With Sampling Means Patents (Class 96/413)
-
Patent number: 7310992Abstract: The present invention provides a device for continuous real-time monitoring of ambient air. The device includes a receptacle, a liquid supply, and a pressure balancing system. The receptacle includes a gas inlet slit located such that the gas inlet slit is covered by liquid within the receptacle during use. The pressure balancing portion of the present device includes communication between a point within the receptacle above the liquid level in the receptacle, as well as a liquid inlet portion at the lowermost end of the receptacle, and an air space above a liquid supply portion and the liquid supply portion itself, respectively.Type: GrantFiled: September 27, 2005Date of Patent: December 25, 2007Assignee: Sceptor Industries, Inc.Inventors: Freeman Swank, Christopher Tesluk
-
Publication number: 20070251386Abstract: A system and associated methods are disclosed for facilitating efficient collection of entrained material from an air/gas sample. In one arrangement, a method for collecting entrained material from a sample involves a dry collection cyclonic cycle combined with a period of fluid wash use. In particular, a sample is drawn into a chamber of a cyclone separator having a perimeter wall, and then a dry collection cyclonic separation cycle is performed on the sample for a period of time to separate a substantial amount of the entrained material from the sample. Subsequent to or temporally near an ending point of the dry collection cyclonic separation cycle, a fluid wash is injected into cyclone separator chamber so as to direct the fluid wash along the perimeter wall to capture material deposited on the walls and in the vortex break at the bottom of the cyclone separator.Type: ApplicationFiled: April 25, 2007Publication date: November 1, 2007Applicant: SCEPTOR INDUSTRIES INC.Inventors: FREEMAN J. SWANK, ANDREW E. PAGE
-
Patent number: 7276104Abstract: An apparatus and method for producing products using a fluid, which enables one to control the quality of the fluid from the point of production to the point of use, monitored on a microbiological, physical, and chemical basis. At least one sensor for the acquisition of purity information and a system for storing such purity information is included.Type: GrantFiled: December 3, 2002Date of Patent: October 2, 2007Assignee: L'Air Liquide, Societe Anonyme A Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Jean-François Vie, Henry Ledon, Philippe Girardon, Christel Girault
-
Patent number: 7235123Abstract: Particle collection, transport, and detection systems are disclosed. The systems are uniquely adapted for collecting or concentrating particles from a flowing medium and then transporting the collected particles to a desired location or for subsequent analysis. Electrostatic traveling wave grids can be used in conjunction with sample concentrators.Type: GrantFiled: October 29, 2004Date of Patent: June 26, 2007Assignee: Palo Alto Research Center IncorporatedInventor: David Biegelsen
-
Patent number: 7232477Abstract: An inlet for an environmental air monitor is described wherein a pre-separator interfaces with ambient environment air and removes debris and insects commonly associated with high wind outdoors and a deflector plate in communication with incoming air from the pre-separator stage, that directs the air radially and downward uniformly into a plurality of accelerator jets located in a manifold of a virtual impactor, the manifold being cylindrical and having a top, a base, and a wall, with the plurality of accelerator jets being located in the top of the manifold and receiving the directed air and accelerating directed air, thereby creating jets of air penetrating into the manifold, where a major flow is deflected to the walls of the manifold and extracted through ports in the walls.Type: GrantFiled: October 18, 2004Date of Patent: June 19, 2007Assignee: Los Alamos National Security, LLCInventor: John C. Rodgers
-
Patent number: 7153346Abstract: A filter configured to be disposed within an air passage, for providing filtered air to a pneumatically controlled component. In one embodiment, the filter comprises a main body having first and second ends and a passageway extending therebetween, a leading edge, a trailing edge, and first and second sides. The first and second sides converge at least proximate the trailing edge and are separated from one another by a longitudinal slit that extends along a section thereof. The leading edge is configured to divide a main airflow containing particles into first and second airflow portions. The first airflow portion contains particles and is directed through the air passage and the second airflow portion is substantially particle-free and directed through the longitudinal slit into the main body passage.Type: GrantFiled: February 12, 2004Date of Patent: December 26, 2006Assignee: Honeywell International, Inc.Inventors: Larry K. Ball, Antal Schmied
-
