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073 - Measuring and testing

073230200 - GAS ANALYSIS

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Class / Patent application numberDescriptionNumber of patent applications / Date published
073310060 Semiconductor 44
Entries
DocumentTitleDate
20120160012GAS SENSOR - [Objective] To provide a gas sensor which can improve the sensitivity to NO06-28-2012
20090193873FUEL PROPERTY SENSOR AND FUEL TANK ASSEMBLY - A fuel property sensor, which is installed to a fuel tank of a fuel tank assembly, senses a property of fuel at the fuel tank. First and second electrodes of the fuel property sensor are made of an electrically conductive material and are exposed in a fuel flow passage in a housing of the fuel property sensor such that the first and second electrodes are generally parallel to a flow direction of fuel in the fuel flow passage and are spaced from each other by a predetermined distance. The fuel property sensor determines the property of the fuel based on a capacitance, which is generated between the first electrode and the second electrode.08-06-2009
20090013761GAS SENSOR - A gas sensor is provided. The gas sensor includes a post, an ion conductive layer, a first sensing portion and a second sensing portion. The post includes a first end, a second end, a side surface and a groove, wherein the groove is formed on the side surface of the post, and an opening is formed on the first end connecting with the groove. The ion conductive layer is formed on the side surface of the post, including a first surface and a second surface, wherein the first surface is opposite to the second surface, and the ion conductive layer and the groove compose a chamber. The first sensing portion is formed on the first surface. The second sensing portion is formed on the second surface corresponding to the first sensing portion, wherein the first sensing portion is located in the chamber.01-15-2009
20130031958NETWORK MANAGEABLE ADVANCED GAS SENSOR APPARATUS AND METHOD - Mechanical, electronic, algorithmic, and computer network facets are combined to create a highly integrated advanced gas sensor. A sensor is integrated into switchgear housings. These sensors integrated into high voltage switchgear products, deployed by electric utility end users in replacement and expansion cycles, function to detect and mitigate atmospheric pollution caused by leaking SF02-07-2013
20130031959AIR MASS METER - An air mass meter having a sensor chip. The sensor chip is constructed as a microelectromechanical system and has a sensor element, an electronic evaluation circuit and an electronic oscillator. The sensor chip is fastened to a carrier element using an adhesive. In order to specify an air mass meter which makes it possible to evaluate data in a particularly reliable and accurate manner, the sensor chip is divided into a first region and a second region. The sensor chip is fastened to the carrier element using the adhesive solely in the first region, and the sensor element and the oscillator are arranged in the second region.02-07-2013
20130074582GAS SENSOR - A gas sensor including a plate-shaped detecting element is disclosed, wherein the detecting element has a pair of principle surfaces and a pair of side surfaces adjacent to the pair of principle surfaces, in a radical direction thereof, wherein a first chamfered portion is provided between at least one first principal surface of the pair of principal surfaces and the rear end surface of the detecting element, and wherein the angle between a first axis ridgeline portion formed by the first principal surface and a first side surface that is one of the pair of side surfaces and extending in the direction of the axis, and a first width ridgeline formed by the first principal surface and the first chamfered portion and extending in a width direction is larger than 90°.03-28-2013
20130036795GAS SENSOR - [Objective] To provide a gas sensor in which a filter member provided in an aerial communication hole adapted to introduce the air for exposing a reference electrode of a detection element to the air is reliably protected through simple configuration.02-14-2013
20120180550EMERGENCY MESSAGE TRANSMISSION METHOD AND ELECTRONIC DEVICE IMPLEMENTING THE METHOD - The disclosure provides an emergency message transmission method and an electronic device implementing the method. The electronic device stores a reference voltage value and comprises a smoke assessing unit. The method includes steps: capturing air composition around the electronic device, assessing whether the air composition has changed, if the air composition has changed, detecting an electrical current of the smoke assessing unit, amplifying the electrical current and converting the amplified current to a voltage value, comparing the converted voltage value with the reference voltage value, judging whether the converted voltage value reaches the reference voltage value, and if the converted voltage value reaches the reference voltage value, outputting a signal including an emergency message.07-19-2012
20100005858Polyaniline Nanofiber-Metal Salt Composite Materials for Arsine Detection - A sensor for detecting arsine includes a pair of electrodes separated by an electrode gap, and a layer of conducting polymer material positioned over and making electrical contact with the pair of electrodes, the layer of conducting polymer material being modified with a metal salt such that the electrical resistance of the conducting polymer material measured across the electrodes is responsive to changes in an amount of arsine to which the conducting polymer material is exposed.01-14-2010
20130086977INTRINSICALLY SAFE NDIR GAS SENSOR IN A CAN - An NDIR gas sensor is housed within a mechanical housing made up of a header housing, a can mounted to the header housing, and a sample chamber mounted above the can. The can has a top surface with a pair of windows formed in it to allow radiation to enter and return from the sample chamber. An electronics module is mounted on a printed circuit board hermetically sealed within the can. A signal channel path length detected by the signal detector is greater than a reference channel path length detected by the reference detector and an absorption bias between the signal and reference outputs can be used to determine a gas concentration in the sample chamber. Both the signal detector and the reference detector have an identical narrow band pass filter with the same Center Wavelength (“CWL”), Full Width Half Maximum (FWHM) and transmittance efficiency at the CWL.04-11-2013
20090314059CERAMIC HEATER - A ceramic heater is incorporated in a gas sensor capable of detecting the concentration of a specific gas contained in a target gas. The ceramic heater is composed of a heater base member made of ceramic, a heat generating member embedded in the heater base member, and electrode pads electrically connected to contact metal members. The contact metal members are electrically connected to external leads in the gas sensor. In the ceramic heater the electrode pads are formed on a contact area of the outer peripheral surface of the heater base member. The contact area includes a rear end part of the heater base member. On assembling the ceramic heater into the gas sensor, the contact metal members slid on the electrode pads formed in the contact area without directly contacting onto the outer peripheral surface of the heater base member.12-24-2009
20100122568GAS SENSOR SYSTEM AND METHOD FOR CONTROLLING GAS SENSOR - A gas sensor system including a gas sensor; a current control unit; a constant control unit; and a temperature acquisition unit. The gas sensor includes a measurement chamber, a pump cell and an electromotive force cell. The current control unit performs feedback control on current flowing through the pump cell in response to the voltage of the electromotive force cell and in accordance with a control constant which characterizes the feedback control. Further, the constant control unit changes the control constant of the feedback control in accordance with a value (for example, a resistance value of the electromotive force cell) corresponding to the temperature of the gas sensor.05-20-2010
