substrate including a barrier, a first flow sensor coupled to the substrate and a second flow sensor coupled to the substrate. The first flow sensor is located at a first sensor distance from a first barrier surface, and the second flow sensor is located a second sensor distance from the second barrier surface. The first sensor distance is substantially equal to the second sensor distance. In operation, the first flow sensor produces a first sensor signal, and the second flow sensor produces a second sensor signal. The direction of flow for the fluid is determined by comparing the first sensor signal to the second sensor signal.
G01F 1/68 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
G01F 1/684 - Structural arrangementsMounting of elements, e.g. in relation to fluid flow
F15D 1/02 - Influencing the flow of fluids in pipes or conduits
G01F 1/075 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device
G01F 1/11 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission with mechanical coupling to the indicating device
G01F 1/325 - Means for detecting quantities used as proxy variables for swirl
Various embodiments include an exemplary design of a high-temperature condensation particle counter (HT-CPC) having particle-counting statistics that are greatly improved over prior art systems since the sample flow of the disclosed HT-CPC is at least eight times greater than the prior art systems. In one embodiment, the HT-CPC includes a saturator block to accept directly a sampled particle-laden gas flow, a condenser block located downstream and in fluid communication with the saturator block, an optics block located downstream and in fluid communication with the condenser block, and a makeup-flow block having a concentric-tube design located in fluid communication with and between the condenser block and the optics block. The makeup-flow block being configured to reduce volatile contents from re-nucleating in the optics block. Other designs and apparatuses are disclosed.
Various embodiments include methods and systems to measure and calibrate an optical particle spectrometer for reporting mass concentration. In one embodiment, an optical particle spectrometer is used to measure a concentration of particulate matter in a sampled particle-laden airstream. A particle diverter, in fluid communication with the spectrometer, diverts at least a portion of the particle-laden airstream at predetermined intervals. In one example, a mass filter receives the portion of the particle-laden airstream and filters a fraction of the particles within the airstream that are above a predetermined particle size. A mass sensor measures a mass of the fraction of the particles received from the mass filter or from the particle diverter and uses a calibration communication loop to provide the measured mass to the spectrometer to apply a correction factor to report mass concentration from the optical particle spectrometer. Other methods and systems are disclosed.
Various embodiments include composite wicks for ultra-low noise condensation particle counters (CPCs). In one embodiment, a composite wick includes a first porous material having a first pore density, with the first porous material further having a first surface and an opposing second surface. A second porous material is in fluid communication with the first porous material and has a first surface with an area substantially the same as an area of the first surface of the first porous material. The first surface of the second porous material is substantially in contact with the first surface of the first porous material. The second porous material has a pore density that is dissimilar the first pore density of the first material. The first material and the second material are configured to provide vapor from a liquid to a fluid-based particle counter. Other apparatuses are disclosed.
B01D 47/00 - Separating dispersed particles from gases, air or vapours by liquid as separating agent
G01N 15/06 - Investigating concentration of particle suspensions
B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation
G01N 15/00 - Investigating characteristics of particlesInvestigating permeability, pore-volume or surface-area of porous materials
G01N 15/02 - Investigating particle size or size distribution
B05C 3/00 - Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
B05C 3/02 - Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
69.
SYSTEM AND METHOD FOR THREE DIMENSIONAL PARTICLE IMAGING VELOCIMETRY AND PARTICLE TRACKING VELOCIMETRY
A particle velocimetry system and algorithm are provided for executing a particle reconstruction to determine three-dimensional positions of particles in a particle laden fluid flow from two-dimensional flow images generated by two-dimensional image sensors; generate a three-dimensional particle distribution from the three-dimensional position; and execute a recursive loop for performing further iterations of particle reconstruction and generation of three-dimensional particle distributions, with recursive iterations of particle reconstruction executed with the use of particle property data obtained from the prior executed iteration of particle reconstruction.