Patent number: 7141090Abstract: An emission sampling system includes an exhaust gas probe for sampling exhaust gas. A dilution gas source provides a dilution gas, and a mixing device is in fluid communication with the exhaust gas probe and the dilution gas source to mix the sampled exhaust gas and the dilution gas to form a diluted exhaust gas. A particulate filter is in fluid communication with the mixing device downstream therefrom. A dilution temperature conditioning device is arranged between the dilution gas source and the mixing device for obtaining a desired dilution gas temperature. A temperature sensor is arranged in the sampling system for producing a temperature signal corresponding to a temperature of fluid flowing through the sampling system. A controller is connected to the temperature sensor for processing the temperature signal and determining a filter temperature from the temperature signal. The controller commands the conditioning device in response to the filter temperature.Type: GrantFiled: March 28, 2003Date of Patent: November 28, 2006Assignee: AVL North America Inc.Inventors: Gerald Marek, Norbert Kreft
-
Patent number: 7135060Abstract: A particle collector comprises a housing defining an enclosed chamber. An inlet opening in the housing provides fluid communication between a source of gas and particles and the chamber and an outlet opening provides fluid communication between the chamber and the exterior of the housing. The outlet opening is connected to a pump for drawing gas and particles through the housing from the inlet opening to the outlet opening. A collecting member having an adhesive on at least a portion of the surface is disposed in the chamber between the inlet opening and the outlet opening. The adhesive surface of the collecting member is positioned adjacent to the inlet opening. When gas and particles are drawn through the housing, the inlet opening directs a stream of gas and particles at the surface of the collecting member. Particles having an aerodynamic equivalent diameter of less than about 2.5 ?m are captured.Type: GrantFiled: November 26, 2003Date of Patent: November 14, 2006Assignee: Enviromental Monitoring Systems, Inc.Inventors: John L. Jordan, Sr., John L. Jordan, Jr.
-
Patent number: 7125437Abstract: A method and apparatus for particle collection (30) that is characterized by co-aerosolizing fluids (62) into an air stream (34) containing the particles to be analyzed to significantly enhance their collection and identification efficiency is provided.Type: GrantFiled: April 14, 2003Date of Patent: October 24, 2006Assignee: The Johns Hopkins UniversityInventors: Wayne A. Bryden, Peter F. Scholl, Micah A. Carlson, Michael P. McLoughlin
-
Patent number: 7122065Abstract: An adapter for use with a low volume PUF sampler is described. The adapter is affixed over the open end of a PUF (polyurethane foam) sample cartridge. Sample tubing is affixed to an aperture in the adapter, and the free end of the sample tubing is then positioned at a desired sample location such as within an aircraft interior. As a vacuum is applied to the PUF cartridge, the adapter allows air collected at the sample point to pass through the tubing and through the interior of the PUF cartridge while preventing air surrounding the PUF cartridge from being drawn into the PUF cartridge except through the sample tubing. In this manner the sample point of a desired air sample can be selected at a point remote from the PUF cartridge. Additionally, use of multiple PUF cartridges and adapters allows the simultaneous collection of separate air samples.Type: GrantFiled: February 25, 2004Date of Patent: October 17, 2006Assignee: Honeywell International, Inc.Inventor: Richard B. Fox
-
Patent number: 7090718Abstract: A device is provided for collecting particles from a gas for subsequent analysis with a particle analyzer. The device includes an ionizer with at least one ion-emitting unit which emits ions and a collector for collecting particles charged by the ions. An electrically conductive capturing or collecting device is electrically connected to the collector of the ionizer.Type: GrantFiled: October 26, 2001Date of Patent: August 15, 2006Inventor: Rolf Nybom
-
Patent number: 7048776Abstract: A method and system removes nuclear, biological and chemical (NBC) agents from an air stream from a facility HVAC. The system includes an irradiation zone, a saturation zone and a precipitation zone. A contaminant detection apparatus controls the irradiation, saturation and precipitation of the air stream. The irradiation destroys biological agents along with saturation of air stream with a water based solution. The biological debris and dissolved chemical agents are precipitated out of the air stream by condenser coils. Nuclear agents are removed from the air stream by a diverting the air stream though a bypass filter containing high mass particulate filters and activated charcoal. The contaminants are stored for later removal and destruction. The contaminate detection apparatus includes NBC sensors.Type: GrantFiled: November 6, 2002Date of Patent: May 23, 2006Assignee: Radian, Inc.Inventors: Wayne K. Moore, Daniel B. Nickell
-