20120216599GAS SENSOR, CONTACT MEMBER OF GAS SENSOR AND SENSOR ELEMENT RETAINING MEMBER FOR CONTACT MEMBER OF GAS SENSOR - To provide a gas sensor which can stably carry out a retention of a sensor element by a contact member and a reservation of an electric continuity between them. A contact member has an insertion port in which the sensor element is inserted and retained to obtain an electric connection with the sensor element. The contact member is provided with a plurality of sensor element retaining members which respectively have a plurality of abutting parts abutting on the sensor element, at least a part of a plurality of abutting parts is a first abutting part which has a leading end part formed as a linear shape or a point-like shape, and the leading end part of the first abutting part is a free end part which applies an elastic force to the sensor element while having point contact or line contact with the sensor element.08-30-2012
20100269568GAS SENSOR AND METHOD OF MANUFACTURING SAME - The gas sensor includes a sensor element having electrode pads formed in its electrode forming surfaces at the proximal end portion thereof, an insert-holding insulator insert-holding the sensor element, a housing insert-holding the insert-holding insulator, and a terminal unit. The proximal end portion of the sensor element is held by the terminal unit which includes a pair of proximal end insulators formed with metal terminals at their inner surfaces, and a spring member pressing the proximal end insulators in a direction that they approach each other. Each of the proximal end insulators includes an insulator contact portion in contact with one of the electrode forming surfaces. The insulator contact portion is located closer to the proximal end of the sensor element than a terminal contact portion at which the metal terminal contacts a corresponding one of the electrode pads.10-28-2010
20090235721REDUCED GRAPHENE OXIDE FILM - Spin coating a mixture of graphene oxide platelets, water, and an organic solvent by placing a drop of the mixture on a spinning substrate while blowing a drying gas onto the substrate and allowing the water and the organic solvent on the substrate to evaporate; and repeating the spin coating one or more times to form a graphene oxide film in contact with the substrate. An about 1-100 nm thick film of overlapping platelets of reduced graphene oxide.09-24-2009
20090235720Dome Gas Sensor - A Non-Dispersive InfraRed gas sensor has the LED radiation source and photodiode detector side by side in a dome shaped gas chamber. The mirror coated inner surface of the dome reflects light from the LED to the photodiode. The reflecting surface in one embodiment has a plurality of semi-toroidal sub surfaces, such that radiation originating from a point on the LED is unfocussed as it converges on the photodiode. The LED and photodiode may be mounted on a bridge printed circuit board extending along the diameter of the dome housing. The bridge height is adjustable during assembly to optimise the radiation's incidence onto the photodiode.09-24-2009
20090007637GAS SENSOR - A gas sensor is provided. The gas sensor includes a substrate, a first electrode, a second electrode, a power source and a current meter. The substrate includes a planar surface, wherein the substrate is made of ion-conductive material, proton-conductive material or electron-conductive material. The first electrode is formed on the planar surface. The second electrode is formed on the planar surface, wherein a gap is formed between the first electrode and the second electrode. The power source is electrically connected to the first electrode and the second electrode, wherein the power source provides a voltage to the first electrode and the second electrode. The current meter is electrically connected to the first electrode and tie second electrode to measure a limit current passing the first electrode and the second electrode.01-08-2009
20130160524METHOD AND APPARATUS FOR CONTINUOUS MEASUREMENT OF DIFFERENCES IN GAS CONCENTRATIONS - A method for continuous measurement of differences in gas concentrations, comprises providing at least first and second gas analyzers, connecting a stream of incurrent fluid to a chamber containing an animal, withdrawing air from the chamber to form a stream of excurrent fluid, taking first subsamples of the excurrent fluid in a first subsampler, taking a subsample of the incurrent fluid in a second subsampler, alternately providing excurrent fluid from the first subsampler to the first gas analyzer and to the second gas analyzer to measure the gas concentrations in the excurrent fluid, and alternately providing incurrent air from the second subsampler to the first gas analyzer and to the second gas analyzer to measure the gas concentrations in the incurrent fluid.06-27-2013
20120260720SENSOR - A circuit section of a NO10-18-2012
20130019655GAS SENSOR - In a gas sensor element of a gas sensor, reference oxygen chamber (01-24-2013
20090056419HIGH EFFICIENCY, LOW LOSS NO TO NO2 CATALYTIC CONVERTER - Provided herein are catalytic converters that have improved characteristics. According to various embodiments, the converters include high surface area catalyst supports conformally coated with nanoparticulate thin films of a catalyst (e.g., Pt, Pd and Rh). The films are continuous, preventing absorption of species within the converter on the catalyst support. The converters provide higher oxidation efficiency than conventional catalytic converters, in certain embodiments approaching the stoichiometric ratio for the reaction. The converters also provide minimal loss of chemical species within the converter. Also provided are novel methods of fabricating catalytic converters that involve atomic layer deposition of Pt or other catalyst on the support, as well as methods and devices for sensing NO in samples that involve catalytic conversion of NO to NO2.03-05-2009
20090084160GAS MEASURING DEVICE AND METHOD OF MANUFACTURING THE SAME - A gas measuring device for measuring a presence of a target gas in a fluid medium includes a sensor case defining a sensor cavity extending from an open end of the sensor case, wherein the fluid medium flows into the sensor cavity through the open end. A sensor is positioned within the sensor cavity for sensing the presence of the target gas, wherein the sensor has a sensing element on one side of the sensor, and the sensing element is positioned within the sensor cavity such that the sensing element faces away from the open end.04-02-2009
20110283775GAS CONCENTRATION DETECTION SENSOR - First outer gas apertures 11-24-2011
20100170325SYSTEM FOR HYDROGEN SENSING - Exemplary embodiments provide a self-powered wireless gas sensor system and a method for gas sensing using the system. The system can be used to detect and constantly track a presence of various gases including hydrogen, ozone and/or any hydrocarbon gas, and remotely transmit the sensing signal. The system can include a low power gas sensor that consumes less than about 30 nano-watts of power. As a result, the system can detect the presence of hydrogen at about 10 ppm. The sensor can also provide a fast response time of about 1-2 seconds. In various embodiments, the system can be physically small and packaged with all components assembled as a single compact unit.07-08-2010
20090090169GAS SENSOR AND GAS DETECTION METHOD - A gas sensor contains such a dielectric substance having a domain boundary formed between domains with different polarization directions. When a gaseous molecule is adsorbed to the dielectric substance, a transient current is generated due to displacement of the domain boundary under an applied voltage. The adsorbed gaseous molecule is detected by measuring the transient current.04-09-2009
