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6539775 |
Method and apparatus for the measurement of the interchangeability of LPG/air mixtures with natural gas
An apparatus for the continuous measurement of the interchangeability of LPG/Air Mixtures with Natural Gas, having a sensor that measures the relative density (specific gravity) of an LPG/air...
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6536946 |
Device and method for directly measuring calorific energy contained in a fuel gas
The invention concerns a device ( 10 ) for measuring calorific energy contained in a fuel gas transported in a pipe ( 16 ) comprising a gas meter ( 12 ) measuring a volume V in pressure conditions...
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6532794 |
Self-contained sterilant monitoring assembly and method of using same
A system for monitoring concentrations of sterilant, such as hydrogen peroxide vapor, within a sterilization apparatus, includes a self-contained, sterilant monitoring assembly that is freely...
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6535658 |
Hydrogen sensor apparatus and method of fabrication
A porous glass rod is treated to include tungsten oxide and palladium in an arrangement that is sensitive to hydrogen to produce a color change that is a function of the hydrogen concentration. The...
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6530259 |
Fugitive emissions detection system and components thereof
The present invention relates to detection and alarm systems for predicting and detecting the location of spills, leaks, emissions, and/or pollution sources, i.e., unwanted fluid (liquid/gas)...
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6516653 |
Gas sensor arrangement
This invention relates to a gas sensor arrangement in which one or more gas sensors ( 4 ) are placed into rooms for monitoring or measuring gas or vapor concentrations or mixtures, a diffusion body...
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6510728 |
Gas sensor including inorganic powder filling gap between measuring element and metallic shell
A gas sensor including a metallic shell ( 1 ) and an element ( 2 ), which is disposed in a hollow portion formed in the metallic shell ( 1 ). An inorganic powder ( 4 ) is filled into a gap between...
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6499335 |
Gas sensor
A central electrode 12 is arranged in a coiled heater electrode 10. They are buried in a SnO 2 -based inner area 6, and the entirety is covered by a filter 8. The volume of the inner area ...
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6497135 |
Controller for use with wide range oxygen sensor
A voltage sensing system that has a pair of input leads having a first input lead, and a second input lead each sensing a non-grounded voltage, and an amplifier coupled to the pair of input leads,...
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6494080 |
Gas analyzer and a method for operating the same
A gas analyzer having an analysis or sensor unit and having an electronic processing unit, and a method for operating such a gas analyzer. In order to achieve substantially improved safety both in...
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6490908 |
Method and device for determining the gas properties of a combustible gas
The invention relates to a method and a device to determine the gas properties of combustible gas, in particular of natural gas, wherein a) at least part of the combustible gas is exposed to...
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6484563 |
Method at detection of presence of hydrogen gas and measurement of content of hydrogen gas
The present invention relates to a method at detection of presence of hydrogen gas and measurement of content of hydrogen gas. The detection is performed by means of a hydrogen gas sensitive...
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6485688 |
On-line sparging sampling and monitoring systems and methods
An on-line sparging sampling system and method sparges polar and non-polar volatile organic compounds from aqueous discharge. The system comprises a network of tubular members that are...
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6453723 |
Gas sensor device
A gas sensor device including a housing provided with an inlet for introducing a gas to be measured, a sensor element capable of detecting oxygen gas or the like contained in the gas and a base...
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6455000 |
Method and apparatus for measuring the concentration of a gas
A method and apparatus using thermomechanical means for signalling the concentration of a reactive gas is disclosed. The thermomechanical means uses movement of a mechanical member to produce a...
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6450007 |
Robust single-chip hydrogen sensor
A robust single-chip hydrogen sensor and a method for fabricating such a sensor. By adding an adhesion-promoting layer between the body of a sensor and an on-chip hydrogen-exposed...
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6450008 |
Food applications of artificial olfactometry
The present invention relates generally to methods and devices for evaluating agriculture products, and more particularly, to assessing and monitoring the quality of food products using electronic...
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6446487 |
Method for measuring the quantity of heat present in fuel gas
Method for measuring and/or regulating a quantity of heat contained in a fuel gas, the calorific value of the fuel gas being used as an input parameter, in which method a) the fuel gas or a...
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6441743 |
Method and apparatus for determining hazard levels of chemical/biological/nuclear agents in an environment
A system and method for determining hazard levels of chemical, biological, and nuclear agent in an environment processes chemical vapor concentration measurements and generates hazard levels of the...
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6435002 |
Assessment of the condition of fruit and vegetables
An assembly for measuring the condition of fruit and vegetable is disclosed which comprises an expandable resilient bellows arrangement ( 10 ) having a passive sensor ( 22 ) mounted therein. In...
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6435004 |
Apparatus and process for aerosol size measurement at varying gas flow rates
A measuring system and process for measuring the size distribution of particles in an aerosol with a time-varying flow utilizing a measuring instrument that utilizes a time-invariant flow rate is...
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6435003 |
Method of identifying a gas and associated apparatus
A method for identifying an unknown gas using a diffusion limited sensor providing an electrical signal output when exposed to the gas. According to the method, a sensor is disposed in a chamber of...
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6432362 |
Chemical sensor and coating for same
An acoustic wave based-chemical sensor utilizing a crystal substrate and a coating of at least two blended materials is disclosed. The blended materials comprise a combination of (a) a high glass...
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6433696 |
Carbon monoxide emitting apparatus, carbon monoxide monitor shutoff, and circuit therefor
A system for monitoring carbon monoxide in an environment which includes an apparatus emitting carbon monoxide, such as an internal combustion engine. A carbon monoxide sensor measures a...