Patent number: 7032444Abstract: This invention concerns a module for extracting samples in gas phase of compounds present in an underground working liquid, the extractor module including a receptacle for the liquid, associated with a device for stirring the liquid, a liquid inlet duct, a liquid evacuation duct, an auxiliary gas admission duct, and an outlet duct for delivering auxiliary gas and gas extracted from the liquid. The auxiliary gas admission duct and the evacuation duct include a common segment, for preventing the auxiliary gas from passing is provided in the evacuation duct downstream from the common segment in the liquid-passing direction.Type: GrantFiled: September 23, 2002Date of Patent: April 25, 2006Assignee: GeoservicesInventors: Jérôme Breviere, Jean-François Evrard
-
Patent number: 7014693Abstract: A filter includes at least two different adsorptive media. First, chemisorptive media, which is porous and includes an acidic functional group, is used to remove molecular bases, including ammonia, organic amines, imides and aminoalchols, from the atmosphere used in semiconductor fabrication and other processes that require uncontaminated gaseous environments of high quality. Second, physisorptive media is able to adsorb condensable contaminants, particularly those having a boiling point greater than 150 degrees C. The physisorptive media can include untreated, activated carbon.Type: GrantFiled: May 21, 2004Date of Patent: March 21, 2006Assignee: Mykrolis CorporationInventors: Oleg P. Kishkovich, Devon Kinkead, Anatoly Grayfer, William M. Goodwin, David Ruede
-
Patent number: 6984252Abstract: A dust collection apparatus includes a container and a suction pump that sucks dust and transports it into the container. A filter is provided on a side surface of the container. This filter passes air but prevents passage of the dust in the container. A pressure detector detects an internal pressure of the container. The internal pressure of the container fluctuates due to a variation in an effective area of the filter for allowing the air to pass according to the dust collected and accumulated in the container. A dust accumulating quantity calculator which determines a quantity of the dust in the container based on the pressure detected.Type: GrantFiled: June 12, 2003Date of Patent: January 10, 2006Assignee: Ricoh Company, LimitedInventor: Yoshiyuki Tanimoto
-
Patent number: 6979363Abstract: A vapor trap for detecting VOCs includes a housing, having a first end portion, a second end portion and at least one opening for receiving gas vapor. The housing is at least partially buried in ground with a vapor containment mechanism detachably connected to the first end portion of the housing. The vapor containment mechanism can be removed and replaced with a vapor sampling mechanism. An organic vapor analyzer can be connected in fluid relationship to the vapor sampling mechanism to measure VOCs. Optionally, a vacuum pump can be utilized to draw vapor into the vapor trap and then subsequently into the organic vapor analyzer. There can be a first selector valve located between the vapor sampling mechanism and the vacuum pump and a second selector valve located between the vapor sampling mechanism and the organic vapor analyzer. A preferred organic vapor analyzer is a photo-ionization detector.Type: GrantFiled: November 2, 2004Date of Patent: December 27, 2005Assignee: Pertect Detectors, Inc.Inventors: Mark Kevin Boyd, Yale Lynn Clark
-
Patent number: 6923848Abstract: A collecting device for collecting particles floating in the atmosphere includes a collecting container; a pump for sucking the atmosphere into the collecting container; a discharge electrode disposed in the collecting container for generating single polarity ions to charge the particles in the collecting container; and a dust-collecting electrode for collecting the charged particles in the collecting container through a potential difference between the discharge electrode and the dust-collecting electrode. The dust on the dust-collecting electrode is measured and analyzed.Type: GrantFiled: July 2, 2004Date of Patent: August 2, 2005Assignee: Shimadzu CorporationInventor: Shinichiro Totoki
-
Patent number: 6890372Abstract: A denuder assembly is adapted for the collection and removal of a gaseous analyte from a sample gas. The denuder includes a housing including an internal cavity, a sample gas inlet fluidly coupled with a sample gas source, a denuder liquid inlet fluidly coupled with a denuder liquid source, a barrier sheet extending across the internal cavity and separating the internal cavity into a liquid reservoir and a gas flow-through channel fluidly coupled with and downstream of the sample gas inlet, and a denuder liquid disposed in the liquid reservoir and permeating the barrier sheet to coat the gas-channel surface of the barrier sheet thereby allowing the denuder liquid on the gas-channel surface to contact the sample gas flowing within the gas flow-through channel and allowing the analyte to diffuse through the barrier sheet into the liquid reservoir.Type: GrantFiled: August 27, 2003Date of Patent: May 10, 2005Assignee: Dionex CorporationInventors: Purnendu K. Dasgupta, Kavin J. Morris, Jianzhong Li
-
