Entries |
Document | Title | Date |
20080202930 | ELECTROCHEMICAL GAS SENSOR CONTAINING ELECTRIC CONNECTION LINES OR HOUSING CONTACT BRIDGES COMPRISING CARBON NANOTUBES - An electrochemical gas sensor ( | 08-28-2008 |
20080217173 | Gas Sensor - A sensor for detecting a target substance, in particular carbon dioxide, in a gas stream comprises a sensing element ( | 09-11-2008 |
20080277282 | GAS SENSOR AND MANUFACTURING METHOD THEREOF - There is provided a gas sensor, which includes a sensor element extending axially of the gas sensor and having a gas sensing portion at a front end thereof and an electrode portion at a rear end thereof, a cylindrical metal shell retaining therein the sensor element with the gas sensing portion and the electrode portion protruding from front and rear ends of the metal shell, respectively, and having a flange portion and a rear end portion located on a rear side of the flange portion, a cylindrical protection cover having a front end fitted onto the rear end portion of the metal shell so as to cover the electrode portion and a weld joint through which the entire circumference of the front end of the protection cover is joined through the metal shell. The weld joint extends from an end face of the protection cover to the metal shell. | 11-13-2008 |
20080289961 | Sensor Element - A sensor element for determining the oxygen concentration in an exhaust gas has a conductor track applied to a solid electrolyte, which includes an electrode provided in a measuring area of the sensor element and an electrode lead connected to the electrode and situated in the lead area of the sensor element. In a transition area between the measuring area and the lead area, the conductor track has a narrowing. Furthermore, the electrode includes a first electrode section and a second electrode section, the first electrode section being connected to the electrode lead in a transition area between the measuring area and the lead area, and the first and second electrode sections being electrically connected to one another only on their sides facing away from the lead area. | 11-27-2008 |
20080289962 | ELECTROCHEMICAL SENSOR WITH DRY IONOMER MEMBRANE - A miniaturized gas sensor comprised of film type electrodes, on a non-conductive supportive substrate, and in contact with a dry ionomer electrolyte, for detection of toxic gases, i.e., carbon monoxide, and other oxidizable or reducible gases and vapors and method of making same is described. The all-solid planar sensor cell has two or more film type electrodes arranged on a non-conductive planar surface of a supportive substrate. Manufacturing the electrochemical sensor with dry ionomer prevents electrode flooding and allows for improved response time upon assembly. The sensor cell contains no liquid electrolyte and is operated in a constant-voltage, potentiostatic or potentiodynamic mode. A high sensitivity to a select gas or vapor is achieved by a three-phase contact area design for a sensing electrode, which provides contact with the solid ionomer electrolyte, as well as the gas sample via diffusion openings or holes that penetrate through the supportive substrate. | 11-27-2008 |
20080302661 | GAS SENSOR - A gas sensor contains a sensor element for detecting the concentration of a particular gas component in a measurement gas and a housing for supporting the sensor element inside, and the sensor element has a rectangular solid structure of a solid electrolyte body containing a ceramic material. In the gas sensor, four edges of the solid electrolyte body are beveled over the entire length thereof to form eleventh to fourteenth chamfered portions corresponding to the four edges. | 12-11-2008 |
20080308420 | Proton Conductive Material, Process for Producing the Same, Hydrogen Concentration Cell, Hydrogen Sensor and Fuel Cell - This provides a proton conductive material capable of operating from a low temperature range to a middle temperature range and being produced easily at low cost and a process for producing the same. This also provides a hydrogen concentration cell, a hydrogen sensor and a fuel cell equipped with the proton conductive material. The proton conductive material contains the element of calcium, the element of sulfur and the element of hydrogen, respectively, and having a proton conductivity of not less than 10 | 12-18-2008 |
20090014330 | AMMONIA GAS SENSOR - An ammonia gas sensor including a reference electrode ( | 01-15-2009 |
20090038941 | Device for Determining the Concentration of a Component in a Gas Mixture - In an apparatus that ascertains a concentration of a component in a gas mixture, the apparatus includes:
| 02-12-2009 |
20090050479 | EXHAUST GAS SENSOR - An exhaust gas sensor including a sensor element and a heating element. The sensor element includes a cup-shaped member having a length, an outer surface, and an inner surface defining a cavity. The sensor element further includes an exhaust electrode coupled to the outer surface and a reference electrode coupled to the inner surface. The heating element is located within the cavity and contacts the sensor element within the cavity of the cup-shaped member over a contact length. A ratio is defined as the contact length divided by the length of cup-shaped member and the ratio is at least about 0.05. | 02-26-2009 |
20090050480 | EXHAUST GAS SENSOR - An exhaust gas sensor that includes a sensor element having a cup-shaped member including an outer surface and an inner surface defining a cavity. The cup-shaped member further includes an exhaust electrode coupled to the outer surface and a reference electrode coupled to the inner surface. The exhaust gas sensor further includes a heating element located within the cavity and a heat conductive material within the cavity and between the inner surface of the cup-shaped member and the heating element to facilitate heat transfer from the heating element to the sensor element. | 02-26-2009 |
