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Document Title |
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7588726 |
Vapor analysis apparatus and method
A vapor analysis system comprising a vapor analyzer capable of collecting and analyzing a vapor sample for detection of a compound that may be contained within the vapor sample. A controller is...
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7537737 |
Installation structure for gas sensor
An installation structure for a gas sensor capable of detecting gas concentration in a highly accurate manner is provided. The installation structure for a gas sensor which detects concentration of...
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7526942 |
Contact combustion gas sensor
A contact combustion-type gas sensor that can maintain its initial sensitivity over a long period of time in the presence of silicon vapor, wherein an induction portion 5 of a gas detecting...
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7479255 |
Gas sensor
A hydrogen sensor 25 has a fitting base plate 29 in which a gas-sensing chamber 34 is formed, a specimen gas intake 35 formed on said fitting base plate 29, opening toward an exit passage...
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7357015 |
Gas concentration sensor, hydrogen purification unit using this and fuel cell system
In order to provide a step capable of reliably detecting a CO concentration in a reformed gas at low cost and a hydrogen purifier capable of fully exerting a function of a CO purifying catalyst, a...
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7338640 |
Thermopile-based gas sensor
A method of manufacturing a sensor is provided. The method includes disposing a sacrificial layer on a substrate, disposing a low-thermal-conductivity layer on the sacrificial layer, and disposing...
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7329389 |
Sensor device and method for qualitative and quantitative analysis of gas phase substances
New sensors and methods for qualitative and quantitative analysis of multiple gaseous substances simultaneously with both high selectivity and high sensitivity are provided. The new sensors rely on...
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7297549 |
Method of determining measurement bias in an emissions monitoring system
A method of determining bias in a measurement of a constituent concentration level in a sample gas is provided. The method comprises establishing a sample gas flow from an emission stream into a...
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7265560 |
Temperature compensated vapor sensor
A chemiresistor sensor system that compensates for changes in resistance caused by changes in ambient temperature, thereby increasing the accuracy of the sensor system's ability to detect target...
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7255836 |
Analytical sensitivity enhancement by catalytic transformation
A device and method for quantifying an impurity in an input gas stream. The device and method employ a catalyst to convert the impurity to a detectable species in an output gas stream, and the...
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7223328 |
Sensors for reducing gas molecules
Provided is a gas molecule sensor, characterized in that the sensing element is a polycrystalline tin oxide film having a thickness less than 1 μm. The sensing element is produced by electrolytic...
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7211222 |
Gas sensor
A powder filler is stuffed in a filler space defined between a housing and a gas sensing element so as to airtightly seal a clearance between the housing and the gas sensing element. The powder...
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7189363 |
Gas detector
Of a gas detector 100, a chamber 105 formed between a center cover 150 and a cover 160 is a part of an air flow channel AF. A first shielding plate 165 is provided in the chamber 105. ...
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7112447 |
Hand held gas analyzer
A lightweight and portable analyzer is provided. At least one component of the analyzer is made from a lightweight material, such as ABS. A manifold can have a plate and gas passages ultrasonically...
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7056474 |
Hydrocarbon sensor and collector
A hydrocarbon sensor and collector. An element that is capable of absorbing and releasing hydrocarbons is positioned in the air intake system of a vehicle, upstream from the engine and wholly in...
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7048891 |
Catalyst deterioration detecting apparatus
A heat generation amount qr/r per unit flow amount of combustible substances supplied to a catalyst is estimated based on upstream and downstream temperature information and supplemental engine...
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7041256 |
Poison resistant combustible gas sensors and method for warning of poisoning
A poison resistant combustible gas sensing element, a method for its production and a method for determining poisoning of the element. The element includes an electric heating element, an inner...
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7007542 |
Method of warning of poisoning in poison resistant combustible gas sensors
A poison resistant combustible gas sensing element, a method for its production and a method for determining poisoning of the element. The element includes an electric heating element, an inner...
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6960476 |
Method and apparatus for analyzing mixtures of gases
Disclosed herein is a method and apparatus for analyzing, sensing and measuring the concentrations of various gases, including NO x , hydrocarbons, carbon monoxide and oxygen, in a multi-component...
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6916664 |
Flammable vapor sensor
A method and apparatus for sensing a flammable vapor are described herein. Initially, a first thermal conductivity of a vapor at a first temperature and a second thermal conductivity of the vapor...
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6913731 |
Oxygen probe
Intended for application on ducts through which flow a fluid at a high temperature, and particularly at a high pressure, comprising two bodies ( 4 ) and ( 8 ) which axially screw onto each other,...
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6911180 |
Catalytic sensor
A combustible gas sensor includes an active element in electrical connection with a measurement circuit. The measurement circuit includes a thermistor network to compensate for the effect of...
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6849238 |
Measuring sensor for gases
The measuring sensor, particularly a lambda probe, has a ceramic sensor member retained at a high temperature during measuring operation. It is shielded from water droplets, carried along in the...
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6838287 |
Fluid mixture composition sensor
An improved, affordable, and rapid fluid mixture composition or process monitor based on a thermal microstructure sensor. This is preferably accomplished with a microbridge sensor design that has...
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6827903 |
Inert gas fusion analyzer
A single pass analyzer includes multiple infrared sensors, a catalytic converter, a scrubber and a thermal conductivity cell all coupled in series to provide a single pass (i.e., one sample)...
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6726882 |
Hydrocarbon detector device
A hydrocarbon detector ( 20 ) includes a gas stream delivery element ( 26 ) configured to discharge a carrier gas ( 70 ) onto a surface ( 24 ). The carrier gas ( 70 ) serves to volatilize a...