Patent number: 6890374Abstract: A collector 3 capable of collecting and sampling simultaneously various types of chlorinated organic compounds in both particulate and gaseous forms contained in a fluid and easy to extract the sampled chlorinated organic compounds therefrom includes a sampling filter 7 installed in a holder 6 having a discharge route 12a. The sampling filter 7 contains fibers and an inorganic binder for binding the fibers to one another and has a fluid-permeability. Various types of the chlorinated organic compounds such as dioxins and coplanar PCBs in both particulate and gaseous forms contained in a sample gas flowing into the holder 6 from a flue duct 25 through a sampling pipe 2 and an introduction pipe 8 are collected and sampled while the sample gas being passed through the sampling filter 7 and the resulting sample gas from which the chlorinated organic compounds are removed is then discharged out to the outside through the discharge route 12a.Type: GrantFiled: May 28, 2001Date of Patent: May 10, 2005Assignees: Miura Co., Ltd., Osaka Gas Co., Ltd.Inventors: Katsuhisa Honda, Muneki Ohuchi, Masazumi Yamashita, Hirofumi Nakamura, Toshiko Kajikawa, Takatomo Fujii, Osamu Kajikawa
-
Patent number: 6881246Abstract: A collecting device for collecting suspended particles includes a mobility analysis device; a collecting container connected to an outlet of the mobility analysis device; a discharge electrode disposed inside the collecting container for charging the particles inside the collecting container by generating single polar ions; and a collecting electrode for collecting the charged particles inside the collecting container by an electric potential difference relative to the discharge electrode. In the mobility analysis device, the particles are charged and guided into a flow path. An electric field is created in the flow path, and the particles are guided into the path perpendicular to the electric field. Since a mobility of a particle in an electric field depends on a size of the particle, the particles guided in the path are separated according to the electric field, thereby obtaining particles with sizes in a specific range.Type: GrantFiled: April 3, 2003Date of Patent: April 19, 2005Assignee: Shimadzu CorporationInventor: Shinichiro Totoki
-
Publication number: 20040261622Abstract: A porous denuder system includes: a sample inlet, which is a hollow tube and has a first connecting element at its top, external end; a particle sorter comprising one or a plurality of annular sorters, the sorter located in the sample inlet and one of its ends being pushing against an inside of the top end of the sample inlet; a porous collecting element being made of a porous material; and a sampling body which is a hollow tube and has a first connecting element at its external top end for connecting to the first connecting element at the sample inlet external top end, and a stopper at its bottom end for pushing against the porous absorbing element so the porous absorbing element is placed between the particle sorter and the stopper, and the stopper has a through hole or a through tube at its center for connecting to an external part.Type: ApplicationFiled: June 1, 2004Publication date: December 30, 2004Applicant: Institute of Occupational Safety and Health, Council of Labor Affairs, ExecutiveInventors: Tung-Sheng Shih, Chuen-Jinn Tsai, Cheng-Hsiung Huang
-
Patent number: 6790249Abstract: Improvements are provided to enable an air-curtain portal to be used for the triage and decontamination of persons who may have been exposed to toxic gas vapour or particulate material.Type: GrantFiled: April 23, 2002Date of Patent: September 14, 2004Assignee: Smiths Detection-Toronto Ltd.Inventor: John H. Davies
-
Patent number: 6783573Abstract: The present invention is directed to a gas sampling system for conducting respiratory gases from a patient respiratory gas output mechanism to a respiratory gas monitoring device. A gas sampling tube is coupled to an input connector. The gas sampling tube is configured to conduct the respiratory gases from the patient to the gas monitoring device. An output connector couples the gas sampling tube to the monitor input connector. An output dryer tube is coupled between the gas sampling tube and the output connector. The output dryer tube is characterized by a tube length and a relative moisture removal efficiency. The relative moisture removal efficiency is dependent on the tube length. The tube length is selected to limit the moisture content of the respiratory gasses being directed into the respiratory gas monitor to a predetermined level.Type: GrantFiled: September 27, 2002Date of Patent: August 31, 2004Assignee: Welch Allyn Protocol, Inc.Inventor: Peter Richardson
-
Patent number: 6773493Abstract: A water separator for a gas analyzer, comprising a housing, a first chamber disposed within the housing, a second chamber disposed within the housing, a first wall formed of a gas permeable and liquid impermeable material separating the chambers, means for introducing a gas sample containing a liquid into the first chamber with a first portion of gas passing through the first wall to the second chamber and a second portion of the gas and the liquid remaining in the first chamber, means for flowing said first portion of the gas from the second chamber to a measuring unit, a water receiving means mounted in the housing, and connected to the first chamber for receiving the second portion of the gas and for separating liquid from the second portion of the gas, a third chamber connected to the water receiving means, a fourth chamber, a second wall formed of a gas permeable and liquid impermeable material separating the third and fourth chambers, the second portion of the gas passing through the second wall to theType: GrantFiled: September 26, 2002Date of Patent: August 10, 2004Assignee: Instrumentarium Corp.Inventor: Christoph Lindström