20090065358 | OXYGEN SENSOR, AND INTERNAL COMBUSTION ENGINE AND TRANSPORT APPARATUS PROVIDED WITH THE OXYGEN SENSOR - An oxygen sensor which is highly waterproof in a high-temperature environment and yet allows for downsizing includes a sensor element having a detection section arranged to detect oxygen, a housing, the sensor element being inserted at one end thereof in such a manner that the detection section is exposed, a cylindrical member provided at another end of the housing, a sealing member arranged to seal the cylindrical member, and a terminal portion connected to the sensor element. The sealing member has a throughhole, and is made of a heat-resistant resin. The terminal portion is press-fitted in the throughhole of the sealing member. | 03-12-2009 |
20090078573 | SOLID-ELECTROLYTE GAS SENSOR ELEMENT, INCLUDING A PUMP CELL AND A REFERENCE GAS CHANNEL - A sensor element for determining gas components in measuring gas mixtures, particularly gas components in exhaust gases of combustion devices, having a measuring chamber that is in gas-conducting connection with the measuring gas mixture, and having a solid electrolyte which connects a pump electrode, situated in the measuring chamber, and a pump counterelectrode while conducting oxygen ions, in order to set the oxygen content in the measuring chamber. This sensor element stands out by having the pump counterelectrode situated in a reference gas chamber. | 03-26-2009 |
20090095626 | Carbon dioxide sensor - The present invention generally relates to carbon dioxide (CO | 04-16-2009 |
20090101501 | ROOM TEMPERATURE GAS SENSORS - A gas sensor may include a mat including nanofibers attached to a substrate layer, a first electrode in electrical communication with one end of the mat, and a second electrode in electrical communication with the other end of the mat. The sensitivity of the gas sensor for carbon monoxide at a concentration of 50 ppm in air, and at a temperature from about 20° C. to 26° C., is at least 1.29. | 04-23-2009 |
20090101502 | Thermal Shock Resistant Gas Sensor Element - A thermal shock resistant sensor element that includes a sensor element having a gamma alumina coating on at least a portion thereof. The thermal shock resistant sensor element may be thermal shock resistant at temperatures greater than about 600° C. A method of making a thermal shock resistant element that includes plasma spraying gamma alumina onto a sensor element to form a thermal shock resistant element. The thermal shock resistant sensor element may be thermal shock resistant at temperatures greater than about 500° C. A thermal shock resistant sensor element that includes a sensor element having an alumina coating on at least a portion thereof. The thermal shock resistant sensor element may be thermal shock resistant at temperatures greater than about 500° C. and may demonstrate a Si poisoning resistance after exposure to the Gas Burner Test (850° C.) for at least about 60 hours. | 04-23-2009 |
20090101503 | GAS SENSOR AND METHOD OF MANUFACTURING THEREOF - In a gas sensor sensing a specific gas component contained in gas to be measured, oxygen ion conductive solid electrolyte is used in a sensing element for sensing the specific gas component. A terminal unit is used, which comprises a pair of insulators, each having an inner side surface, disposed to pinch and hold the base end portion of the sensing element on the pair of electrode-mounted surfaces of the sensing element. The terminal unit comprises two pairs of metal terminals and a spring member. The metal terminals electrically contact electrode pads of the sensing element, pair by pair, respectively, and are disposed on the inner side surfaces of the insulators. The spring members press the pair of insulators at one or more positions of electrode-mounted surfaces of the sensing element in a width direction so that the insulators are pressed to be opposed to each other. | 04-23-2009 |
20090101504 | GAS SENSOR - The gas sensor includes a sensor element, a heater for heating the sensor element, the heater having a roughly cylindrical shape, a housing into which the sensor element is inserted to be held therein, and a terminal unit disposed so as to cover a rear end portion of the heater on a rear end side of the housing. The terminal unit includes a pair of insulators, a pair of metal terminals each of which is located Inside a corresponding one of the pair of the insulators and in contact with a corresponding one of a pair of electrode pads provided on a surface of the rear end portion of the heater, and a pressing member pressing the pair of the insulators in a direction that the pair of the insulators approach each other. The pair of the insulators are located out of contact with each other. The rear end portion of the heater is contact-supported at at least three contact points by the terminal unit. | 04-23-2009 |
20090114539 | MIXTURE POTENTIAL SENSOR FOR MEASURING A GAS CONCENTRATION AND A METHOD FOR THE PRODUCTION THEREOF - A sensor for measuring a gas component concentration in a mixture comprises a ion conductor solid electrolyte and electrodes separated therefrom, wherein the external electrode is exposed to the mixture and the internal electrode is arranged in a hollow chamber separated from the mixture by a diffusion barrier and the invention is characterized in that the external electrode is provided with a solid body for forming the mixture potential. | 05-07-2009 |
20090120793 | METHOD OF PROTONATING HYDROGEN MOLECULE, CATALYST FOR PROTONATING HYDROGEN MOLECULE, AND HYDROGEN GAS SENSOR - A method of protonating a hydrogen molecule includes bringing hydrogen gas into contact with a surface of a solid having a relative dielectric constant of more than 78. | 05-14-2009 |