The disclosed subject matter compensates or corrects for errors that otherwise would be present when a measurement is made on a condensation particle counting system with the only difference causing the errors being absolute pressure. The difference in absolute pressure may be due to, for example, a change in altitude in which the condensation particle counting system is located. Techniques and mechanisms are disclosed to compensate for changes in particle count, at a given particle diameter, for changes in sampled absolute pressure at which measurements are taken. Other methods and apparatuses are disclosed.
The disclosed subject matter compensates or corrects for errors that otherwise would be present when a measurement is made on a condensation particle counting system with the only difference causing the errors being absolute pressure. The difference in absolute pressure may be due to, for example, a change in altitude in which the condensation particle counting system is located. Techniques and mechanisms are disclosed to compensate for changes in particle count, at a given particle diameter, for changes in sampled absolute pressure at which measurements are taken. Other methods and apparatuses are disclosed.
There is disclosed a handheld air flow velocity measurement probe that includes a bridge circuit assembly having an airflow velocity sensor that is a resistance temperature detector (RTD) and a digitally controlled resistive element to dynamically adjust and maintain the resistance of the velocity sensor within the overheat temperature predefined range. The velocity measurement also uses a separate temperature sensor to sense the temperature of the air or gas flow. A humidity sensor is also included remote from the other sensors to measure humidity in the gas flow to be measured. All of the above described components are housed at a probe tip instead of a base as in most standard handheld probes and the digital interface at the probe tip allows the user to replace a bulky, expensive telescoping antenna with stackable extender scheme.
G01K 13/02 - Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
G01P 5/12 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
F01D 17/08 - Arrangement of sensing elements responsive to condition of working fluid, e.g. pressure
G01K 1/14 - SupportsFastening devicesArrangements for mounting thermometers in particular locations
Various embodiments include methods and systems to dilute a sampled particle-laden aerosol stream. In one embodiment, a system to dilute a sampled aerosol stream includes an aerosol sample inlet. A filter is coupled in fluid communication with and in parallel with a flow-monitoring device to receive the sampled aerosol stream from the aerosol sample inlet. The flow-monitoring device is configured to allow for a passage of particles contained in the sampled aerosol stream. A pressure sensor and a temperature sensor monitor the filter and the flow-monitoring device. An output from the filter and the flow-monitoring device may be directed to particle measurement or particle sizing instrumentation. An actual dilution ratio of the output sent to the particle measurement or particle sizing instrumentation is determined based on a nominal flowrate of the flow-monitoring device and thermodynamic properties of a gas comprising the aerosol stream. Other methods and apparatuses are disclosed.
A microwave moisture sensor for agricultural materials, such as grains and nuts, is disclosed herein that includes a material sample holder having a substantially cylindrical cavity formed therein. The meter assembly further includes a transmitting antenna on a side of the sample holder and a receiving antenna on a side of sample holder directly opposite the transmitting antenna wherein the sample holder is located between the two antennas, the receiving antenna configured to receive a transmitted microwave through the sample holder.
G01N 24/08 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
G01N 22/00 - Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
G01N 24/00 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
Various embodiments include methods and systems to calibrate a gain of a photodetector. A method can include providing, by a reference light source, first light to a reference photodetector, determining, by controller circuitry, whether a first value from the reference photodetector produced in response to the first light is within a range of acceptable reference photodetector values, in response to determining the first value is within the range of acceptable reference photodetector values, providing, by the reference light source, second light to a measurement photodetector, determining, by the controller circuitry, whether a second value from the measurement photodetector produced in response to the second light is within a range of acceptable measurement photodetector values, and in response to determining the second value is not within the range of acceptable measurement photodetector values, adjusting a gain of the measurement photodetector.
There is disclosed a field calibratable particle sensor solution in a low-cost, very compact form factor. This makes a low-cost sensor more accurate for low-concentration pollution measurements and decreases the cost of pollution measurement systems having a wide geographic coverage. In a related embodiment, the invention illustrates a method and system to remotely and automatically calibrate one or more of the low cost sensors disclosed herein as well as other commercially available sensors (such as optical particle counters, photometers etc.) against a reference instrument (such as a beta attenuation monitor) which may or may not be physically located in the same place as the individual sensors. The method may require minimum (or no) user interaction and the calibration period is adjustable periodically.