-
Patent number: 6764536Abstract: An integrated sampling device with liquid eliminator is provided. The device includes a body with integrated valving. A liquid eliminator device is provided within the body and interposed in a flow path such that gas will pass through and liquid will not. The gas will then be conducted to a sampling device while the liquid will pass through an exhaust port back to the source of fluid. An inlet valve is also provided to control the flow of fluid from the source to the liquid eliminator element. An outlet valve may be provided to control liquid back to the source.Type: GrantFiled: November 22, 2002Date of Patent: July 20, 2004Assignee: Welker Engineering CompanyInventor: Brian H. Welker
-
Patent number: 6761757Abstract: A probe is provided that combines in one housing a pressure regulator and filter/dryer element. The probe may be connected to a conduit for the transfer of a fluid sample, such as natural gas, from the conduit to provide separation of the fluid such that a gaseous component may be then subsequently transferred to an instrument or the like. If liquid is separated it may be returned to the conduit via a return line.Type: GrantFiled: October 28, 2002Date of Patent: July 13, 2004Assignee: Welker Engineering CompanyInventor: Brian H. Welker
-
Publication number: 20040107837Abstract: A particle collector comprises a housing defining an enclosed chamber. An inlet opening in the housing provides fluid communication between a source of gas and particles and the chamber and an outlet opening provides fluid communication between the chamber and the exterior of the housing. The outlet opening is connected to a pump for drawing gas and particles through the housing from the inlet opening to the outlet opening. A collecting member having an adhesive on at least a portion of the surface is disposed in the chamber between the inlet opening and the outlet opening. The adhesive surface of the collecting member is positioned adjacent to the inlet opening. When gas and particles are drawn through the housing, the inlet opening directs a stream of gas and particles at the surface of the collecting member. Particles having an aerodynamic equivalent diameter of less than about 2.5 &mgr;m are captured.Type: ApplicationFiled: November 26, 2003Publication date: June 10, 2004Inventors: John L. Jordan, John L. Jordan
-
Publication number: 20040099143Abstract: An integrated sampling device with liquid eliminator is provided. The device includes a body with integrated valving. A liquid eliminator device is provided within the body and interposed in a flow path such that gas will pass through and liquid will not. The gas will then be conducted to a sampling device while the liquid will pass through an exhaust port back to the source of fluid. An inlet valve is also provided to control the flow of fluid from the source to the liquid eliminator element. An outlet valve may be provided to control liquid back to the source.Type: ApplicationFiled: November 22, 2002Publication date: May 27, 2004Inventor: Brian H. Welker
-
Patent number: 6736883Abstract: A particulate separation system for accurate measurement of vapor-phase mercury in a flue gas stream uses an inertial gas sampling filter in which the skin temperature of the filter element is controlled to allow vapor-phase mercury measurements while minimizing measurement artifacts caused by: (1) mercury thermally desorbing off particulates into the gas stream; and (2) mercury being removed from the vapor phase by collection on particulate matter at the gas/particle separation interface.Type: GrantFiled: December 2, 2002Date of Patent: May 18, 2004Assignee: Apogee Scientific, Inc.Inventors: Sharon Sjostrom, Timothy Ebner, Richard Slye
-
Patent number: 6733576Abstract: A gas sampling separator 29 for the separation of liquid or other contaminants from gas received from a pipeline may be easily inspected visually and cleaned. A cylindrical body 62 forming a separation chamber 64 is threaded onto a base 40. A tube 68 within the separation chamber receives gas from a port in the base and directs the gas into the separation chamber for separation of the gas from the contaminants. The separated contaminants collect in a sump 58 formed by the base and may be vented upon actuation of a manually actuated valve 76.Type: GrantFiled: September 13, 2001Date of Patent: May 11, 2004Assignee: PGI International, Ltd.Inventors: Spencer M. Nimberger, Kevin J. Cessac
-