20090134026 | Gas sensor and method for the production thereof - A gas sensor has a condenser with a layered structure, including at least two electroconductive layers forming electrodes, at least one of the layers being at least partially permeable to the gas to be detected. A gas-sensitive layer produced by means of a sol-gel technique is arranged between the electrodes, the composition and structure of the layer being adapted to the gas to be detected and the desired measuring region. Further, a method is disclosed for producing such a gas sensor. | 05-28-2009 |
20090159445 | GAS SENSOR AND METHOD OF MAKING - A gas sensor is disclosed. The gas sensor includes a gas sensing layer, at least one electrode, an adhesion layer, and a response modification layer adjacent to said gas sensing layer and said layer of adhesion. A system having an exhaust system and a gas sensor is also disclosed. A method of fabricating the gas sensor is also disclosed. | 06-25-2009 |
20090159446 | GAS SENSOR AND METHOD OF MAKING - A gas sensor is disclosed. The gas sensor includes a gas sensing layer including doped oxygen deficient tungsten oxide and a dopant selected from the group consisting of Re, Ni, Cr, V, W, and a combination thereof, at least one electrode positioned within a layer of titanium, and a response modification layer. The at least one electrode is in communication with the gas sensing layer and the gas sensing layer is capable of detecting at least one gas selected from the group consisting of NO, NO | 06-25-2009 |
20090173630 | GAS SENSOR ELEMENT AND GAS SENSOR - A gas sensor element for detecting a specific gas component contained in a gas to be measured includes: a solid electrolyte layer; a first electrode disposed on the solid electrolyte layer; a second electrode disposed on the solid electrolyte layer; and a porous layer disposed on one of the first electrode and the second electrode such that the gas to be measured is introduced from the outside of said gas sensor element and passes through the porous layer to at least one of the first electrode and the second electrode. The porous layer includes: a first porous layer including a first ceramic porous body which does not include noble metal particles dispersed therein; and a second porous layer provided on the first porous layer and including a second ceramic porous body and noble metal particles dispersed therein. | 07-09-2009 |
20090183988 | GAS SENSING ELEMENT AND GAS SENSOR USING SUCH GAS SENSING ELEMENT - A gas sensing element and a gas sensor using such a gas sensing element are disclosed. The gas sensing element includes a ceramic substrate having a surface on which electrode pads are provided to be brought into contact with abutment portions formed on contact terminals connected to external leads. The electrode pads are made of mixed material containing noble metal and ceramics. The electrode pads have surface regions, available to be held in contact with the contact terminals, each of which has a noble metal content greater than that of each of bonding regions of the electrode pads tightly bonded to the ceramic substrate. | 07-23-2009 |
20090211906 | AMMONIUM GAS SENSOR - An ammonium gas sensor is provided. The ammonium gas sensor includes: a solid electrolyte layer having oxygen ion conductivity; a detection electrode formed on one surface of the solid electrolyte layer; a reference electrode that is a counter electrode of the detection electrode; a selective reaction layer covering the detection electrode; and a protection layer covering the selective reaction layer and made from a porous material; wherein the detection electrode includes a noble metal as a main component; the selective reaction layer includes oxide represented by A | 08-27-2009 |
20090218220 | Amperometric Electrochemical Cells and Sensors - Amperometric ceramic electrochemical cells comprise, in one embodiment, an electrolyte layer, a sensing electrode layer, and a counter electrode layer, wherein the cell is operable in an oxidizing atmosphere and under an applied bias to exhibit enhanced reduction of oxygen molecules at the sensing electrode in the presence of one or more target gases such as nitrogen oxides (NO | 09-03-2009 |
20090229978 | GAS SENSING ELEMENT WITH INCREASED RESPONSE - A gas sensing element is disclosed as having a measuring gas chamber to which measuring gases are admitted, a diffusion resistance portion for introducing measuring gases to the measuring gas chamber under diffusion resistance, a sensor cell for detecting a specified gas concentration of measuring gases, and an oxygen pump cell for adjusting an oxygen concentration in the measuring gases. The sensor cell includes a measuring electrode, placed facing the measuring gas chamber, and a reference electrode formed in pair with the measuring electrode. The oxygen pump cell includes an inner pump electrode placed facing the measuring gas chamber, and an outer pump electrode formed in pair with the inner pump electrode. The diffusion resistance portion is placed in an area inside of external end walls of the inner pump electrode to be exposed to the measuring gas chamber. | 09-17-2009 |
20090260987 | METHOD OF MAKING GAS SENSOR ELEMENT, AND GAS SENSOR DERIVED THEREFROM - Disclosed herein is a method of making a gas sensor element, comprising calcining a NOx sensor electrode material at a NOx sensor electrode material calcination temperature of about 1200 to about 1600° C. to form a calcined NOx sensor electrode material, disposing the calcined NOx sensor electrode material on a substrate to form a substrate comprising a NOx sensor electrode, and firing the substrate comprising the NOx sensor electrode at a gas sensor element firing temperature to form a gas sensor element comprising a NOx sensor electrode. Also disclosed is a gas sensor comprising the gas sensor element. | 10-22-2009 |