There is disclosed a system and apparatus for connecting remote and environmental sensors and other operating systems to a portable computing and communications device. The portable device configured to receive and process a set of data and transmit a response or message to at least the user on the quality of the data received. The portable device adapted to reconfigure the remote sensors or operating systems to produce a new set of data.
G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
G01L 19/08 - Means for indicating or recording, e.g. for remote indication
G01D 1/18 - Measuring arrangements giving results other than momentary value of variable, of general application with arrangements for signalling that a predetermined value of an unspecified parameter has been exceeded
G01D 21/00 - Measuring or testing not otherwise provided for
F24F 3/16 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filteringAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by sterilisationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by ozonisation
F24F 11/30 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
F24F 11/83 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
In one example embodiment, a seed sensor is disclosed adapted to fit a conventional mounting location in existing seed tubes that provides improved performance by providing a wide light source (more LEDS), a wide photodetector and a current profiling scheme for the LEDs that provides more light at the opposite ends of the LED array. A result of such an arrangement is to improve seed resolution and to reduce seed spatial variability within the seed tube.
A01C 7/20 - Parts of seeders for conducting and depositing seed
G01B 11/14 - Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
Various embodiments include methods and systems to measure and calibrate an optical particle spectrometer for reporting mass concentration. In one embodiment, an optical particle spectrometer is used to measure a concentration of particulate matter in a sampled particle-laden airstream. A particle diverter, in fluid communication with the spectrometer, diverts at least a portion of the particle-laden airstream at predetermined intervals. In one example, a mass filter receives the portion of the particle-laden airstream and filters a fraction of the particles within the airstream that are above a predetermined particle size. A mass sensor measures a mass of the fraction of the particles received from the mass filter or from the particle diverter and uses a calibration communication loop to provide the measured mass to the spectrometer to apply a correction factor to report mass concentration from the optical particle spectrometer. Other methods and systems are disclosed.
Various embodiments include composite wicks for ultra-low noise condensation particle counters (CPCs). In one embodiment, a composite wick includes a first porous material having a first pore density, with the first porous material further having a first surface and an opposing second surface. A second porous material is in fluid communication with the first porous material and has a first surface with an area substantially the same as an area of the first surface of the first porous material. The first surface of the second porous material is substantially in contact with the first surface of the first porous material. The second porous material has a pore density that is dissimilar the first pore density of the first material. The first material and the second material are configured to provide vapor from a liquid to a fluid-based particle counter. Other apparatuses are disclosed.
Various embodiments include methods of reducing false-particle counts in a water-based condensation particle counter (CPC). One embodiment of a method includes delivering water into one or more wicks, sensing an excess volume of water delivered to the wicks, collecting the excess volume of water into a collection reservoir, and draining the excess volume of water from the collection reservoir. Other methods and apparatuses are disclosed.
Seed sensors that surround the conventional mounting location on existing seed tubes. The seed sensors sense seeds using electromagnetic fields, including RF and microwave fields. In one embodiment, a first seed sensor has a coaxial Fabry-Perot resonant cavity which is formed between two coaxial portions of a conduit that surround the seed tube. Another seed sensor uses a capacitive design. In one embodiment, the driving signals are applied 180 degrees out of phase. The detected phase shift between the reference and reflected signals provides reliable seed counting. Electronics extract the signal from the sensing field.
G01N 22/00 - Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
G01N 27/22 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
There is disclosed a field calibratable particle sensor solution in a low-cost, very compact form factor. This makes a low-cost sensor more accurate for low-concentration pollution measurements and decreases the cost of pollution measurement systems having a wide geographic coverage. In a related embodiment, the invention illustrates a method and system to remotely and automatically calibrate one or more of the low cost sensors disclosed herein as well as other commercially available sensors (such as optical particle counters, photometers etc.) against a reference instrument (such as a beta attenuation monitor) which may or may not be physically located in the same place as the individual sensors. The method may require minimum (or no) user interaction and the calibration period is adjustable periodically.
