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8182664 |
Sensor control device
A sensor control device for controlling a current application state of a gas sensor element when measuring a specific gas component concentration in a gas to be measured using the gas sensor...
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8163161 |
Gas sensor and method for detecting particles in a gas flow
A gas sensor for detecting particles in a gas stream has a first electrochemical pump cell, which has a measuring chamber in which a first electrode is disposed to pump particles between the first...
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8152979 |
Ammonia gas sensor
An ammonia gas sensor including a reference electrode (320) is formed on the back surface of a solid electrolyte member (310), and a detection electrode (335) is formed on the front surface of the...
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8152991 |
Ammonia nanosensors, and environmental control system
Embodiments of nanoelectronic sensors are described, including sensors for detecting analytes such ammonia. An environmental control system employing nanoelectronic sensors is described. A...
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8097137 |
Gas sensor element and gas sensor
To provide a gas sensor element having a base body whose durability is unlikely to deteriorate during the use and exhibiting excellent endurance and responsiveness. [Means for Solution] A gas...
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8066859 |
Electrochemical carbon monoxide sensor supervision
A sensor supervision system for periodically providing a test to accesses the status of a gas detection sensor, such as a carbon monoxide (CO) sensor, is provided. To access the status of the CO...
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8012325 |
Plural-cell gas sensor with heater
A plural-cell gas sensor including at least an oxygen pump cell (40) comprising a solid electrolyte ceramic layer; an internal space (210) formed between the cells; and a heater substrate (190)...
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8012323 |
Compact electrochemical bifunctional NOx/O2 sensors with internal reference for high temperature applications
A bifunctional total NOx and O2 sensor assembly with an internal reference for high temperature sensing. Two electrochemical total NOx(NO+NO2) measuring systems and method were coupled with a...
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7967964 |
Single cell sensor for measuring the partial pressure of oxygen
A single cell oxygen sensor apparatus and method are disclosed. An yttrium-based stabilized layer having electrical terminals connected to the yttrium-based stabilized layer can be provided on a...
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7955494 |
Gas sensor control apparatus
The gas sensor control apparatus is for controlling a gas sensor including a sensor element having a solid electrolyte layer, and first and second electrodes located on opposite sides of the solid...
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7918989 |
Gas sensor and method thereof
A gas sensor and method thereof are provided. The example gas sensor may include first and second electrodes formed on a substrate, a carbon nanotube connecting the first and second electrodes on...
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7909970 |
Controller for gas concentration sensor
An oxygen sensor is employed for determining whether the exhaust air-fuel ratio is rich or lean. A voltage is applied to the oxygen sensor at device impedance calculation intervals to calculate...
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7901562 |
Oxygen sensor deterioration detection method
A deterioration detection apparatus for an oxygen sensor is able to detect an abnormality of the oxygen sensor constantly with high precision, without being affected by the temperature...
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7887685 |
Multilayer gas sensor having dual heating zones
A gas sensor for detecting NOX is provided. The gas sensor may have a plurality of substrate members, a first sensing electrode, and a second sensing electrode. The gas sensor may also have a first...
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7867370 |
Gas sensor element
A gas sensor element has a solid electrolyte body of oxygen ionic conductivity, a target gas electrode and a reference gas electrode formed on both surfaces of the solid electrolyte body,...
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7744740 |
Procedure to recognize the diffusion gas composition in a wideband lambda sensor
In a procedure to recognize the gas composition of a gas mixture, which consists of at least two gases of preferably different diffusion properties, delivered to a wideband lambda sensor,...
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7704374 |
Electrochemical gas sensor
An electrochemical gas sensor is provided with a carbon-based measuring electrode (3) that it can be used for a large number of electrochemical detection reactions and can be manufactured at a low...
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7632393 |
Total organic carbon (TOC) analyzer
The invention disclosed is a total organic carbon (TOC) analyzer comprised of an electrochemical cell comprising a diamond-film electrode (2) doped with boron or other conductivity including...
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7628907 |
Gas sensor
A gas sensor is provided for detecting one or more gases in a gas sample. The gas sensor includes a substrate, a solid electrolyte layer including lanthanum oxide for sensing carbon dioxide, a...
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7611612 |
Multilayer ceramic NOx gas sensor device
A mixed potential NOx sensor apparatus for measuring the total NOx concentration in a gas stream is disclosed. The NOx sensing apparatus comprises a multilayer ceramic structure with electrodes for...
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7524407 |
Gas sensor
An oxygen sensor 10 includes an oxygen detection element 20, which assumes a hollow tubular shape extending along the axis. The oxygen detection element 20 has a closed tip end and an opened rear...
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7481915 |
Exhaust gas temperature measurement utilizing an exhaust gas sensor
A system for determining a temperature of exhaust gases from an engine is provided. The system includes an exhaust gas sensor having an electric heating coil. The sensor communicates with exhaust...
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7316767 |
Gas sensing element
Provided is a multilayer gas sensing element having a high measurement accuracy and less susceptible to a leakage current. The element comprises an oxygen pump cell for adjusting an oxygen...
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7294252 |
NOx sensor and methods of using the same
Disclosed herein are NOx sensors and methods of using the same. In one embodiment, a method for sensing NOx comprises: contacting a first NOx electrode with the gas, contacting a second NOx...
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7285204 |
Apparatus for detecting deterioration of air-fuel ratio sensor
In detecting a deterioration of an air-fuel ratio sensor, a sensor output change speed integrated value is calculated when an element temperature of a solid electrolyte is stabilized at a low...
