Rate Of Flow Patents (Class 73/23.24)
  • Patent number: 10551363
    Abstract: Provided is a system 100 for monitoring an operating status of a chromatograph to determine whether or not an abnormality due to an external condition independent of the characteristics of a sample being analyzed is present in the operating status of the chromatograph. This system includes: an external-condition measurement device (pressure sensor 19A, column oven thermometer 19B and room temperature thermometer 19C) for performing a time-series of measurement of the external condition and for obtaining a series of external-condition-related data; an index value calculator 23 for calculating an index value based on the series of the external-condition-related data obtained through an analysis; and an index value storage (data storage 24) for storing the index value for the analysis, with the index value being linked with an analysis data obtained through the analysis.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: February 4, 2020
    Assignee: SHIMADZU CORPORATION
    Inventor: Toshinobu Yanagisawa
  • Patent number: 9927406
    Abstract: A system for performing gas chromatography analyzes in accordance with the present disclosure includes an analytical column and a column oven. The analytical column has an inlet portion coupled to an injector for receiving a material sample and an outlet portion coupled to a detector. The analytical column is adapted to direct the material sample from the injector to the detector. The column oven is adapted to heat the analytical column for separating constituent components of the material sample for detection by the detector.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: March 27, 2018
    Assignee: GC OVENS INC.
    Inventor: David R. Pierce
  • Patent number: 9921196
    Abstract: A method in which a sample of a gas mixture to be analyzed via gas chromatography is conducted through a chromatographic separating device via a carrier gas, separated components of the gas mixture are subsequently quantitatively determined in an absorption spectrometer having a wavelength-adaptable light source, and in order to increase the speed of analysis and to be able to also determine components that cannot be measured via absorption spectroscopy, the wavelength of the light source can be adapted to an absorption line of the carrier gas, where the individual components of the gas mixture are determined indirectly via a concentration reduction of the carrier gas.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: March 20, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventor: Piotr Strauch
  • Patent number: 9625375
    Abstract: An instrument for measuring the concentration of water isotopes in a gas sample loaded with water vapor, includes an analyzer; a vaporizer including a circuit that connects to the analyzer to transmit a vaporized calibration liquid to the analyzer and an output circuit for discharging the overflow of the vaporized calibration liquid, the output circuit arranged such that the overflow is discharged without passing through the analyzer and a purge circuit connected to the input of the vaporizer for sucking said vaporized purge fluid through the vaporizer during a purge operation, the purge circuit arranged such that the vaporized purge fluid does not pass through the analyzer; a selector for selectively establishing a first state establishing the circulation of the calibration liquid through the connection circuit and the circulation of the overflow through the output circuit and a second state establishing the circulation of the purge liquid through the purge circuit.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: April 18, 2017
    Assignee: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
    Inventor: Olivier Cattani
  • Patent number: 8919195
    Abstract: An environment providing device having a test chamber; a spraying device for receiving the supply of a gas flow to spray, into the test chamber, a fluid that contains particles; a flow meter for measuring a measured value for the flow rate of the gas flow that is supplied to the spraying device; a flow rate controlling device for controlling to a prescribed value, based on the measured value, the flow rate of the gas flow that is supplied to the spraying device; a timer for measuring a time interval over which the fluid that includes the particles has been sprayed into the test chamber; and a spraying-device-controlling device for stopping the spraying of the fluid that contains the particles after spraying a prescribed quantity of particles into the test chamber.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: December 30, 2014
    Assignee: AZBIL Corporation
    Inventor: Shinsuke Yamasaki
  • Patent number: 8857463
    Abstract: A sensor system is provided for pressure vessels. In one embodiment, a compressor directs compressed air into a purification chamber for removing carbon monoxide from the air. A sensor system housing is fastened to an opening on the purification chamber. The sensor housing provides an electrochemical sensor driven by an independent power supply and an electronic processor for receiving a signal from the electrochemical sensor. If the carbon monoxide in the purification chamber reaches a predetermined level, the electronic processor is programmed to initiate a shutdown of the compressor utilizing a relay cable.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: October 14, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: James B. Carruth, James I. Fulton, Christopher B. Bottomy, Thomas M. Hosea, Marshal J. Black