Publication number: 20040083891Abstract: The liquid separator with integral sight glass separates liquids, if present, from gases and allows a technician to visually confirm the presence or absence of liquids in the gas. The present invention is typically used when taking a spot sample from a natural gas pipeline. Spot samples of natural gas are often analyzed by gas chromatographs which do not tolerate the presence of liquids in a sample. If the technician visually confirms the presence of liquids, adjustments to the spot sampling technique can be made to possibly eliminate the creation of such liquids due to poor technique.Type: ApplicationFiled: November 5, 2002Publication date: May 6, 2004Inventor: Brian H. Welker
-
Publication number: 20040079236Abstract: A probe is provided that combines in one housing a pressure regulator and filter/dryer element. The probe may be connected to a conduit for the transfer of a fluid sample, such as natural gas, from the conduit to provide separation of the fluid such that a gaseous component may be then subsequently transferred to an instrument or the like. If liquid is separated it may be returned to the conduit via a return line.Type: ApplicationFiled: October 28, 2002Publication date: April 29, 2004Applicant: Welker Engineering CompanyInventor: Brian H. Welker
-
Publication number: 20040060443Abstract: The present invention is directed to a gas sampling system for conducting respiratory gases from a patient respiratory gas output mechanism to a respiratory gas monitoring device. The respiratory gas monitoring device is equipped with a monitor input connector. The gas sampling system includes an input connector configured to couple the gas sampling system to the patient respiratory gas output mechanism. A gas sampling tube is coupled to the input connector. The gas sampling tube is configured to conduct the respiratory gases from the patient to the gas monitoring device. An output connector couples the gas sampling tube to the monitor input connector. An output dryer tube is coupled between the gas sampling tube and the output connector. The output dryer tube is characterized by a tube length and a relative moisture removal efficiency. The relative moisture removal efficiency is dependent on the tube length.Type: ApplicationFiled: September 27, 2002Publication date: April 1, 2004Applicant: Welch Allyn Protocol, Inc.Inventor: Peter Richardson
-
Patent number: 6712881Abstract: An apparatus and method for producing a diffusive, continuous laminar flow for particle growth via condensation of vapors with a mass diffusivity near or higher than the thermal diffusivity of the surrounding gas. In an exemplary embodiment, the method uses the condensation of water vapor onto particles suspended in air.Type: GrantFiled: January 30, 2003Date of Patent: March 30, 2004Assignee: Aerosol Dynamics Inc.Inventors: Susanne Vera Hering, Mark Richard Stolzenburg
-
Patent number: 6709478Abstract: A gas separator system for providing contaminant-free engine crankcase gas to a gas analyzer. The system has an inlet member for receiving the crankcase gas from the engine and an oil separator for separating at least a portion of the contaminants from the crankcase gas. A pump is arranged to draw the crankcase gas through the inlet member and move the separated crankcase gas to the gas analyzer.Type: GrantFiled: June 6, 2002Date of Patent: March 23, 2004Assignee: DaimlerChrysler CorporationInventor: Erwin J Schlaps
-
Patent number: 6706094Abstract: A system for rapid collection of large volumes of dissolved gases from groundwater pumps the water from a large-diameter passage through a small-diameter restrictor passage, and then into a flow-through collection chamber. The small-diameter passage causes a drop in the hydrostatic pressure of the groundwater traveling therein, causing spontaneous ebullition of gas bubbles which are then collected in the collection chamber. Testing reveals that the gases are collected in proportion to their presence in the groundwater, and thus the system allows accurate quantification of concentrations of dissolved gas in groundwater. The system may beneficially be made easily portable, thereby allowing its use in the field as well as in laboratory settings.Type: GrantFiled: May 13, 2002Date of Patent: March 16, 2004Assignee: WiSys Technology Foundation Inc.Inventor: Bryant Alan Browne
-
Patent number: 6692553Abstract: A particle collector comprises a housing defining an enclosed chamber. An inlet opening in the housing provides fluid communication between a source of gas and particles and the chamber and an outlet opening provides fluid communication between the chamber and the exterior of the housing. The outlet opening is connected to a pump for drawing gas and particles through the housing from the inlet opening to the outlet opening. A collecting member having an adhesive on at least a portion of the surface is disposed in the chamber between the inlet opening and the outlet opening. The adhesive surface of the collecting member is positioned adjacent to the inlet opening. When gas and particles are drawn through the housing, the inlet opening directs a stream of gas and particles at the surface of the collecting member. Particles having an aerodynamic equivalent diameter of less than about 2.5 &mgr;m are captured.Type: GrantFiled: October 10, 2001Date of Patent: February 17, 2004Assignee: Environmental Monitoring Systems, Inc.Inventors: John L. Jordan, Sr., John L. Jordan, Jr.