20100122569GAS SENSOR PROVIDED WITH INNER AND OUTER COVERS FOR GAS SENSING ELEMENT - A gas sensor comprises a gas sensing element, a housing for the gas sensing element, and an element cover secured to an axial end of the housing and composed of an inner cover covering part of the gas sensing element and an outer cover disposed outside the inner cover. The outer cover comprise an approximately cylindrical side wall body, a bottom body integral with the side wall body, and a guide having first and second ends, the first end being secured to the side wall body and the second end being separated from the side wall body and located to provide a side opening between the second end and the side wall body. The side opening introduces a gas thereinto. A discharge opening is formed through the bottom body. The second end is recessed inward in the outer cover and is closer to the bottom body than the first end.05-20-2010
20100263435Nanoparticle array sensors - An effective sensor for indicating exposure to a toxic gas includes a non-conductive, inert substrate such as glass or polyethylene, a two-dimensional film of nanoparticles of a conductive metal such as silver or copper on the substrate and an electrode connected to each end of the film. When an electrical current passes through the film and the sensor is exposed to a toxic gas, changes in the electrical resistance of the film provides an indication of the presence of the toxic gas.10-21-2010
20110197657Gas Sensors, Methods of Preparation Thereof, Methods of Selecting Gas Sensor Materials, and Methods of Use of Gas Sensors - Embodiments of the present disclosure provide for methods of selecting a nanostructured deposit for a conductometric gas sensor, methods of detecting a gas based on the acidic or basic characteristic of the gas using a conductometric gas sensor, devices including conductometric gas sensors, arrays of conductometric gas sensors, methods of determining the acidic or basic characteristic of a gas, methods of treating a sensor, and the like.08-18-2011
20100077840Light induced gas sensing at room temprature - A light-assisted sensor and method of light-assisted sensing of gaseous species involves contacting a gaseous medium with a material selected to adsorb on its surface one or more gaseous species of interest and illuminating the surface of the material from a source to induce a change of an electrical property, such as conductivity, of the material in the presence of the one or more gaseous species. The change in the electrical property of the material is measured and can be used to identify and quantify the gaseous species of interest in the gaseous medium.04-01-2010
20090133473MAGNETIC GAS SENSOR AND METHODS USING ANTIFERROMAGNETIC HEMATITE NANOPARTICLES - A nanoscale antiferromagnetic gas sensing apparatus and methods of measuring gas using the apparatus are described. The use of the magnetic properties of an antiferromagnetic material as gas sensing parameters explores the concept of magnetic gas sensing. According to a preferred embodiment, a nanoscale magnetic hydrogen sensor apparatus is developed based on varying of the saturation magnetization and remanence of nanoscale antiferromagnetic hematite with hydrogen flow. For example, the saturation magnetization and remanence of nanoscale hematite has been shown to increase one to two orders of magnitude in the presence of flowing hydrogen gas at concentrations in the 1-10% range and at 575 K, indicating that a magnetic hydrogen sensor using hematite material may be practical and useful for detecting hydrogen in various environments such as those wherein production, storage, transportation, and/or vehicle use of hydrogen is being conducted.05-28-2009
20090090168Embedded Piezoelectric Microcantilever Sensors - An apparatus and method for sensing chemical and/or biological analytes includes a deflectable arm of a microcantilever at least partially embedded within a sensing element. A gaseous or liquid medium which may include the analyte being detected is introduced to the sensing element. The sensing element undergoes volumetric expansion or contraction in the presence of the analyte sought to be detected, typically by adsorbing the analyte. The volumetric change of the sensing element causes the deflectable arm to deflect. The deflectable arm includes at least one measurable physical property which changes when the arm deflects. Detecting means are provided to measure the change in the physical property to determine the presence and amount of analyte present. An array of microcantilevers in which each microcantilever is dedicated to detecting a particular analyte which may be included in the medium, is also provided.04-09-2009
20090282898Method for quantitative determination of hydrogen peroxide using potentiometric titration - An electrochemical potentiometric titration method that entails titration of a known volume of a catholyte containing an unknown amount of hydrogen peroxide in a titration cell having two electrodes, a platinum working electrode and a silver/silver chloride reference electrode. A known concentration of a titrant is added to the catholyte in the titration cell. Simultaneously, as the titrant is added the potential between the working electrode and the reference electrode is monitored. The point at which all of the hydrogen peroxide has been consumed is signaled when the cell potential changes abruptly. Since the concentration of the titrant is already known, the amount of titrant added (concentration multiplied by volume) is directly related to the amount of hydrogen peroxide consumed. The concentration of hydrogen peroxide is calculated from the volume of catholyte and the moles of hydrogen peroxide.11-19-2009
20080257016GAS SENSOR - A gas sensor having an axis including a detecting element; a metal shell; an outer cylinder; and a plug member, as defined herein, and the gas sensor includes a first protective member that covers an air vent of the plug member so as to protect the filter member, the protective member having a ventilation portion having an opening smaller than an opening of the air vent and at least partially overlapping the air vent in the axial direction, and at least one of the outer cylinder and the plug member is provided with a locking portion that limits rotation of the protective member around the axis.10-23-2008
20080282773DEVICE FOR PASSING THROUGH A GAS MIXTURE - A device for passing through a gas mixture comprises a capillary apparatus with one or more capillaries connecting a first side of the capillary apparatus to a second side of the capillary apparatus, wherein each capillary tapers from one side towards the other side of the capillary apparatus at least in sections.11-20-2008
20080209984SUPPORTING MEMBER FOR GAS SENSOR - A device for fixedly supporting a sensor so that the sensor is exposed to a gas to be measured flowing through a passage is provided. The sensor comprises a gas sensing element that detects a physical characteristic of the gas, and a cover that surrounds the sensing element and has a gas inlet hole through which the gas is introduced inside the gas cover. The supporting device is arranged to face the gas inlet hole outside the cover so as to have a gap left between the supporting device and the gas cover.09-04-2008
20080250847DETECTOR AND PRODUCTION METHOD THEREOF - A detector for detecting a gaseous component in a gas is comprised of a sensor having a gas detecting region configured to output an electric signal in response to detection of the gaseous component and a contact portion configured to conduct the electric signal; an enclosure housing the sensor and having a through hole configured to introduce the gas to the gas detecting region; a wiring partly facing to the contact portion and being led out of the enclosure; an electric conductor interposed between the contact portion and the wiring; a packing member surrounding the through hole and so as to make a gap between the sensor and the enclosure impervious to the gas.10-16-2008
20090133472Gas Sensor - There is provided a highly accurate gas sensor by improving an S/N ratio of a circuit. One ends (05-28-2009