  • Patent number: 7435225
    Abstract: Method and arrangement for measuring breath gases of a patient in which the patient is connected to a breath gas unit by using a sampling line to enable flowing a sample of the breathing gases with a pre-determined sample flow rate to the breath gas measuring unit. The sample flow rate is adjusted in case it is not within limits set by the patient's breathing rate.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: October 14, 2008
    Assignee: General Electric Company
    Inventor: Mika Hietala
  • Patent number: 7382900
    Abstract: A method of determining a three-dimensional velocity field in a volume having particles, the particles within the volume being excited to radiate by illuminating the volume, including two or more cameras simultaneously capturing images of the observation volume at two different instants of time, the observation volume being divided into small volume elements (voxels), each voxel being projected onto image points of the cameras, the intensity of all the voxels being reconstructed from the measured intensity of the respective associated image points, a plurality of voxels being combined to form an interrogation volume, and a displacement vector being determined by a three-dimensional cross correlation of the two interrogation volumes.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: June 3, 2008
    Assignee: LaVision GmbH
    Inventor: Bernhard Wieneke
  • Publication number: 20080011297
    Abstract: A method of monitoring a physiologic condition includes suspending, via trans-tracheal implantation, a dual pressure sensor for exposure to a bidirectional airflow within the trachea. A respiratory parameter is measured via the dual pressure sensor based on an airflow-induced pressure differential sensed by the dual pressure sensor, and a physiologic condition is determined via the measured respiratory parameter.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 17, 2008
    Inventors: Scott Thomas Mazar, Stanley Eugene Kluge, Thomas Mark Suszynski, Lynn Marlo Zwiers, Scott Robert Tiesma
  • Patent number: 7225085
    Abstract: A precision gas flow meter that is capable of measuring small flow rates of gasses precisely in the range of 0.01 to 10 L per minute. The meter is designed to measure the gas flow in small volume increments of predetermined value, and therefore can be used to measure a gas flow that is continuous or discontinuous. The flow meter can be used to measure the gas production rates from many processes, including biological reactors, chemical reactors, and thermal-chemical reactors. The device can also be used to meter the gases that are required in small or minute volumes.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: May 29, 2007
    Assignee: The Regents of the University of California
    Inventors: Ruihong Zhang, Zhongli Pan
  • Patent number: 7194890
    Abstract: A gas chromatograph having the capability of performing a reliable measurement under a condition that the baseline of a detector output is stabilized, and a breath component analyzer using the same are provided. This gas chromatograph comprises a gas separation column accommodating a member for causing a flow delay depending on gas component; air pump for supplying an air as a carrier gas into the gas separation column; gas supply port formed in a gas flow channel extending between the air pump and the gas separation column, and adapted to supply a subject gas containing a target gas component to be detected into the carrier gas flowing in the gas flow channel; buffer tank provided upstream of the gas supply port; and a detector for detecting the gas component of the subject gas supplied into the gas separation column.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: March 27, 2007
    Assignees: FIS Inc., Abilit Corporation
    Inventors: Katsuyuki Tanaka, Mariko Sugimura, Junko Yanagitani, Noriko Kiyoshi, Kazuo Onaga, Hiroshi Koda
  • Patent number: 7104112
    Abstract: A fluid analyzer having a concentrator and separator for concentrating and separating fluid samples at pressures up to about 10,000 psi (˜700 bar). The concentrator and separator may consist of a solid-state thin-film heater-adsorber and a channel supported by a solid substrate. The concentrator may have numerous heated interactive elements for adsorbing and desorbing constituents of a sample fluid. The interactive elements may be heated in a time phased sequential manner by heaters. The separator may separate the sample fluid by compound. There may be thermal conductivity detectors, a flow sensor and electrical conductivity detectors proximate to the channels. This system of concentrator, separator, heaters and sensor may provide information about the sample fluid composition. A pump may be connected to the channel to move the sample fluid through it.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: September 12, 2006
    Assignee: Honeywell International Inc.