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6425281 |
Pressure insensitive gas control system
A pressure insensitive gas process device that includes a gas sensor and restrictions upstream and downstream of the gas sensor. The restrictions result in pressure drops upstream and downstream of...
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6422059 |
Apparatus for detecting changes in concentrations of components of fluid mixtures
An apparatus is provided for the detection of changes in concentrations or amounts of components of a fluid mixture by measuring changes in an electrical or a mechanical property of a sensing...
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6418779 |
Structure of oxygen sensor
An oxygen sensor used with an electronic control unit in a car and having a metal housing formed by a front cap, a rear cap and an intermediate barrel and secured by a lock nut. A probe is mounted...
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6418777 |
Gas sensor
A gas sensor 1 includes an outer cylinder 18, a metallic shell 3, and a sensor element 2. The metallic shell 3 is disposed inside the outer cylinder 18. The sensor element 2 is...
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6418783 |
Handheld sensing apparatus
A vapor sensing device that is sufficiently small and lightweight to be handheld, and also modular so as to allow the device to be conveniently adapted for use in sensing the presence and...
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6415646 |
Method for measuring gas concentrations
The invention is directed to a method for measuring gas concentrations with a measuring head which is provided with a satellite-supported global positioning device. With the method, gas...
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6412333 |
Exhaust gas analyzing system
The present invention provides an exhaust gas analyzing system utilizing a mini-diluter method in which measurement accuracy of the exhaust gas analyzing system can be evaluated by the system...
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6397659 |
Method for detecting an element resistance of a gas concentration sensor and gas concentration detection apparatus
A/F ratio sensor includes an element portion using a solid electrolytic layer, and generates a sensor current in proportion to an oxygen concentration in an exhaust gas when a voltage is applied...
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6393894 |
Gas sensor with phased heaters for increased sensitivity
A concentrator and sensor assembly are disclosed that use phased heaters to multiply the concentration levels that can be eluted, relative to operation with a single interactive element having a...
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6395560 |
Headspace sampling apparatus and method
A headspace sampling apparatus collects headspace vapor from a container holding a vapor phase and a non-vapor phase of a substance which is to be analyzed. The apparatus includes a dual needle...
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6370941 |
Gas sensor and gas sensor system
The conduit tube 3 and the conduit tube 4 to flow the carrier solution to the gas exchanger 7 are provided, and in the conduit tube 3 , the reference pH electrode 14 is provided, and in...
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6360581 |
Gas sensor and method for manufacturing the same
A gas sensor 1 includes a casing 10 which covers a sensing element 2 and includes two cylindrical members. The cylindrical members are axially disposed in such a manner as to overlap each...
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6360582 |
Method for calibration of chemical sensor in measuring changes in chemical concentration
Changes in the concentration of a chemical, such as a gas, are determined using a non-linear chemical sensor which is subject to shifts in calibration over time. In order to minimize errors caused...
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6343499 |
Air-fuel ratio detecting apparatus and method
Under normal conditions, the temperature of an oxygen ion-conductive element provided in a sensor body is about 700° C., and the element impedance is about 30 Ω. If there is a fault in the sensor...
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6338824 |
Method for detection of extremely low concentration
An ultratrace detector system for hand-held gas chromatography having high sensitivity, for example, to emissions generated during production of weapons, biological compounds, drugs, etc. The...
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6338369 |
Hydrocarbon vapor sensing
A fuel dispenser system having a storage tank and a fuel delivery hose extending from the storage tank and terminating at a nozzle. A vapor recovery line extends between the nozzle and the storage...
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6332349 |
Installation for analyzing an atmosphere
Installation for analyzing the level of at least one element, from at least two initial gas sources (S 1 , S 2 , . . . ) in a sampling procedure, using at least one analyzer (A 1 , A 2 , . . . )...
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6329652 |
Method for comparison of similar samples in liquid chromatography/mass spectrometry
A method is disclosed to reduce the time needed to analyze data generated from very similar samples, emphasizing the differences obtained, from the combined technique of liquid chromatography/mass...
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6324892 |
Multi-gas analysis system for analyzing high-purity gases
There are provided an apparatus for analyzing gases and a gas analyzing method which can securely detect presence and absence of leakage in a short time and which can carry out analyses...
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6325979 |
Device for gas-sensoring electrodes
A sensing element, in particular for an electrochemical sensor for determining gas concentrations, having at least one three-dimensional electrode arrangement, applied on a support plate and...
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6321587 |
Solid state fluorine sensor system and method
A gaseous fluorine detection system is provided which includes a generally enclosed sample cell containing a substrate comprising a material which interacts with fluorine gas to generate radiant...
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6318149 |
Method and device for determining the joule-thomson coefficient of a fluid
The invention is a method for determining the Joule-Thomson coefficient of a fluid, expressing the temperature variation in relation to a pressure variation thereof. The fluid is injected at a...
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6314789 |
Sensor unit for air quality measurement
A sensor unit is described, in particular an air quality sensor, having a first support element, on which are arranged a first sensor element and a first heat source, assigned to the latter, and...
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6311543 |
Connection device for ceramic gas sensor element
A connection device for a ceramic gas sensor element includes a sensor assembly and a ring member. The sensor assembly has a ceramic element with a thickness t, an electrical connection portion...
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6305212 |
Method and apparatus for real time gas analysis
A method and apparatus for real time gas analysis involving determining individual concentrations of fluid constituents in a mixture of known constituents by measuring properties of the mixture and...
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6305214 |
Gas sensor and methods of forming a gas sensor assembly
A gas sensor assembly is provided with a non-conductive housing portion and a plurality of conductive housing portions, each of which are conductively separated from each other, and the conductive...
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