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7025870 |
Method for analyzing the oxygen concentration of a gas
A method for analyzing the oxygen concentration of a gas with an oxygen concentration analyzer of such a type that a probe sensor, when supplied with a gas to be analyzed, produces an electrical...
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6916415 |
Heater drive circuit and drive method for a gas sensor
A method and device for driving a gas sensor includes a three-point circuit determining a temperature of a gas sensor having a resistive heating element by determining a measuring current with a...
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6849174 |
Gas concentration measuring apparatus designed to minimize error component contained in output
A gas concentration measuring apparatus which has a gas sensor designed to measure, for example, the concentrations of O2 and HOx contained in exhaust emissions of an automotive engine is provided....
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6841053 |
Electronic tongue as ozone detector
An electronic tongue for the detection of ozone is based on voltammetry, and comprises at least one working electrode and a counter electrode, wherein the working electrode(s) is(are) made of one...
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6797151 |
CO sensor and method of measuring CO concentration
A CO sensor and a CO-concentration measurement method which enables accurate measurement of CO concentration irrespective of the hydrogen concentration of a gas under measurement. By applying a...
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6660143 |
Oxygen sensor
A sensor structure having a metallic terminal member. The metallic terminal member 23 includes press portions 23d and 23e, which press the heating member 3 in a direction intersecting the center...
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6649041 |
Deterioration detector for exhaust gas sensor and method of detecting deterioration
The invention provides a deterioration detector for an exhaust gas sensor capable of detecting an amount of change with age of an internal resistance and conducting deterioration judgment taking...
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6623619 |
Electrochemical sensor for determining analyte in the presence of interferent and method of using the sensor
Electrochemical sensor for determining analyte in the presence of interferent, particularly carbon monoxide in the presence of hydrogen. An electrochemical cell is designed so that current flow...
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6592731 |
Amperometric oxygen sensor
A low cost amperometric oxygen sensor which utilizes a plurality of oxygen ion conductor layers interposed between a plurality of oxygen-porous electrode layers is provided. Oxygen from a sample...
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6524467 |
Method for adjusting output characteristics of a gas sensing element based on application of electric power to this sensing element
Each gas sensing element, with a measured gas sensing electrode and a reference gas sensing electrode provided on opposite surfaces of a solid electrolytic body, is manufactured to have a limit...
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6451187 |
Air/fuel ratio sensor
A detector for an air/fuel ratio sensor, which is comprised of a structure formed by stacking an oxygen reference electrode, a dense zirconia solid electrolyte, a negative electrode, a porous...
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6365021 |
Oxygen sensor
A detecting element is configured such that a second electrode is disposed on one side of a plate-like first electrode with a first solid electrolyte layer positioned therebetween and a third...
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6342151 |
Method of using a gas sensor
A method of measuring oxygen and/or the air-to-fuel lambda ratio and hydrocarbons and/or carbon monoxide in gas mixtures using a gas sensor is provided. To reliably measure a plurality of gaseous...
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6294075 |
Method of controlling and diagnosing the heater of an engine exhaust gas composition sensor
A method of controlling and diagnosing the heater of a sensor sensitive to the composition of the exhaust gas of an engine; the sensor having at least an electrolytic cell sensitive to oxygen ions,...
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6277267 |
Gas sensor
A method for measurement of nitrogen oxides using a gas sensor. To reliably measure nitrogen oxides, the sensor has a reference electrode representing a constant oxygen partial pressure, at least...
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6270651 |
Gas component sensor
The present invention is an electrolyte composition in bulk, thick film and sputtered thin film form forming with different metal sensing and reference electrodes a highly stable gas component...
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6267857 |
Oxygen sensor with a heater
The invention reduces the activation time of an oxygen sensor with a heater through rapid heating of an oxygen sensing element. A shaft-like heating member is inserted and fixed into an oxygen...
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6254765 |
Method of regulating the temperature of a sensor
A method for regulating the temperature of a sensor for determining an oxygen concentration in gas mixtures, in particular in exhaust gases of internal combustion engines, where a detection voltage...
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6214207 |
Method and apparatus for measuring oxygen concentration and nitrogen oxide concentration
Using a sole Nox sensor Nox concentration and oxygen concentration are measured accurately. A measurement device for measuring NOx concentration and oxygen concentration comprises an NOx sensor 2...
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6120677 |
Temperature control for all range oxygen sensor
A constant current Iconst is applied to an electromotive force cell which is interposed between a gap (measurement chamber) of a fixed atmosphere and an oxygen reference chamber of a constant...
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6036841 |
Method for measuring nitrogen oxide
A method for measuring nitrogen oxide (NOx) in a gas by decomposing NOx in the gas and measuring an amount of oxygen generated by the decomposition includes: introducing the gas to a first inner...
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5976335 |
Gas sensor having a function for minimizing heater leak current
Disclosed is a gas sensor comprising a main pumping cell including a solid electrolyte layer contacting with an external space, and an inner pumping electrode and an outer pumping electrode formed...
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5932079 |
Electrochemical multigas sensor
An electrochemical measuring cell for the simultaneous detection of different gas components in a gas sample, with a plurality of measuring electrodes (4, 5, 6) behind a diffusion barrier (7), with...
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5919346 |
Oxygen concentration-detecting device for internal combustion engines
An oxygen concentration-detecting device for an internal combustion engine includes an oxygen concentration sensor arranged in the exhaust system of the engine, for detecting concentration of...
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5910450 |
Process and device for enriching gas, vapor and/or aerosol emissions released from an object
A process for enriching substance emissions released from an object in the form of gases, vapors or aerosols, wherein the substance emissions are fed to an adsorption layer by diffusion or...
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