-
Patent number: 6689179Abstract: Devices for measuring at least one parameter of a medium flowing in a line, having an inlet conduit an outlet conduit, having the disadvantage in the prior art that liquids flowing into the inlet conduit can reach a measurement element and alter the measurement characteristic curve behavior of the measurement element. A device of the invention has, between the inlet conduit and outlet conduit, a deflection conduit with a separation element, by which the liquids are separated out and therefore do not reach the measurement element.Type: GrantFiled: March 8, 2002Date of Patent: February 10, 2004Assignee: Robert Bosch GmbHInventors: Christian Heinen, Thomas Lenzing, Klaus Reymann, Uwe Konzelmann, Andy Mikleuschewitsch
-
Patent number: 6645274Abstract: A device and method for determining at least one parameter of a flowing gas-liquid mixture, including parameters of the intake air of internal combustion engines, uses a condensation trap to protect a measuring element from back flowing liquids, downstream from the measuring element.Type: GrantFiled: April 3, 2002Date of Patent: November 11, 2003Assignee: Robert Bosch GmbHInventors: Heinz Rilling, Gerhard Hueftle, Thomas Lenzing, Hans Beyrich, Roland Mueller, Uwe Konzelmann
-
Patent number: 6632271Abstract: An insert for a cassette that is adapted to sample particulate matter in air. The insert has an upstream end that is circular and a downstream end that is flange shaped with substantially smooth walls between the upstream and downstream ends of the insert. The cassette with the insert disposed therein is also described.Type: GrantFiled: July 17, 2001Date of Patent: October 14, 2003Inventors: Larry Don Robertson, Robert Allen Garrison
-
Publication number: 20030182987Abstract: A method that allows an individual to personally test for contaminants in an air supply. The method consists of purchasing the test kit, mounting the test kit to an existing particulate filter, placing the mounted test kit and particulate filter into the filter housing and blowing air through the test kit. The test kit is then removed from the furnace, repackaged and sent to a laboratory for analysis. The air quality test kit comprises a test filter, a filter backing pad, a support and a pair of end caps. The test filter, the filter backing pad and the support form a device to capture and retain particles carried in an airflow.Type: ApplicationFiled: March 26, 2002Publication date: October 2, 2003Inventor: Michael D. Bodnar
-
Patent number: 6607581Abstract: A passive air sampler is designed to facilitate emptying granular or particulate adsorbent from it directly into a thermal desorption tube or other vessel for use in an analytical instrument. The preferred form has an adsorbent container in a conical or funnel-like shape.Type: GrantFiled: April 13, 2001Date of Patent: August 19, 2003Assignee: SKC, Inc.Inventors: Donald Lee Smith, Peter M. Hall
-
Publication number: 20030110950Abstract: A particulate separation system for accurate measurement of vapor-phase mercury in a flue gas stream uses an inertial gas sampling filter in which the skin temperature of the filter element is controlled to allow vapor-phase mercury measurements while minimizing measurement artifacts caused by: (1) mercury thermally desorbing off particulates into the gas stream; and (2) mercury being removed from the vapor phase by collection on particulate matter at the gas/particle separation interface.Type: ApplicationFiled: December 2, 2002Publication date: June 19, 2003Inventors: Sharon Sjostrom, Timothy Ebner, Richard Slye
-
Patent number: 6572686Abstract: This invention collects and analyzes condensable gases using a cryogenic cooling device connected to a charcoal cold trap assembly. More particularly, it uses a removable cryogenic cooling device instead of liquid nitrogen to trap condensable gases. The invention has four major components: (1) a removable cryogenic cooling device (2) a vacuum canister, (3) a cold trap canister filled with activated charcoal, and (4) a cover assembly with welded inlet/outlet tubes and an o-ring seal between the cover assembly and the vacuum canister.Type: GrantFiled: February 14, 2002Date of Patent: June 3, 2003Assignee: The United States of America as represented by the United States Department of EnergyInventors: John L. Biernat, Jr., William J. Wlaschin
-
Patent number: 6565638Abstract: After supporting a petri dish S having a culture medium K contained therein with a given thickness on a petri dish holder 17 of a housing 14, a nozzle holder 13 is clamped at a top of the housing 14. When a motor 19 is energized to rotate a high static pressure fan 18, air is introduced through nozzle openings 12a, and flows through a space between the nozzle 15 and the culture medium K. By setting a distance between the nozzle and the culture medium to 0.5-1.5 mm, a high collection efficiency can be attained.Type: GrantFiled: June 7, 2001Date of Patent: May 20, 2003Assignee: Midori Anzen Co., Ltd.Inventors: Naoki Sugita, Yutaka Hatta, Takeshi Yamada, Yukihiro Nakata