Various embodiments include methods and apparatuses to reduce false-particle counts in a water-based condensation particle counter (CPC). In one embodiment, a cleanroom CPC has three parallel growth tube assemblies. A detector is coupled to an outlet of each of the three parallel growth tube assemblies, and is used to compare the particle concentrations measured from each of the three growth tube assemblies. An algorithm compares the counts from the three detectors and determines when the particles counted are real and when they are false counts. Any real particle event shows up in all three detectors, while false counts will only be detected by one detector. Statistics are used to determine at which particle count levels the measured counts are considered to be real versus false. Other methods and apparatuses are disclosed.
A microwave moisture sensor for agricultural materials, such as grains and nuts, is disclosed herein that includes a material sample holder having a substantially cylindrical cavity formed therein. The meter assembly further includes a transmitting antenna on a side of the sample holder and a receiving antenna on a side of sample holder directly opposite the transmitting antenna wherein the sample holder is located between the two antennas, the receiving antenna configured to receive a transmitted microwave through the sample holder.
G01N 24/08 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
G01N 22/00 - Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
G01N 24/00 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
A LIBS measurement system is described herein that provides an orifice, aperture or opening in a substantially V-shaped chute or sleeve that allows access to the material to be analyzed from the underside of the chute. The laser beam is aimed through the hole and return light (signal) is collected through the hole by a photodetector assembly. A diverter device, which is located at an output end of the chute, diverts certain particles away from the chute upon receipt of an actuation signal.
B07C 5/00 - Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or featureSorting by manually actuated devices, e.g. switches
G01N 21/71 - Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
B07C 5/342 - Sorting according to other particular properties according to optical properties, e.g. colour
B07C 5/36 - Sorting apparatus characterised by the means used for distribution
The respirator fit monitor described herein can be worn continuously by users so as to provide an indication as to how well their masks are fitting during use, thereby providing quantitative, wearable fit testers available for continuous use in real-life situations. The monitor includes a low-cost optical particle sensor assembly and controller unit for performing mask fit tests by comparing particle concentrations inside and outside of the mask. The fit test monitor is low cost and wearable, capable of dual sampling, capable of fit factor ratios well above 100, is battery powered and provides near real time measurements with a means for indicating the fit of the mask. The system includes wired or wireless communications for data logging, analysis and display capabilities.
The respirator fit monitor described herein can be worn continuously by users so as to provide an indication as to how well their masks are fitting during use, thereby providing quantitative, wearable fit testers available for continuous use in real-life situations. The monitor includes a low-cost optical particle sensor assembly and controller unit for performing mask fit tests by comparing particle concentrations inside and outside of the mask. The fit test monitor is low cost and wearable, capable of dual sampling, capable of fit factor ratios well above 100, is battery powered and provides near real time measurements with a means for indicating the fit of the mask. The system includes wired or wireless communications for data logging, analysis and display capabilities.
Seed sensors that surround the conventional mounting location on existing seed tubes. The seed sensors sense seeds using electromagnetic fields, including RF and microwave fields. In one embodiment, a first seed sensor has a coaxial Fabry-Perot resonant cavity which is formed between two coaxial portions of a conduit that surround the seed tube. Another seed sensor uses a capacitive design. In one embodiment, the driving signals are applied 180 degrees out of phase. The detected phase shift between the reference and reflected signals provides reliable seed counting. Electronics extract the signal from the sensing field.
G01N 22/00 - Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
G01N 27/22 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
In one example embodiment, a seed sensor is disclosed adapted to fit a conventional mounting location in existing seed tubes that provides improved performance by providing a wide light source (more LEDS), a wide photodetector and a current profiling scheme for the LEDs that provides more light at the opposite ends of the LED array. A result of such an arrangement is to improve seed resolution and to reduce seed spatial variability within the seed tube.
