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7629177 |
Method and apparatus for introduction of high boiling point streams at low temperature
The present invention is a method and apparatus for sampling a high-temperature gaseous process stream containing components with high boiling points. The sampling system is especially suited for...
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7628959 |
Hydrogen gas sensor
A hydrogen gas sensor and/or switch fabricated from arrays nanowires composed of metal or metal alloys that have stable metal hydride phases. The sensor and/or switch response times make it quite...
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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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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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7402284 |
Orientation device for a gas analyzer
A method and apparatus for determining the orientation of a gas analyzer. Because condensation can build-up in a filter of the gas analyzer, it needs to be purged from the analyzer so that accurate...
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7395692 |
Portable gas meter
A portable, preferably explosion-proof gas meter is improved in respect to shock loads and has a cylindrical measuring cell ( 5 ) and an evaluating circuit on a printed circuit board ( 6 ). The...
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7387764 |
Contained oxygen analyzing apparatus and contained analyzing method
An apparatus for analyzing the amount of gas in a solid sample such as a contained oxygen analyzing apparatus and method utilizing a preliminary reducing furnace which can be connected to an...
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7374722 |
System for taking a gas sample able to contain particles of suspended materials
The sampling system of the invention includes a column comprising a first separator associated with a first collector so as to extract particles whose diameter is larger than a first diameter, and...
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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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7333204 |
Method and device for analysing a gas likely to contain particles or suspended aerosols
The present method uses a spectrophotometric and/or ionisation detection device in which the gas to be analyzed and illuminated by a light source emitting in a range of wavelengths distinct from...
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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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7254984 |
Sensor
A sensor for measuring a physical property of a measuring gas, in particular the oxygen concentration or the temperature in the exhaust gas of an internal combustion engine in a motor vehicle, has...
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7255834 |
Method and devices for improving the dynamic flash combustion reaction connected with gas chromatography for the elemental analysis of C H N S O
A method and device are provided for dynamic flash combustion reaction connected with gas chromatography for the elemental analysis of C H N S O in an automatic elemental analyzer. A combustion...
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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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7229833 |
Method and a device for measuring, by photo-spectrometry, the concentration of harmful gases in the fumes through a heat-producing plant
A method for measuring the concentration of harmful gases in flue gases through a heat-producing plant that includes a combustion space and a device located downstream of the combustion space, the...
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7223607 |
Process and device for the detection of hydrocarbons in a gas
The invention relates to a process for the detection of hydrocarbons other than methane in a gas predominantly or essentially comprising oxygen, as well as methane and the said hydrocarbons other...
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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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7201877 |
Device and method for detecting sulfuryl fluoride
A device for detecting sulfuryl fluoride, in which the gas specimen to be examined is subjected to pyrolysis with ensuing detection of a pyrolysis product, is to be improved for the sake of...
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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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7186381 |
Hydrogen gas sensor
A hydrogen gas sensor and/or switch fabricated from arrays nanowires composed of metal or metal alloys that have stable metal hydride phases. The sensor and/or switch response times make it quite...
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7141211 |
System for determining total sulfur content
In order to determine the total sulfur content of a sample ( 1 ), the sample is uniformly combusted with a flame ( 8 ). The combustion product sulfur dioxide is fed to a gas chromatograph ( 15 ) in...
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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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7090806 |
Portable oxygen sensor analyzer
A portable, inexpensive, and easy to operate vehicle oxygen sensor analyzer shows, in real time, on an ultra-bright LED display, the dynamic operation of the oxygen sensor, simulates sensor signals...
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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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6987459 |
Portable combustible gas detector
A portable detector of combustible or explosive gases incorporates a polymeric-type sensor or sensor array coupled to a programmed processor which carries out an evaluation of one or more signals...
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6973819 |
Differential compensated vapor sensor
Vapor sensing systems and methods are disclosed. An appliance such as a gas water heater, clothes dryer, and the like can be associated with a controller for controlling the appliance. A vapor...
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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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6954702 |
Gas monitoring system and sidestream gas measurement system adapted to communicate with a mainstream gas measurement system
A method and apparatus for interfacing a plurality of gas measurement systems, including a mainstream and a sidestream gas measurement system, to a host system via an interface unit. The present...
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6933151 |
Diagnostic system for monitoring catalyst performance
A diagnostic system for monitoring catalyst performance in an exhaust system comprises a plurality of treatment devices catalytically treating an exhaust gas stream, and a plurality of gas sensors...
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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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6866819 |
Sensor for detecting small concentrations of a target matter
A sensor for detecting a target matter includes a chemical sensitive layer that is operable to react when exposed to the target matter and a piezoresistive material coupled to the chemical...
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6855557 |
Detection of base contaminants in gas samples
A detection system for detecting contaminant gases includes a converter, a detector, a primary channel for delivering a target gas sample through the converter to the detector, and at least two...
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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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6819252 |
Carbon monoxide and smoke detection apparatus
A smoke sensor and a carbon monoxide sensor are integrated into a common detector housing. The smoke sensor is coupled to a smoke detector control integrated circuit which generates a binary output...
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6773674 |
Thermal analysis for detection and identification of explosives and other controlled substances
The invention features methods and systems for detecting the presence of an energetic material in a sample in which the presence of the energetic material is unknown. The method includes the steps...
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6756016 |
Gas sensor
A gas sensor for the detection of gases comprises a housing and an active element disposed within the housing. The active element is surrounded by a porous insulating material having a bulk density...
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6736001 |
Device for the non-contact storage of components
A semiconductor gas sensor, for example for measuring CO, NO x , O 3 , etc., exhibits a heatable sensor element for measuring gas concentrations, and a housing in whose interior the sensor element...
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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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