20090100907GAS SENSOR - A gas sensor including a metal shell; a detection element main body held by the metal shell; a porous protection layer coated on a leading end portion of the detection element main body; and a protector including a side wall surrounding an element protruding portion of the detection element main body protruding from a leading end of the metal shell. The side wall has introduction holes formed therein which allow gas to be introduced. The porous protection layer includes a first portion; and a second portion provided on a base end side with respect to the first portion and having a progressively reduced thickness in a direction toward a leading end of the detection element. The second portion is disposed closer to the base end of the detection element than the introduction holes in the axial direction.04-23-2009
20090084159High-Performance Flexible Hydrogen Sensors - Single-walled carbon nanotubes (SWNTs) are decorated with metal nanoparticles to form high-performance flexible hydrogen sensors. The special process to form the high-performance flexible hydrogen sensors can combine a dry transfer printing technique and modification of SWNTs with palladium (Pd) nanoparticles to provide high-performance hydrogen sensors with excellent mechanical flexibility on plastic substrates. Two approaches can be used to decorate the SWNTs. One is physical deposition, such as electron beam evaporation (EBE) and the other is electrochemical deposition which can selectively grow palladium nanoparticles on the surface of the SWNTs, resulting in significantly decreasing the use of palladium. Preferably, the Pd nanoparticles are deposed on the SWNTs in a discontinuous arrangement so that the Pd nanoparticles are spaced away from each other to form individual discontinuous Pd nanoparticles rather a continuous Pd film. Advantageously, the SWNTs are arranged with substantial semiconducting pathways. Desirably, the high-performance flexible hydrogen sensors have an excellent response and recovery time, provide superior sensitivity for detecting hydrogen, and are bendable to conform to the contours of other structures.04-02-2009
20120192623SYSTEM AND METHOD FOR AUTOMATICALLY ADJUSTING GAS SENSOR SETTINGS AND PARAMETERS - A system and method are disclosed including an automatic sensor excitation voltage adjustment feature, a multi-range concentration feature, and a single calibration feature. The automatic sensor excitation voltage adjustment feature may include a transmitter having an associated microprocessor that provides an initial voltage to an associated sensor. The sensor may include a microprocessor, and as the voltage changes a correction signal may be relayed from the sensor microprocessor to the transmitter microprocessor. The correction signal may be used by the transmitter microprocessor to adjust the voltage applied to the sensor. The multi-range concentration sensor feature may include an amplifier associated with the sensor/microprocessor to create gain settings used to optimize sensor resolution by changing a gain value associated with the sensor. This, in turn, enables a single sensor to be used for a variety of different concentration ranges, as desired by a user. The single calibration feature enables a sensor to be calibrated at a single gas concentration value, and thereafter be used for a variety of different concentration range applications. Other embodiments are described and claimed.08-02-2012
20130213118FUEL PROPERTY DETECTING DEVICE - A fuel property detecting device includes a passage member, an electrode holding member, a first electrode having a distal end part on a fuel passage-side immersed in fuel in the fuel passage, a second electrode formed radially inward of the first electrode in a tubular shape to extend in an axial direction, spaced away from the first electrode, and having one end part on the fuel passage-side immersed in fuel in the first electrode, an elastic member, and an insulating member. The elastic member is located on the fuel passage-side relative to the holding member to liquid-tightly seal a clearance between the first electrode and the passage member. The insulating member is located on the fuel passage-side relative to the holding member and disposed between the one end part and the other end part of the second electrode to liquid-tightly seal a clearance between the first and second electrodes.08-22-2013
20120103068HEAD SPACE SAMPLING DEVICE AND METHOD FOR DETECTING LEAKS IN SAME - The present invention relates to methods and systems for detecting leaks in a head space sampling device. One exemplary method for detecting leaks in a head space sampling device includes establishing fluid communication between a head space and a pressurization gas conduit. Gas pressure and flow rate are monitored within the pressurization gas conduit during pressurization of the head space. Changes in monitored gas pressure and flow rate are used to evaluate whether a leak exists within the head space sampling device or the vial containing the head space. One exemplary head space sampling device includes a conduit for receiving a pressurization gas, flow and pressure sensors for measuring gas flow and pressure within the conduit, a ventilation valve, a pressure valve for controlling gas flow through the conduit, and a controller for processing and controlling pressure and flow through the conduit.05-03-2012
20120031171GAS SENSOR AND METHOD FOR MAKING THE SAME - In a gas sensor, when an arithmetical mean roughness Ra of an inner periphery of a metal tube 02-09-2012
20100242574PROTECTIVE HEATED SCREEN FOR ELEMENT - A protective heated screen for an element of a sensor surrounds a portion of the element and reduces and/or minimizes the propensity for liquid droplets to come in contact with the heated element. The screen can allow fluid flow therethrough to allow the sensor element to come in contact with the fluid stream. The screen can be in continuous heat-transferring contact with the sensor element such that both the sensor element and screen are at a temperature significantly greater than the ambient temperature. Liquid droplets contacting the heated screen may evaporate such that the liquid droplets do not come in contact with the sensor element. The screen can also break down the liquid droplets into smaller droplets such that the thermal stress created by the droplets contacting the heated element is reduced over that caused by a larger droplet.09-30-2010
20120192624Ignition System - An ignition system (08-02-2012
20100000293GAS SENSOR - A gas sensor including: a gas sensing element including first and second ceramic layers. The first ceramic layer has a first through hole and a first through hole conductor covering an inner surface thereof The first ceramic layer includes a first conductor which includes: a first peripheral conductive portion electrically connected to the first through hole conductor; a first lead portion that is narrower than the first peripheral conductive portion; and a first contact conductive portion that is wider than the first lead portion. The first peripheral conductive portion, the first lead portion and the first contact conductive portion are integrally formed and arranged in this order in a longitudinal direction. The second ceramic layer includes a second conductor electrically connected to at least the first contact conductive portion.01-07-2010
20090071231GAS SENSOR - A gas sensor has a sensor element, extending axially, that detects a particular gas component in a gas under measurement, a metal housing causing the end of the sensor element to protrude farther than the end thereof to expose it to the gas under measurement and that surrounds the periphery of the sensor element and an outer tube disposed at the rear end inside the metal housing and a seal member that is disposed farther to the rear than the detection element and also inside the rear end of the outer tube, and that has formed therein a atmosphere-introduction hole passing therethrough in the axial direction, the gas sensor further having a crimped part, formed in the outer tube, for the purpose of holding the seal member a hollow-cylindrical member in contact with the inner peripheral surface of the atmosphere-introduction hole so as to oppose the crimped part, and a metal filter that joins to the hollow-cylindrical member at the rear end of the hollow-cylindrical member and also farther to the rear than the crimped part.03-19-2009