-
Publication number: 20030075049Abstract: A liquid separator for a respiratory gas sample analyzer includes a closed container having a liquid trap filter chamber integral with the container. The liquid trap filter chamber includes an inlet compartment and an outlet compartment. The inlet compartment is interposed between a sample inlet port and a sample outlet port and includes a gas permeable, liquid impermeable filter element for separating liquid from a gas sample, the liquid separated from the gas sample passing to a collection chamber. The outlet compartment includes a further gas permeable, liquid impermeable trap filter element which is interposed between the collection chamber and a low pressure port, for preventing the flow of liquid through the output compartment to the low pressure port.Type: ApplicationFiled: October 19, 2001Publication date: April 24, 2003Inventors: Michael T. Larsen, Leonid B. Soroka
-
Publication number: 20030075048Abstract: A particle collector comprises a housing defining an enclosed chamber. An inlet opening in the housing provides fluid communication between a source of gas and particles and the chamber and an outlet opening provides fluid communication between the chamber and the exterior of the housing. The outlet opening is connected to a pump for drawing gas and particles through the housing from the inlet opening to the outlet opening. A collecting member having an adhesive on at least a portion of the surface is disposed in the chamber between the inlet opening and the outlet opening. The adhesive surface of the collecting member is positioned adjacent to the inlet opening so that the ratio of the distance between the inlet opening and the collecting member surface to the diameter of the inlet opening is less than about 1. When gas and particles are drawn through the housing, the inlet opening directs a stream of gas and particles at the surface of the collecting member.Type: ApplicationFiled: October 10, 2001Publication date: April 24, 2003Inventors: John L. Jordan, John L. Jordan
-
Publication number: 20030066428Abstract: A water separator for a gas analyzer, comprising a housing, a first chamber disposed within the housing, a second chamber disposed within the housing, a first wall formed of a gas permeable and liquid impermeable material separating the chambers, means for introducing a gas sample containing a liquid into the first chamber with a first portion of gas passing through the first wall to the second chamber and a second portion of the gas and the liquid remaining in the first chamber, means for flowing said first portion of the gas from the second chamber to a measuring unit, a water receiving means mounted in the housing, and connected to the first chamber for receiving the second portion of the gas and for separating liquid from the second portion of the gas, a third chamber connected to the water receiving means, a fourth chamber, a second wall formed of a gas permeable and liquid impermeable material separating the third and fourth chambers, the second portion of the gas passing through the second wall to theType: ApplicationFiled: September 26, 2002Publication date: April 10, 2003Inventor: Christoph Lindstrom
-
Patent number: 6544312Abstract: In a device for separating the particle size spectrum of a polydisperse aerosol comprising a housing including an inlet part, a guide part, an outlet part, a nozzle insert and a separation insert, all parts are axially symmetrical and joined by centering fits so that they are easy to manufacture and can easily be assembled and also replaced. The parts are so fitted together that they are automatically centered during assembly while providing for the properly sized aerosol and air supply and particle fraction extraction channels.Type: GrantFiled: September 17, 2001Date of Patent: April 8, 2003Assignee: GSF Forschungszentrum fur Umwelt und Gesundheit GmbHInventors: Bernhard Müllinger, Joachim Heyder
-
Publication number: 20030015098Abstract: An insert for a cassette that is adapted to sample particulate matter in air. The insert has an upstream end that is circular and a downstream end that is flange shaped with substantially smooth walls between the upstream and downstream ends of the insert. The cassette with the insert disposed therein is also described.Type: ApplicationFiled: July 17, 2001Publication date: January 23, 2003Inventors: Larry Don Robertson, Robert Allan Garrison