20090283403 | Sensor element having improved dynamic properties - A sensor element, e.g., for measuring an oxygen concentration in an exhaust gas, has at least two electrodes and at least one solid electrolyte connecting the electrodes. The solid electrolyte has at least one first metal oxide as the solid electrolyte matrix material, and at least one solid electrolyte dopant. At least one intermediate layer is situated between at least one of the electrodes and the solid electrolyte. The intermediate layer has at least one second metal oxide as the intermediate layer matrix material and at least one intermediate layer dopant. The concentration of the intermediate layer dopant in the intermediate layer matrix material is less than the concentration of the solid electrolyte dopant in the solid electrolyte matrix material. | 11-19-2009 |
20090301877 | Gas Sensor - A gas sensor for sensing the gas concentration in a measured gas mixture, particularly of a nitrogen compound, having a solid electrolyte which connects a first and a second electrode in an ion-conducting manner, the first electrode having a high activity with respect to oxidation or reduction of the gas component that is to be sensed, and the second electrode having a slight activity in this regard. The influence on the activity with regard to oxidation or reduction of the gas component to be determined, due to free oxygen present in the measured gas mixture, is approximately equally strongly pronounced at both electrodes. | 12-10-2009 |
20090308748 | SENSOR ELEMENT HAVING IMPROVED THERMALPROPERTIES FOR DETERMINING A GAS COMPONENT - A sensor element for determining a gas component in a measuring gas includes a first and a second electrode, a solid electrolyte situated between the electrodes, a heater having a heating element, and an insulation surrounding the heating element, wherein the heating element has a meander pattern having a first external heating area, a second external heating area, a first internal heating area, and a second internal heating area. | 12-17-2009 |
20100006433 | GAS SENSOR - A gas sensor includes a substantially cylindrical metal shell; a laminated sensor element held within the metal shell, and including a plate-shaped solid electrolyte layer extending in a longitudinal direction; an electrode portion provided on the solid electrolyte layer; an insulating layer; and a lead portion connected with the electrode portion, extending in the longitudinal direction, and having a front end portion laminated on the solid electrolyte layer, and a rear end portion laminated through the insulating layer on the solid electrolyte layer. The insulating layer has an end portion over and across which the lead portion extends, and which has a recessed shape, a raised shape, or a recessed and raised shape in the longitudinal direction as viewed in the lamination direction. | 01-14-2010 |
20100051458 | CARBON QUANTITY DETECTING SENSOR WITH INCREASED DETECTING PRECISION - A carbon quantity detecting sensor for continuously detecting a carbon quantity of measuring gases with increased precision using a simplifier structure is disclosed. The sensor includes at least a proton conductive body composed of a solid electrolyte body having a proton conductivity, an electrode pair composed of a measuring electrode and a reference electrode formed on the proton conductive body at opposing surfaces thereof respectively, and a power source for applying at least one of a given current or a given voltage across the electrode pair. The measuring gases electrode is exposed to the measuring gases and the reference electrode is isolated from the measuring gases. This enables the carbon quantity of measuring gases to be detected with increased precision for a long period of time without causing a carbon component to accumulate on a surface of the measuring electrode due to an electrochemical reaction. | 03-04-2010 |
20100059374 | 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. | 03-11-2010 |
20100072065 | SUBSTANCE DETECTION SENSOR - A substance detection sensor comprises an insulation layer ( | 03-25-2010 |
20100084269 | Sensor Material and Gas Sensor Element and Gas Sensor Derived Therefrom | 04-08-2010 |
20100101950 | CERAMIC JUNCTION MEMBER, CERAMIC HEATER AND GAS SENSOR - A ceramic joining unit, ceramic heater and gas sensor, the ceramic joining unit including: a ceramic base member; an electrode pad provided on a surface of the ceramic base member; a coupling terminal; and a joining portion, wherein the electrode pad includes: a first layer in contact with the ceramic base member; and a second layer laminated on a surface of the first layer and in contact with the joining portion, wherein each of the first and second layers contains a ceramic material as a main component, a content of the ceramic material in the first layer is greater than that of the second layer, and a contour of the first layer is located outside of a contour of the second layer at an entire periphery of the first layer. | 04-29-2010 |
20100155240 | GAS SENSOR ELEMENT AND GAS SENSOR EQUIPPED WITH THE SAME - A gas sensor element is composed of a sensor section, a heater section, and a porous protective layer. The sensor section is composed of a solid electrolyte layer and a pair of electrodes. The heater section heats the sensor section to activate it. The porous protective layer covers surfaces of the sensor section and the heater section of the gas sensor element in a gas sensor which is exposed to a target detection gas to be detected. The porous protective layer is made of a mixture of hydrophobic heat resisting particles having a contact angle of not less than 75° to a drop of water, and the hydrophilic heat resisting particles having a contact angle not more than 30° to a drop of water. A gas sensor equipped with the above gas sensor element is also disclosed. | 06-24-2010 |