20110126612GAS SENSOR - Disclosed is a gas sensor in which electrode pins including a plurality of electrode pins (06-02-2011
20130186177Sensor Element, Method of Making the Same, and Sensor Device Including the Same - A sensor element (07-25-2013
20110083490GAS SENSOR - A gas sensor includes an internal space, diffusion control part, pumping cell, and measuring cell. The diffusion control part communicates with the internal space and has a slit-like shape with a smaller thickness than that of the internal space. The pumping cell pumps out oxygen from the internal space when voltage is applied between a first electrode formed on a surface of the internal space and a second electrode formed outside the internal space. The measuring cell measures a current flowing between a third and fourth electrodes when a voltage is applied between the third and fourth electrodes. The third electrode is formed in the diffusion control part, and can reduce an oxide gas component in a predetermined gas component to which a predetermined diffusion resistance has been applied by the diffusion control part. The fourth electrode is formed in a part different from the diffusion control part.04-14-2011
20110239739METHOD OF MANUFACTURING GAS SENSOR, AND GAS SENSOR - The present invention relates to improvement in the corrosion resistance of a weld joint between a metal shell and an outer casing. As a solution to this object, a metal shell 10-06-2011
20090031787SYSTEM AND METHOD FOR GATHERING DIAGNOSTIC INFORMATION IN A PROCESSING PATH OF A COAL GASIFICATION SYSTEM - A system and method for gathering diagnostic information relating to an operating condition of a gas stream or processing path of a coal gasification system is disclosed. The information is gathered by deploying one or more specially constructed modules or seeds that proceed through the gas stream of the coal gasification system as part of the mass flow of the gas stream. The seed may be physically recoverable in which an outer material of the seed ablates when exposed to a predetermined temperature of the gas stream. The seed may be physically non-recoverable in which electronic circuitry transmits a signal to a receiver relating to the temperature of the gas stream.02-05-2009
20080257015Graphitic-carbon-nanofiber/polymer brushes as gas sensors - A composition of matter including at least one graphitic-carbon-nanofiber/polymer brush. A method of making the graphitic-carbon-nanofiber/polymer brush includes covalently bonding a polymer to a surface of a graphitic-carbon-nanofiber by atom-transfer-radical-polymerization. An apparatus includes an analyte sensor including at least one graphitic-carbon-nanofiber/polymer brush. A method includes detecting an analyte including exposing at least one graphitic-carbon-nanofiber/polymer brush to the analyte.10-23-2008
20100064771TRANSITION METAL-DOPED OXIDE SEMICONDUCTOR EXHIBITING ROOM-TEMPERATURE FERROMAGNETISM - An oxide semiconductor doped with a transition metal and exhibiting room-temperature ferromagnetism is disclosed. The transition metal-doped oxide semiconductor is preferably manufactured in powder form, and the transition metal is preferably evenly distributed throughout the oxide semiconductor. The preferred embodiments are iron-doped tin dioxide and cobalt-doped tin dioxide. Gases may be detected by passing them across a material and measuring the change in magnetic properties of the material; the preferred material is iron-doped tin dioxide.03-18-2010
20110247396SENSOR SYSTEM WITH CLOSE-LOOP-ADSORPTION CIRCULATION - A detection and identification system includes a sensor unit (10-13-2011
20110061446SELECTIVE NANOPROBE FOR OLFACTORY MEDICINE - An apparatus is for detecting the presence of selected gaseous compounds indicative of a medical condition includes a probe having one or more sensor elements having a conductivity which is responsive to the presence of selected gaseous compounds, at least one sensor element containing a transition metal oxide selected from the group consisting of WO03-17-2011
20110061447BIOLOGICAL AGENT DETECTOR - A biological agent detector detects the presence of any biological agents, such as anthrax or other biological warfare agents, in a sample of air. The biological agent detector includes a bio-concentrator that concentrates an aerosol and a pyrolyzer portion including two detecting devices. One detecting device operates in a sample collection mode and collects a sample of air when the other detecting device operates in a sample analysis mode and analyzes a sample of air. After a predetermined amount of time, the detecting devices switch functions, providing continuous sampling of air.03-17-2011
20130186176GAS-MEASURING PROBE FOR DETERMINING THE PHYSICAL CHARACTERISTIC OF A MEASURING GAS - A gas-measuring probe for determining a physical characteristic of a measuring gas, in particular the concentration of a gas component or the temperature or pressure of the measuring gas, which includes a sensor element accommodated in a housing, at least one connection cable for the sensor element having an electrical conductor, which is enclosed by an insulation sheath and contacts the sensor element, and a cable channel sealing the housing end, which has at least one axial cable feedthrough through which the connection cable is guided out of the housing. To achieve long-lasting sealing at the cable-exit end of the housing even at higher temperatures, the insulation sheath of the connection cable is at least regionally welded to the cable wall of the cable feedthrough. To this end, a tube made of a material that fuses with the insulation sheath and the cable channel when heated is slipped over the cable section of the connection cable lying inside the cable channel.07-25-2013
20120118045INTEGRATED OPTOELECTROCHEMICAL SENSOR FOR NITROGEN OXIDES IN GASEOUS SAMPLES - A gas-phase detection system based on detecting optochemical and optoelectrochemical signals. The sensing platform is particularly powerful for detection of nitrogen oxides at low ppbV concentrations. The optochemical analysis is based on the color development due to a chemical reaction taking place in an optimized material. The electrochemical analysis can be based on the doping level or redox potential changes of an electrochemical sensor; and optoelectrochemical detection can be based on a combination of the electrochemical and optoelectrochemical methodologies. Each independent signal can be simultaneously detected, increasing the reliability of detection.05-17-2012
20090126459FUNCTIONAL ASSEMBLY AND METHOD OF OBTAINING IT - The invention relates to a functional assembly, for instance a biosensor, and to a method to obtain it. The assembly comprises a functional element (05-21-2009
20110041588SENSOR FOR DETECTING HYDROCARBONS - A fluid sensor comprises a sensor housing, a sensor package, an actuator and a switch. The sensor package is disposed within the sensor housing and includes first and second screens and at least one sensing membrane. The sensing membrane is disposed between the first and second screens and is adapted to expand when exposed to a predetermined quantity of a first predetermined fluid. The actuator is disposed proximate the sensor package within the sensor housing and moveable between a first position and a second position through an intermediate position. The switch is disposed proximate the actuator and is operable between closed and open positions. When the actuator is in the second position at least a portion of the actuator depresses the switch to control an electrical circuit connected therewith.02-24-2011
20110113858GAS CHARGE CONTAINER, ATOM PROBE APPARATUS, AND METHOD FOR ANALYZING HYDROGEN POSITION IN MATERIAL - A gas charge container includes a sample holder which holds a needle-shaped material, a deutrium gas supply portion which charges a deutrium gas into the needle-shaped material held by the sample holder, and a heating portion which heats the needle-shaped material held by the sample holder. The needle-shaped material is cooled by blocking the heat generated by the heating portion after the needle-shaped material is heated by the heating portion.05-19-2011