    Inventor: Ulrich Bonne
  • Patent number: 7012418
    Abstract: A measuring device, with a digital interface for the transmission of digital signals to an evaluation unit, is disclosed, whereby the interface includes a clock input, to which a system clock signal is fed, a signal input, to which a measured signal is applied, an arithmetic unit, which derives an output signal from the clock signal and measured signal, and a signal output where the output signal is output and transmitted to the evaluation unit. Measurement accuracy may be improved by transmitting a reference signal that is a signal derived from the clock signal, and using this reference signal to correct the output signal.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: March 14, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Rolf Reischl, Joerg Brueckner, Manfred Strohrmann, Marco Neuscheler, Hans Loistl, Axel-Werner Haag
  • Patent number: 7000452
    Abstract: A micro fluid analyzer having a concentrator and separator. A strip continuous through a channel in the concentrator may provide a hot zone that may move with the flow of fluid through the channel of the concentrator to provide a concentration of heat in the flow. A pump may provide a flow to the fluid through the analyzer. Detectors may be positioned at places where the fluid may flow. A processor or controller may be connected to the strip, separator, pump and detectors. The concentrator, separator, detectors and processor may be integrated on one chip.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: February 21, 2006
    Assignee: Honeywell International Inc.
    Inventors: Ulrich Bonne, Robert Higashi, Cleopatra Cabuz
  • Patent number: 6725704
    Abstract: A gas analyzer has a measuring chamber, a gas inlet channel, a gas outlet channel, a pump for providing a gas flow through the chamber, a device for irradiating the gas in the chamber with pulsating electromagnetic energy to generate acoustic pressure fluctuations therein, and at least one microphone communicating with the chamber for detecting the fluctuations. The inlet channel and the outlet channel each has an acoustic filter formed by channels with reduced sectional area of flow and a plurality of cavities associated therewith. The gas analyzer has at least one sandwich device formed of joined plate-like elements. The channel sections of the inlet and/or outlet channel are defined by at least two elements and the vibration-reducing cavities are also defined by at least two elements. The connections between the respective channels and cavities are formed as transverse apertures in the elements or element portions adjoining the channel and the cavities, respectively.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: April 27, 2004
    Assignee: PAS Technology A/S
    Inventors: Jesper Lange, Jorgen Christensen
  • Patent number: 6386014
    Abstract: A system for determining the energy and volume delivered by a flowing natural gas carried within a pipeline based on BTU content analysis of the natural gas using a micro-miniature gas chromatograph. By monitoring key parameters of the flowing natural gas, such as temperature, pressure, flow rate, and BTU content, the system 110 accurately determines the total energy and total volume delivered by the flowing natural gas over a programmable duration of time. Micro-miniature fabrication of the gas chromatograph imparts important advantages to the system 110, including small size, modular design, low power consumption, fast BTU analysis times, and low consumption of consumable carrier and reference gases.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: May 14, 2002
    Assignee: Eagle Research Corporation
    Inventor: James N. Butch
  • Publication number: 20010055544
    Abstract: An electromechanical device is disclosed, referred to herein as a “detector arm”. It is useful for locating humans, either living or dead, who are trapped in a structure such as a building that collapsed or was badly damaged in an earthquake, mudslide, bombing, or other disaster. This device includes an extendible mechanical arm which is equipped with a gas inlet device, a miniature video lens and light source, and preferably at least one microphone, all mounted at or near the “distal” end or tip of the detector arm. Various wires, cables, and a gas inlet hose are tied to or otherwise supported by the detector arm, allowing the wires and hose to be coupled to supporting devices, such as a video display, audio amplifier, and multi-component gas detector. The supporting devices can be affixed to the handle of the detector arm, or they can be carried (along with a battery pack) in pouches or pockets in a harness, vest, or similar device worn by the person carrying the detector arm.
    Type: Application
    Filed: March 9, 2001
    Publication date: December 27, 2001
    Inventor: Douglas Copp
  • Publication number: 20010045119
    Abstract: Method and apparatus for determining the concentration of an analyte gas using a gas measurement device comprising a gas sensing element having an electrical current output dependent upon concentration of a gas being measured, means for measuring the electrical output signal and means for limiting diffusion of the gas being measured to the gas measurement device and defining a path for gas being measured to enter the gas measurement device. Concentration is determined by exposing the gas sensing element to the analyte gas at a first rate of diffusion and diffusivity, and measuring the output signal for a time sufficient to establish a first steady state signal, reducing diffusion of gas to the gas sensing element to a second rate of diffusion and diffusivity, and measuring the output signal for a time sufficient to establish a second steady state signal, and calculating the concentration of the analyte gas based on the second diffusivity and the first and second steady state output signals.
    Type: Application
    Filed: February 14, 2000
    Publication date: November 29, 2001
    Inventor: P. Richard Warburton