A01C 7/20 - Parts of seeders for conducting and depositing seed
G01B 11/14 - Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
Various embodiments include methods of reducing false-particle counts in a water-based condensation particle counter (CPC). One embodiment of a method includes delivering water into one or more wicks, sensing an excess volume of water delivered to the wicks, collecting the excess volume of water into a collection reservoir, and draining the excess volume of water from the collection reservoir. Other methods and apparatuses are disclosed.
G01N 21/85 - Investigating moving fluids or granular solids
G01N 7/10 - Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
94.
AIR AND GAS FLOW VELOCITY AND TEMPERATURE SENSOR PROBE
There is disclosed a handheld air flow velocity measurement probe that includes a bridge circuit assembly having an airflow velocity sensor that is a resistance temperature detector (RTD) and a digitally controlled resistive element to dynamically adjust and maintain the resistance of the velocity sensor within the overheat temperature predefined range. The velocity measurement also uses a separate temperature sensor to sense the temperature of the air or gas flow. A humidity sensor is also included remote from the other sensors to measure humidity in the gas flow to be measured. All of the above described components are housed at a probe tip instead of a base as in most standard handheld probes and the digital interface at the probe tip allows the user to replace a bulky, expensive telescoping antenna with stackable extender scheme.
G01K 13/02 - Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
G01P 5/12 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
95.
System and method for converting optical diameters of aerosol particles to mobility and aerodynamic diameters
A system and a method of measuring a particle's size in a select aerosol using the optical diameter of the particle to perform a mobility and/or aerodynamic diameter conversion without any knowledge about the particle's shape and its optical properties in the aerosol being characterized. In one example embodiment of the invention, the method includes generating a set of calibration data and finding the optimal refractive index and shape that best fits the calibration data. In addition, the method includes creating a new calibration curve that provides a mobility-equivalent or aerodynamic-equivalent diameter.
A laser-based spectroscopy system that combines a distance/proximity standoff sensor, a high-repetition rate laser spectroscopy system, and software with a decision-making algorithm embedded in a processing unit which in combination performs selective firing of the laser when the target object is within an interrogation zone. In a related embodiment, the system provides selective sorting of spectroscopic signals based on information from the standoff signal and from information contained in the spectral signals themselves. The laser emission can be actively controlled while keeping the laser firing, thereby preserving the thermal stability and hence the power of the laser; and the standoff sensor information and the spectral information can be combined to determine the proper relative weighting or importance of each piece of spectral information.
G01N 21/71 - Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
G01D 5/26 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light
G01D 5/48 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using wave or particle radiation means
There is disclosed a field calibratable particle sensor solution in a low-cost, very compact form factor. This makes a low-cost sensor more accurate for low-concentration pollution measurements and decreases the cost of pollution measurement systems having a wide geographic coverage. In a related embodiment, the invention illustrates a method and system to remotely and automatically calibrate one or more of the low cost sensors disclosed herein as well as other commercially available sensors (such as optical particle counters, photometers etc.) against a reference instrument (such as a beta attenuation monitor) which may or may not be physically located in the same place as the individual sensors. The method may require minimum (or no) user interaction and the calibration period is adjustable periodically.
The electrospray generator system described herein uses a soft X-ray source instead of a radioactive source to generate bipolar ions for the neutralization of the initially charged particles. In one example, the soft X-ray source is directed at an orifice from which the charged particles emanate, thereby allowing the neutralization of the particles to happen faster than in prior art configurations and, in some instances, even neutralization occurring immediately on a droplet before it passes through the electrospray orifice.
B05B 5/00 - Electrostatic spraying apparatusSpraying apparatus with means for charging the spray electricallyApparatus for spraying liquids or other fluent materials by other electric means
B05B 5/03 - Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas
100.
Detection system for determining filtering effectiveness of airborne molecular contamination
G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials
G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