20110259083HYDROGEN SENSOR AND METHOD OF MANUFACTURING THE SAME - A novel method of manufacturing a hydrogen sensor is disclosed. The method includes the steps of forming a thin film made of a transition metal or an alloy thereof on a surface of an elastic substrate, and forming a plurality of nanogaps in the thin film formed on the surface of the elastic substrate by applying a tensile force to the elastic substrate. The nanogaps are formed as the thin film is stretched in a direction in which the tensile force acts while being contracted in a direction perpendicular to the direction in which the tensile force acts when the tensile force is applied, and is contracted again in the direction in which the tensile force is released while being stretched again in the direction perpendicular to the direction in which the tensile force is released when the tensile force is released.10-27-2011
20110259084GAS SENSOR UNIT - A gas sensor unit including: a gas sensor which includes a gas detection element, a sensor terminal and a cylindrical surrounding body which surrounds a periphery of the rear end of the sensor terminal; and a sensor cap. The sensor cap includes a cap terminal and a cap body which has an insertion hole surrounding a part of the rear end of the surrounding body. The cap body is formed of a resin, and a cap body seal surrounding the surrounding body is fitted into the insertion hole. The cap body includes a rear end seal pressing portion that contacts a rear end side surface of the cap body seal; and a leading end seal pressing portion that contacts a leading end side surface of the cap body seal, which holds the cap body seal.10-27-2011
20100024524Protective Cap for a Gas Sensor, and a Gas Sensor - A protective cap is provided for a sensor having a sensor element, which is disposed in a housing and includes a connection side and a measuring side, for determining gases in gas mixtures. The protective cap delimits a sensor element chamber having at least one flow outlet and an antechamber that has at least one flow inlet and is in fluid connection with the sensor element chamber in order to protect the sensor element on the measuring side. A condensate separator is provided in the antechamber. A device for deviating the flow is provided between the sensor element chamber and the antechamber and a device for accelerating the flow is provided on a flow outlet side of the sensor element chamber. A gas sensor is equipped with the protective cap.02-04-2010
20090019920SYSTEM AND METHOD FOR MEASUREMENT OF RADIOACTIVITY CONCENTRATION OF A RADIOPHARMACEUTICAL - A system and method for measurement of radioactivity concentration of a radiopharmaceutical are disclosed. The radiopharmaceutical may be a radioactive tracer solution including a tracer solution and a buffer solution. The system may include a vial that receives the tracer solution and the buffer solution; a scale; a radioactivity measuring device; and a controller that determines the radioactive concentration based on a measured radioactivity of the tracer solution and the buffer solution in the vial, and a weight of the tracer solution and the buffer solution in the vial. The method may include the steps of (1) transferring the tracer solution into a vial; (2) measuring a radioactivity of the tracer solution in the vial; (3) determining a weight necessary to achieve a desired radioactivity concentration; and (4) diluting the tracer solution in the vial to the determined weight with a buffer solution.01-22-2009
20120055234GAS SENSOR AND MANUFACTURING METHOD THEREFOR - A gas sensor (03-08-2012
20120006099GAS SENSOR ELEMENT AND GAS SENSOR - A gas sensor element of the present invention detects concentration of a specific gas within a measured gas. The gas sensor element comprises: a wiring layer formed inside a sensor; an insulating layer covering a front surface of the wiring layer; an electrode terminal provided on a main surface of the insulating layer on an opposite side of the insulating layer from the wiring layer, and electrically connected to the wiring layer; and an intermediate layer interposed between the electrode terminal and the wiring layer, and electrically connecting the electrode terminal and the wiring layer. The electrode terminal is composed of a first metal material. The wiring layer is composed of a second metal material. The intermediate layer is composed of whichever of the first metal material and the second metal material has the lower melting point.01-12-2012
20120006098Method And Device For Measuring The Concentration Of Substances In Gaseous Or Fluid Media Through Optical Spectroscopy Using Broadband Light Sources - The invention relates to a method and to a device for using partially non-stabilized broadband light sources to accurately measure partially broadband-absorbing substances using referencing measuring cells. In order to create a low-cost, high-resolution, and at the same time fast spectrographic device for measuring concentrations of substances in fluid or gaseous media that is also suitable for harsh environments, the light radiated by the broadband light sources (01-12-2012
20120055235Carbon monoxide detector, system and method for signaling a carbon monoxide sensor end-of-life condition - A CO detector includes a sensor configured to detect a presence of CO and generate a signal indicative of the presence of CO, and a controller in signal communication with the sensor. The controller is configured to measure a level of detected CO in response to receiving the signal generated by the sensor. The controller is further configured to detect a first trouble condition representative of an end-of-life condition of the sensor, and a second trouble condition different from the first trouble condition.03-08-2012
20110094293Oxygen Monitor - An oxygen monitor which includes a magnetic field device for creating a magnetic field in a gas stream, and a Hall effect device for sensing the strength of the magnetic field in the gas stream. The magnetic field is proportional to the magnetic susceptibility of the oxygen in the stream, which is a function of the partial pressure of the gas, which provides the oxygen purity of the gas.04-28-2011
20120125084CARBON FILM COMPOSITE, METHOD OF MANUFACTURING A CARBON FILM COMPOSITE AND SENSOR MADE THEREWITH - Manufacturing a carbon film composite including depositing a carbon film layer onto a substrate, depositing a catalyst suitable for catalyzing the growth of carbon nanotubes onto the carbon film layer and heating in the presence of a carbon-source gas in a substantially inert environment. A carbon film composite featuring a carbon film layer deposited onto a substrate. The carbon film layer has an active surface that is electrically sensitive to the presence of target chemicals. A chemical sensor featuring such a carbon film composite that also includes a first electrode and a second electrode in electrical contact with an active surface of the carbon film composite and a resistivity monitoring device connected to the first and second electrodes. A method of sensing a target chemical featuring exposing such a carbon film composite to a target chemical and recording a change in resistivity across the carbon film composite.05-24-2012
20120247186NOX GAS SENSOR INCLUDING NICKEL OXIDE - One example includes a sensor for sensing NO10-04-2012
20100050743GAS CONCENTRATION DETECTION APPARATUS AND GAS CONCENTRATION DETECTION SYSTEM - A gas concentration detection apparatus and system including a gas sensor. Voltage Vd generated across detection resistor Rd through which pump current Ip flows is differentially amplified by OP03-04-2010
20090056418Method and System for Groundwater Contaminant Monitoring - A method and system for groundwater contaminant monitoring is described. Groundwater is pumped to a stage above the groundwater table where at least a portion of the groundwater is vaporized. The vapor is sampled using cavity ring down spectrometer and the measured vapor concentration of a contaminant is converted to a liquid contaminant concentration.03-05-2009