20100236925 | CERAMIC STRUCTURE AND GAS SENSOR INCLUDING THE CERAMIC STRUCTURE - A gas sensor includes a ceramic structural member. The ceramic structural member includes a base body formed of an insulating material; and a porous ceramic layer formed integrally with the base body. The ceramic layer is formed of an admixture obtained by mixing a plurality of ceramic materials with each other. The plurality of ceramic materials have grain size distributions different from each other. | 09-23-2010 |
20100243445 | METHOD OF MANUFACTURING GAS SENSOR, GAS SENSOR, AND LAMINATED STRUCTURE THEREOF - A method of manufacturing a gas sensor includes a step of printing a measuring electrode pattern on a ceramic green sheet for forming a measuring electrode, and a step of printing an electrode protection layer pattern on the measuring electrode pattern. The step of forming the protection layer pattern is performed by repeatedly printing a unit layer pattern several times by using a protection layer forming paste with ceramic powder mixed with a pore-forming agent in a predetermined ratio. A ratio of the pore-forming agent in the protection layer forming paste used for forming at least either one of a bottom unit layer pattern and an uppermost unit layer pattern is made larger than that of the pore-forming agent in the protection layer forming paste used for forming a unit layer pattern of other layers. | 09-30-2010 |
20100264026 | CONTAMINATION-RESISTANT GAS SENSOR ELEMENT - A contamination-resistant sensor element and methods for making the same are provided. A sensor element may include a contamination-resistant coating on at least a portion thereof. The coating may comprise gamma-delta alumina and lithium oxide and may have a thickness of about 100 to about 600 microns and a porosity of about 20 to about 70 percent. The method may include using gamma-delta alumina and lithium oxide to form a mixture, applying the mixture to at least a portion of a sensor element, and temperature treated the mixture to form a contamination-resistant coating on the surface of the measuring cell. | 10-21-2010 |
20100270154 | GAS SENSOR ELEMENT, GAS SENSOR EQUIPPED WITH GAS SENSOR ELEMENT, AND METHOD OF PRODUCING GAS SENSOR ELEMENT - A gas sensor element has a solid electrolyte with an oxygen ion conductivity, a target gas electrode formed on one surface of the solid electrolyte, a reference gas electrode formed on the other surface of the solid electrolyte, a porous diffusion resistance layer through which the target gas passes to reach the target gas electrode, and a catalyst layer formed on an outer surface of the porous diffusion resistance layer. Through the catalyst layer, the target gas is introduced to the inside of the gas sensor element. The target gas electrode is formed around the porous diffusion resistance layer. The catalyst layer contains noble metal catalysts. The noble metal catalysts contain at least rhodium and palladium. The noble metal catalysts have an average particle size of not less than 0.3 μm. | 10-28-2010 |
20100288636 | Laminated gas sensor and method of producing the same - A laminated gas sensor for exhaust gases improving thermal shock resistance, durability and reliability without permitting characteristics of the exhaust gas sensor to be particularly lowered is provided. A laminated gas sensor comprising a solid electrolyte layer ( | 11-18-2010 |
20100314249 | GAS SENSOR APPARATUS FOR AUTOMOTIVE EXHAUST GAS APPLICATIONS - A gas sensor apparatus and method of forming the same generally includes a gas sensor element comprising a heater and a plurality of electrodes. A ceramic substrate can be provided for supporting the electrodes on one side of the ceramic substrate and the heater on the opposite side of the ceramic substrate. The gas sensor element is preferably embedded in the ceramic substrate. The ceramic substrate also possesses a substantially circular shape in order to prevent a breakage of the gas sensor element, avoid thermal loss, and permit the gas sensor apparatus to withstand mechanical shock and high vibrations while occupying a minimal package space. | 12-16-2010 |
20110017596 | GAS SENSOR AND PROCESS FOR PRODUCING THE SAME - A sealing portion is formed of a calcined body that is made by calcining a powder compact of a spherically-shaped granulated powder that is selected from the group consisting of alumina, aluminum titanate and cordierite. Anisotropy in physical properties is less likely to occur in the powder compact, because these ceramics are not only good in terms of thermal stability but also their spherically-shaped granulated powders are less likely to be oriented at the time of powder compacting. Therefore, the sealing portion comes to have a long longevity, because slippages between the particles are less likely to occur even when thermal histories are applied thereto, and because it can maintain the gas sealing property stably for a long period of time. | 01-27-2011 |
20110036715 | GAS SENSOR - A gas sensor having a sensor element that includes an inner space for introducing a measurement gas therein from an external space and a pump cell which has a first electrode formed on a surface of the inner space and a second electrode formed in a space different from the inner space and is provided to pump oxygen out of the inner space by applying a predetermined voltage between the first electrode and the second electrode. Assuming that the length of the inner space in a short-side direction of the sensor element as viewed from the front end portion side thereof is x | 02-17-2011 |