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6719950 |
Miniaturized exhaust gas sensor
An exhaust gas sensor includes a housing and a sensor element supported by the housing. The sensor element includes a support member having an exhaust side, a reference side, and an aperture...
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6715338 |
Apparatus and method for detecting flammable gas in a gas mixture
An apparatus and a method for detecting a flammable gas in a gas mixture is provided. The apparatus includes a chamber that is equipped with an igniting device and a temperature sensor such that a...
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6691554 |
Nanocrystalline films for gas-reactive applications
A gas sensor for detection of oxidizing and reducing gases, including O 2 , CO 2 , CO, and H 2 , monitors the partial pressure of a gas to be detected by measuring the temperature rise of an...
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6622543 |
Gas detection sensor
A gas detection sensor permits precise measurement of the concentration of flammable gas in a detection or subject gas and the concentration of oxygen in a detection gas containing flammable gases....
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6565812 |
Gas sensor and method for producing it
A base is provided with a concave and three leads, and the central lead is bent to the side opposite to the concave, and the other leads are bent to the side of the concave. A central electrode of...
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6419880 |
Systems and methods for catalyst reactivation
The invention includes systems and methods which allow reactivation of supported noble metal catalysts. The method involves heating the catalyst in the presence of a gaseous hydrocarbon in the...
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6346420 |
Method of analyzing a gas mixture to determine its explosibility and system for implementing a method of this kind
In this method of analyzing a gas mixture containing at least one inflammable gas to determine its explosibility, a resistive heating element ( 15 ) is energized in an analysis enclosure ( 12 )...
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6117393 |
Multilayered gas sensor
A multilayered gas sensor for detecting the presence of gases in air. In particular, sensors are described for sensing hydrocarbons and nitrogen oxides. An additional feature of the invention is to...
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6079873 |
Micron-scale differential scanning calorimeter on a chip
A differential scanning microcalorimeter produced on a silicon chip enables microscopic scanning calorimetry measurements of small samples and thin films. The chip may be fabricated using standard...
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6074882 |
Device determining a concentration of a gas mixture
In order to determine a concentration of a gas mixture, especially a hydrogen concentration of a containment atmosphere of a nuclear power station, a temperature change resulting from a catalytic...
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6046054 |
Semiconducting oxide gas sensors
The selectivity of response of resistive gas sensors to specific gases or vapors is improved by the selection of specified gas-sensitive materials which are not previously known for the...
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6015533 |
Sensor housing for a calorimetric gas sensor
A sensor housing (10) for directing the flow of a gas over two sensitive regions (53, 54) of sensing device (52) includes an inner shroud (12) surrounding the sensing device (52). The inner shroud...
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5959190 |
Sensor for measuring the composition of mixtures of hydrogen and oxygen gas
A sensor is provided for precisely measuring the composition of mixtures of hydrogen and oxygen gas. The sensor has an active surface, at which hydrogen and oxygen are catalytically converted into...
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5922287 |
Combustible gas sensor and method for detecting deterioration of catalyst
A combustible gas sensor having a pair of temperature sensor sections is here disclosed. One of the pair of temperature sensor sections is covered with porous oxidizing catalytic layers (23, 24)...
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5902556 |
Catalytic gas sensor
A catalytic detector for a flammable gas comprises a substrate and a sensing structure suspended from the substrate. The sensing structure has a combined heating element and temperature sensing...
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5895629 |
Ring oscillator based chemical sensor
A chemical sensor couples a material that changes temperature in response to a chemical condition with an oscillator. The oscillator is coupled to the material to detect the change in temperature...
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5879630 |
Semiconductor chemical sensor device and method of forming a thermocouple for a semiconductor chemical sensor device
A semiconductor chemical sensor device (2) comprises a sensitive layer (4) for detecting specific chemicals and a heater for heating the sensitive layer, which is formed by a heater portion (6) of...
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5876673 |
High sensitivity phase transformation-based oxygen sensors for proportional control
The invention is a sensing method and an oxygen sensor for detecting a change of oxygen partial pressure in an ambient atmosphere through a change of a measurable physical property of a sensing...
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5864148 |
High-temperature gas sensor
A high-temperature gas sensor for the detection of the heat tone of combustible gases includes a semiconducting ceramic layer with thermistor properties. The semiconducting ceramic layer is formed...
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5863803 |
Method and apparatus for modulating a gas sample for a calorimetric gas sensor
A method and apparatus is provided for modulating flux of combustibles reacting with oxygen impinging on a calorimetric gas sensor. The method includes the steps of enclosing a sensing element and...
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5827415 |
Oxygen sensor
A self-contained, integrated-structure, miniature, electrochemical-type oxygen sensor is described which uses an oxygen ion conducting solid electrolyte. An encapsulated metal-metal oxide reference...
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5824271 |
Gas sensor
A substrate carrying a first electrode and a second electrode, the first and second electrodes being disposed adjacent to one another, the first electrode being disposed between the substrate and a...
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5813764 |
Catalytic differential calorimetric gas sensor
A catalytic differential gas combustible microcalorimeter sensor for monitoring the exhaust gas conversion for monitoring the exhaust gas conversion efficiency of a catalytic converter. The...
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5800783 |
NOx sensor for exhaust gas and method for producing same
An NOx sensor for an exhaust gas is made from β-Nb 2 O 5 as a primary component and TiO 2 as a subsidiary component. The TiO 2 content is in a range of 0.1% by weight ≤TiO 2 ≤ 20% by...
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