20120073358ELECTRODEPOSITED GOLD NANOSTRUCTURES - A mercury vapour sensor in which the sensor surface is a gold substrate, and gold nanostructures with controlled crystallographic facets are strongly adhered to the substrate. A substantial increase in response magnitude and stability of a quartz crystal microbalance (QCM) based mercury vapour sensor is achieved using this sensor surface. The method of forming gold nanostructures on a gold substrate includes the steps of electrodepositing gold onto a gold working electrode from a solution of hydrogen or alkali metal tetrahaloaureate (III) and an additive such as lead acetate at an electro-deposition temperature between 20 and 40° C. and a deposition time of at least 15 seconds. The growth is controlled by the composition of the deposition solution, the temperature and the current density. The deposition rates may be varied as will the deposition times which are preferably about 150 seconds but may be as long as 15 minutes. The preferred deposition solution contains 2.718 g/l of hydrogen tetrachloroaurate(III) hydrate with 0.1 to 0.5 g/l of lead acetate.03-29-2012
20120318045OXYGEN CONCENTRATION SENSOR INPUT DEVICE - An oxygen concentration sensor input device (12-20-2012
20100326169SNIFFING LEAK DETECTOR ACCORDING TO THE REFERENCE MEASUREMENT PRINCIPLE - A sniffing leak detector comprises a handle with a sniffing tip. Located at the sniffing tip is a measurement gas suction opening and a reference gas suction opening. The reference gas suction opening is intended for suctioning ambient gas. The reference gas suction opening is aligned substantially the same as the measurement gas suction opening such that both suction openings are sensitive in the same direction.12-30-2010
20120297861GAS SENSOR ELEMENT AND ITS MANUFACTURING METHOD, AND GAS SENSOR EMPLOYING THE GAS SENSOR ELEMENT - A gas sensor element includes a main body and a protective layer. The main body has four plane portions and four corner portions each of which is formed between one adjacent pair of the plane portions. The four corner portions include a pair of first corner portions that are formed on a porous diffusion-resistant layer side in a lamination direction of the main body and a pair of second corner portions that are formed on a heater layer side in the lamination direction. The protective layer is comprised of an inner protective layer that covers at least the first corner portions of the main body and an outer protective layer that covers the entire outer periphery of the main body and the inner protective layer. The protective layer has a larger average thickness at the first corner portions than at the plane portions of the main body.11-29-2012
20120297860GAS DETECTION APPARATUS AND GAS DETECTION METHOD - A gas is detected using a MEMS gas sensor. The electrical power to a heater in the gas sensor is changed between a low level, a high level suitable for detection of detection target gas, and a 0 level, and, therefore, poisonous gas is evaporated or oxidized at the low level, and the detection target gas is detected at the high level.11-29-2012
20120266658GAS SENSITIVE MATERIAL COMPRISING MICROCRYSTALLINE SELENIUM AND GAS SENSOR USING SAME - The invention provides a gas sensitive material made from microcrystalline selenium (preferably selenium nanowire) and a gas sensor having an element structure wherein the gas sensitive material is disposed between two electrodes. The invention allows for the kind of organic gas to be distinguished, because microcrystalline selenium reacts with organic gas molecules with high sensitivity at room temperature without being influenced by humidity, and the magnitude of change of the value of the current flowing at a fixed voltage varies depending on the kind of an organic gas to be sensed.10-25-2012
20120266657DEVICE AND METHOD FOR CONTROLLING AN EXHAUST GAS SENSOR - A device for controlling an exhaust gas sensor that is alternatively configured as a limiting-current probe or as a two-cell probe. In each case, the probe has a reference cavity made of a ceramic material and a cell made of a material conducting oxygen ions. A controller has one input variable that is a measured sensor voltage dependent on an oxygen concentration in the sealed cell. The other input variable is a reference voltage. The output variable of the controller is a current which is to be applied to the cell and which allows the sensor voltage to be regulated to a predefined value. The device for controlling the limiting-current probe is designed to process the applied current in one of the input variables of the controller.10-25-2012
20110226042CARBON DIOXIDE MEASURING DEVICE - The present invention relates to a carbon dioxide measuring device, and more particularly, to a carbon dioxide measuring device in which a reference electrode signal transfer pattern is formed on one side of a heating unit to connect an electromotive lead wire for measuring carbon dioxide concentration to the outside of a portion at which the heating unit contacts a carbon dioxide sensor to thereby prevent generation of a gap, and a problem that a sealant is diffused into the reference electrode to have an effect on electromotive force is prevented to thereby increase durability and accuracy and also increase reliability of measurement of carbon dioxide concentration.09-22-2011
20110265555METHOD AND APPARATUS FOR VAPOR SIGNATURE WITH HEAT DIFFERENTIAL - A method for sensing analyte. The method includes the steps of sensing one or more parameters in reaction to the presence of one or more analytes and outputting a current therefrom in accordance with level of the sensed parameter by each of a plurality of sensors, each of the plurality of sensors being provided in one or more sensor array columns, selectively heating one or more of the sensor array columns by a heating element, and receiving an output current from one of the plurality of sensors from each of the plurality of sensor arrays by a Voltage Controlled Oscillator (VCO) arranged in a VCO array. The method further includes the steps of generating an output oscillation frequency by each VCO in accordance with the level of the received output current, and counting a number of oscillations over a predetermined time received from each of the plurality of VCOs in the VCO array by a plurality of counters arranged in a counter array.11-03-2011
20110265553METHOD AND APPARATUS FOR DETERMINING A VAPOR SIGNATURE BASED UPON FREQUENCY - A method and apparatus for sensing analyte. The method includes the steps of sensing one or more parameters in reaction to the presence of one or more analytes and outputting a current therefrom in accordance with level of the sensed parameter by each of a plurality of sensors, each of the plurality of sensors being provided in one or more sensor array columns, receiving an output current from one of the plurality of sensors from each of the plurality of sensor arrays by a Voltage Controlled Oscillator (VCO) arranged in a VCO array. The method further includes the steps of generating an output oscillation frequency by each VCO in accordance with the level of the received output current, and counting a number of oscillations over a predetermined time received from each of the plurality of VCOs in the VCO array by a plurality of counters arranged in a counter array.11-03-2011
20080236251Chemical Sensing Apparatuses, Methods and Systems - A microchip based sensor for detecting at least one analyte which includes at least one microelectrode for measuring the electrical resistance of the at least one analyte, and an array of electrospun composite fibers interfaced with at least one of the microelectrodes. The one or more analytes are identified from the resistance pattern of the one or more analytes. Other embodiments can be used to identify and/or quantify one or more of the analytes from the resistance pattern of those one or more analytes.10-02-2008