20110036716 | GAS SENSOR - A gas sensor, that represses a manufacturing cost, obtains high responsiveness and can effectively reduce adhesion of water to a sensor element and intrusion of water into the sensor element, is provided. In the gas sensor that has the sensor element mainly containing a solid electrolyte with oxygen ion conductivity and a protective cover arranged to surround the sensor element and detects a predetermined gas component in a measurement gas, the protective cover includes an inner protective cover that is formed into a bottomed cylindrical shape, has a plurality of inner gas distributing holes formed in two rows on its side surface in a longitudinal direction of the sensor element and surrounds one front end of the sensor element, and an outer protective cover that is formed into a bottomed cylindrical shape, has a plurality of outer gas distributing holes on its side surface and surrounds the inner protective cover. | 02-17-2011 |
20110048944 | Measuring Device for Determining NH3 - In a device ( | 03-03-2011 |
20110056832 | LAMINATED GAS SENSOR ELEMENT, GAS SENSOR EQUIPPED WITH LAMINATED GAS SENSOR ELEMENT, AND METHOD FOR MANUFACTURING LAMINATED GAS SENSOR ELEMENT - A laminated gas sensor element including a detection element including a solid electrolyte body having a pair of electrodes formed thereon laminated together with a heater element. A porous protection layer is formed on at least a distal end portion of the laminated gas sensor element which is to be exposed to a gas to be measured. The surface of the porous protection layer has 10 or more small pores each having a diameter of 1 μm to 5 μm inclusive and an aspect ratio of 0.5 to 2.0 inclusive within an area measuring 50 μm×50 μm, and one to less than 20 large pores each having a diameter of 8 μm to 20 μm inclusive and an aspect ratio of 0.5 to 2.0 inclusive within an area measuring 100 μm×100 μm. Also disclosed is a method for manufacturing the laminated gas sensor. | 03-10-2011 |
20110147214 | GAS SENSOR AND METHOD FOR MANUFACTURING SENSOR ELEMENT - A gas sensor capable of a high-accuracy measurement which is realized by a high responsiveness and a strength that prevents a sensor element from being damaged by a stress occurring in assemblage and usage. This gas sensor includes a sensor element formed of an oxygen-ion conductive solid electrolyte as a main component, and the sensor element includes: an internal space to which a measurement gas is introduced from the outside; a first electrode formed on a surface of the internal space; a second electrode formed in a space different from the internal space; and a pumping cell including the first and second electrodes. The pumping cell is operable to pump out oxygen existing in the internal space when a predetermined voltage is applied to between the first and second electrodes. The thickness of the internal space is 50 μm or more and 180 μm or less. | 06-23-2011 |
20110168556 | NITROGEN-OXIDE GAS SENSOR - The present invention provides a nitrogen-oxide gas sensor that is able to measure nitric oxide and nitrogen dioxide at the same time and ensure measurement accuracy and long stability. The present invention relates to the nitrogen-oxide gas sensor that includes: an oxide ion conductive solid electrolyte; a primary film made of a metal oxide which contacts the solid electrolyte; a secondary film made of a metal oxide that contacts with the solid electrolyte and is separated from the first film; a power source that applies electric power to the primary and secondary films by electrically connecting a primary node to the primary film and a secondary node to the secondary film; a tertiary film made of a metal oxide that contacts the solid electrolyte, wherein the tertiary film and the primary film are connected to the power source in parallel; and a measurement unit that measures the electric potential difference between the primary and secondary nodes. | 07-14-2011 |
20110168557 | NITROGEN-OXIDE GAS SENSOR - A nitrogen-oxide gas sensor that is able to measure a nitric oxide and a nitrogen dioxide at the same time, and ensure sensing accuracy and stability over a long period of time. | 07-14-2011 |
20110186431 | GAS SENSOR AND METHOD FOR MANUFACTURING SAME - A NOx sensor | 08-04-2011 |
20110214989 | SENSOR ELEMENT HAVING A CARRIER ELEMENT - A sensor element for determining at least one property of a gas in a measuring gas chamber, in particular for detecting a gas component in a gas mixture. The sensor element includes at least one cell having at least one first electrode, at least one second electrode and at least one solid electrolyte connecting the first electrode and the second electrode having a solid electrolyte material. The sensor element further includes at least one carrier element made of a carrier material, the carrier material having a lower ionic conductivity than the solid electrolyte material. The carrier element is configured and situated to confer mechanical stability on the cell. | 09-08-2011 |
20110220496 | GAS-SENSOR - [Objective] To provide a gas sensor having a solid electrolyte body in which an exposed portion thereof achieving a temperature lower than the temperature that burns off soot is covered with a glass coat so as to prevent deterioration in gas concentration detection performance of the gas sensor. | 09-15-2011 |
20110240469 | GAS SENSOR ELEMENT AND METHOD OF MANUFACTURING THE SAME - A gas sensor element ( | 10-06-2011 |
20120103808 | GAS SENSOR - A gas sensor including a plate-shaped laminate disposed in a housing and fixed thereto via an element passage member and formed by laminating a gas sensor element and a heating element. The gas sensor element includes a plate-shaped solid electrolyte member, and a pair of detection electrodes formed on front and back surfaces thereof and constituting, in cooperation with the solid electrolyte member, a detection section for detecting the concentration of a specific gas. Insulating substrates mainly composed of alumina are provided on opposite sides of the laminate in the laminating direction. Coating layers mainly composed of a first material higher in toughness than alumina are formed on at least portions of outer surfaces of the insulating substrates in the laminating direction, the portions facing the element passage member. The coating layers are not formed on surfaces of the laminate parallel to the laminating direction. | 05-03-2012 |
20120111726 | Sensor Element Having Through-Hole Plating - A sensor element and a method of producing a sensor element is described. The sensor element being especially for identifying a physical property of a gas, especially for identifying the concentration of a gas component or the temperature of an exhaust gas of an internal combustion engine. The sensor element has a first solid electrolyte layer, the first solid electrolyte layer having a plated- through hole. The sensor element also has a conducting element which produces an electrically conducting connection from the upper side of the first solid electrolyte layer to the lower side of the first solid electrolyte layer through the plated-through hole. The first solid electrolyte layer in the plated-through hole is electrically insulated from the conducting element by an insulating element. The wall of the plated-through hole has a bevel. | 05-10-2012 |
20120138459 | GAS SENSOR - A gas sensor is provided. The substrate of the gas sensor has a first surface, a second surface and a cavity. The cavity has an opening at the first surface. An insulating film is disposed on the first surface and covers the opening. A heating unit is embedded in the insulating film and located above the opening. An electrode pair is disposed on the insulating film and electrically separated from the heating unit. A buffer layer is disposed on the insulating film and located above the heating unit. The buffer layer is electrically connected to the electrode pair, and at least part of an orthogonal projection of the buffer layer on the first surface is located on the substrate next to the opening. The gas sensing layer is disposed on the buffer layer and has a nano-catalyst therein. | 06-07-2012 |
20120145543 | MULTIGAS SENSOR - A multigas sensor ( | 06-14-2012 |
20120211362 | GAS SENSOR ELEMENT AND GAS SENSOR - There is provided a gas sensor element for detecting the concentration of a specific gas component in gas under measurement, which includes a plate-shaped element body and a porous protection layer. The element body has, at one end portion thereof, a gas sensing portion formed with a solid electrolyte substrate and a pair of electrodes. The porous protection layer has a porous structure formed of ceramic particles and surrounds at least the circumference of the one end portion of the element body. In the present invention, the porous protection layer has an inner region, an intermediate region and an outer region laminated together in order of mention from the element body toward the outside. The intermediate region has a porosity lower than those of the inner and outer regions. There is also provided a gas sensor with such a gas sensor element. | 08-23-2012 |
20120217160 | GAS SENSOR ELEMENT AND GAS SENSOR - There is provided a gas sensor element, including a solid electrolyte layer, a pair of sensor electrodes arranged on a front side of the solid electrolyte layer, a pair of sensor leads arranged on a rear side of the solid electrolyte layer and connected to the respective sensor electrodes; and insulating layers, one of which is arranged between one of the sensor leads and the solid electrolyte layer and the other of which is arranged between the other sensor lead and the solid electrolyte layer. The sensor electrodes have rear end portions located on the insulating layers and overlapping front end portions of the sensor leads, respectively. The sensor leads are denser than the sensor electrodes and have front ends located in the same positions as or positions rear of front ends of the insulating layers, respectively. There is also provided a gas sensor with such a gas sensor element. | 08-30-2012 |
20120312685 | GAS SENSOR - A gas sensor has a cylindrical housing case, a gas sensor element as a sensor component, and a filler portion. The filler portion is formed between the inner surface of the cylindrical housing case and the outer surface of the gas sensor element. The filler portion is filled with filler powder composed of talc as a layered compound. Talc is a principal ingredient of the filler powder. The space formed between the cylindrical housing case and the gas sensor element is sealed with the filler powder in the filler portion. The filler powder in the filler portion has a degree of c-axis orientation within a range of 60% to 85%, The filler powder in the filler portion has a porosity of not more than 10%. | 12-13-2012 |
20120325661 | GAS SENSOR - A gas sensor includes a plate-like gas sensor element, a tubular metallic shell which holds the gas sensor element, and a seal member disposed between the inner surface of the metallic shell and outer surface of the gas sensor element. The gas sensor further includes a metal packing having a through-hole of substantially rectangular cross section through which the gas sensor element extends, and pressing forward the seal member with a flat surface thereof in direct contact with the rearward oriented surface of the seal member. The flat surface of the metal packing has an outside diameter equal to or greater than that of the rearward oriented surface of the seal member. A clearance between an inner edge of the flat surface of the metal packing and the surface of the gas sensor element is one-half or less the thickness of the gas sensor element. | 12-27-2012 |