20130167617METHOD FOR EVALUATING THE QUANTITY OF METHANE PRODUCED BY A RUMINANT USED FOR MEAT PRODUCTION - The present invention relates to a method for determining the quantity of methane produced by a meat ruminant, such as a bovine, i.e., an animal raised and then slaughtered for the sale of its meat, characterized in that it consists in determining the quantity of at least one fatty acid (FA) contained in a reference tissue, namely muscle or adipose tissue, sampled from said ruminant after its death (in grams of fatty acids per kilogram of tissue) and calculating said quantity of methane (in grams of CH07-04-2013
20080223110Sensor - A sensor is provided, in particular a gas sensor for determining the concentration of a gas component in a measuring gas, which has a sensor element that projects from a housing by a measuring-gas-side end section exposed to the measuring gas, and a sheath tube having gas passageways, which is placed over the measuring-gas-side end section and affixed on the housing. To prevent condensation of water vapor contained in the measuring gas in the measuring space enclosed by the housing and the sheath tube, and thus the production of water droplets that reach the hot sensor element, sheath tube and/or sensor element are/is thermally decoupled from the housing. The thermal decoupling is produced using, for instance, a flange sleeve made of a material having poor thermal conductivity, which separates the sheath tube from the housing by a flange and, via a sleeve section, is inserted in the space between the housing and the measuring-gas-side end section of the sensor element.09-18-2008
20090084161HYDROGEN SENSOR - The invention relates to a hydrogen sensor with a radiation source, by means of which electromagnetic radiation is radiated onto a sensor medium, wherein the sensor medium has a transmission coefficient that varies as a function of the concentration of hydrogen in the environment of the sensor medium, and with a detector that detects at least a portion of the radiation transported through the sensor medium. The hydrogen sensor according to the invention is characterized by the fact that a reflector is provided that reflects the radiation transmitted through the sensor medium back to the sensor medium. The hydrogen sensor according to the invention is further characterized by the fact that the sensor medium incorporates clusters containing or consisting of a palladium alloy, yttrium, scandium, at least one lanthanide, at least one actinoide, tungsten oxide and/or vanadium oxide, and/or a mixture or compound of these materials.04-02-2009
20110265554METHOD AND APPARATUS FOR VAPOR SIGNATURE WITH HEAT DIFFERENTIAL - An apparatus for sensing analyte is provided. The apparatus may include a plurality of sensor array columns, each sensor array column including a plurality of sensors, each sensor being adapted for sensing one or more parameters in reaction to the presence of one or more analytes and output a current therefrom in accordance with level of the sensed parameter, a heating element for selectively heating one or more of the sensor array columns, a Voltage Controlled Oscillator (VCO) array including a plurality of VCOs, each VCO adapted to receive an output current from one of the plurality of sensors from each of the plurality of sensor arrays and for and generating an output oscillation frequency in accordance with the level of the received output current, and a counter array including a plurality of counters, each counter adapted to receive an output from a corresponding VCO and count a number of oscillations over a predetermined time.11-03-2011
20080202209Sensor - The invention provides a sensor including a first sensor element formed in a first substrate and at least one optical element formed in a second substrate, the first and second substrates being configured relative to one another such that the second substrate forms a cap over the first sensor element. The cap includes a diffractive optical element and an aperture stop which collectively determine the wavelength of incident radiation that is allowed through the cap and onto the at least one optical element.08-28-2008
20080196480SENSOR CONTROL APPARATUS - A sensor control apparatus includes an applied voltage control circuit connected to the positive terminal of a sensor element. The applied voltage control circuit includes a reference power supply and a noninverting amplifier circuit connected to the reference power supply. An AC power supply circuit, a buffer and a current measurement resistance are connected in series to the negative terminal of the sensor element with the current measurement resistance disposed between the AC power supply circuit and the sensor element. One terminal of the current measurement resistance, which is on the side opposite to the sensor element, is held at a reference voltage (center voltage of an AC voltage generated from the AC power supply circuit). Voltage at an intermediate point between the current measurement resistance and the sensor element is inputted via a low-pass filter to the noninverting amplifier circuit of the applied voltage control circuit.08-21-2008
20080196479Fluid Detector - A device is disclosed for sensing a fluid, such as in a ventilation duct. In at least one embodiment, the device includes a sensing element, a housing accomodating the sensing element, and a supply duct and a discharge duct, which ducts at one end commucicate with the housing and which ducts at the other end communicate with an object that is to be sensed. In at least one embodiment, the housing is formed with a first passage portion for the fluid that is to be sensed; that the sensing element is positioned in the first passage portion; and that the supply duct opens into said first passage portion and that the discharge duct is connected to a discharge opening formed in the first passage portion and positioned at a considerable peripheral distance from the mouth of said supply duct in the first passage portion, so that the fluid that is to be sensed is actively made to pass the sensing element.08-21-2008
20090090170ETCH RESISTANT GAS SENSOR - A gas sensor for sensing chemical gases utilizes a metal oxynitride as the sensing material, which changes its conductivity when exposed to the analyte gas. The change in conductivity is measured for the sensor output. The metal may be either tungsten or molybdenum.04-09-2009
20120272720HEATABLE GAS SENSOR AND METHOD FOR THE PRODUCTION THEREOF - The invention relates to a heatable gas sensor (11-01-2012
20110283776CHEMICAL SAMPLING AND MULTI-FUNCTION DETECTION METHODS AND APPARATUS - This invention describes a sample collection method that could release and collect residues of explosives and other chemicals from a surface; the described method is implemented into a compact detection system that can be used as a “wand” for screening chemicals residues on human body. The wand configuration includes multiple functionalities for contrabands detection. The invention further describes a desorption method that can control chemical fragmentation pathway during desorption. The invention describes a combined detection device that detects trace chemicals and metal at the same time.11-24-2011
20120017668CONDUCTIVE ORGANOMETALLIC FRAMEWORK - The disclosure provides organometallic frameworks, catalysts and sensors. In one aspect, the organometallic framework comprises di-isocyanide group.01-26-2012
20120036919NANOWIRE SENSOR HAVING A NANOWIRE AND ELECTRICALLY CONDUCTIVE FILM - A nanowire sensor includes a first electrode, a second electrode, and a sensing element connecting the first electrode and the second electrode. The sensing element includes at least one nanowire connecting the first electrode and the second electrode and an electrically conductive film covering the at least one nanowire and extending between and contacting the first electrode and the second electrode, wherein conductance of the electrically conductive film is configured to change in the presence of at least one species to enable detection of the at least one species.02-16-2012

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