20130032480 | GAS SENSOR - A gas sensor ( | 02-07-2013 |
20130068616 | ELECTROCHEMICAL GAS SENSOR AND METHOD FOR CLAMPING THE SAME - An electrochemical gas sensor includes: a disc-shaped metal bottom member; a cylindrical metal side member that extends along the axial direction of the bottom member to surround the bottom member; a ring-shaped polymer gasket that includes an opening in the center and in which both sides of the opening each have an L-shaped member in cross section, with one section of the L-shaped member being in contact with the inner side of the side member and the other section of the L-shaped member being in contact with the bottom member; a gas sensor body that is located in the opening of the gasket and whose bottom surface is in contact with the bottom member and that includes a pair of electrodes and a solid electrolyte membrane or a separator retaining a liquid electrolyte; and a metal cover that is in contact with the top surface of the gas sensor body. | 03-21-2013 |
20130192988 | GAS SENSOR ELEMENT AND GAS SENSOR - A gas sensor element in which an adhesion layer ( | 08-01-2013 |
20130192989 | MICROMECHANICAL SOLID-ELECTROLYTE SENSOR DEVICE AND CORRESPONDING PRODUCTION METHOD - A micromechanical solid-electrolyte sensor device includes a micromechanical carrier substrate having a front side and a back side. The micromechanical solid-electrolyte sensor device also includes a first porous electrode and a second porous electrode. The micromechanical solid-electrolyte sensor device also includes a solid-electrolyte embedded between the first porous electrode and the second porous electrode. | 08-01-2013 |
20130206596 | DETERIORATION DIAGNOSIS DEVICE FOR CATALYST - A deterioration diagnosis device, which performs a deterioration diagnosis of a catalyst, includes an exhaust-gas sensor provided downstream of the catalyst in a flow direction of exhaust gas such that an output value of the exhaust-gas sensor is used at least in the deterioration diagnosis. The deterioration diagnosis device further includes the constant current supply portion which applies a voltage to a sensor element of the exhaust-gas sensor to change an output characteristic of the exhaust-gas sensor, a response-time detection portion which detects a response time required for the output value of the exhaust-gas sensor to change from a rich threshold to a lean threshold, a response-time correction portion which controls the constant current supply portion to change the output characteristic of the exhaust-gas sensor so as to shorten the response time when the response time is longer than a predetermined reference time. | 08-15-2013 |
20130240354 | GAS SENSOR ELEMENT AND ITS MANUFACTURING METHOD - A gas sensor element includes a basal body, at least one solid electrolyte portion and a pair of electrodes. The basal body has a bottomed tubular shape and is made of an electrically insulative ceramic material. The basal body has a side wall and a bottom wall. The at least one solid electrolyte portion is formed in the bottom wall or the side wall of the basal body. The pair of electrodes are opposed to each other with the at least one solid electrolyte portion interposed therebetween. The difference in surface level between the basal body and the at least one solid electrolyte portion at a boundary therebetween is less than or equal to 30 μm. | 09-19-2013 |
20130264203 | LOW COST CO-FIRED SENSOR HEATING CIRCUIT - A planar device includes a heating circuit that is disposed between ceramic layers and co-fired with the ceramic. The heating circuit comprises palladium, and the co-firing of the palladium and ceramic is performed in an oxidizing atmosphere. The formation of defects in the planar device that would otherwise be induced as a result of the palladium oxidizing during the co-firing process is prevented by control of the firing profile, by the geometry of the pattern of the heating circuit, and/or by modifying the palladium to reduce its tendency to oxidize. | 10-10-2013 |
20130334043 | GAS SENSOR - A gas sensor including a detection element ( | 12-19-2013 |
20140291150 | GAS SENSOR ELEMENT, AND GAS SENSOR - A gas sensor element ( | 10-02-2014 |
20140305798 | A/F SENSOR ELEMENT AND METHOD OF MANUFACTURING THE SAME - An A/F sensor element includes a substrate made of an insulating ceramic having a bottomed cylindrical shape, an electrolyte part made of a solid electrolyte, and a pair of electrode portions. The electrolyte part is embedded in at least a portion of the side wall of the substrate. The A/F sensor element is used by inserting a rod-like heater in the substrate having the bottomed cylindrical shape. The substrate is formed of the insulating ceramic at a contact position to the heater within the substrate. In a manufacturing of the substrate, a molded body having a space for a forming position of the electrolyte part is formed by using substrate-forming clay, and then the molded body is molded by filling electrolyte-forming clay into the space. | 10-16-2014 |
20140311905 | Printed Gas Sensor - A printed gas sensor is disclosed. The sensor may include a partially porous substrate, an electrode layer, an electrolyte layer, and an encapsulation layer. The electrode layer comprises one or more electrodes that are formed on one side of the porous substrate. The electrolyte layer is in electrolytic contact with the one or more electrodes. The encapsulation layer encapsulates the electrode layer and electrolyte layer thereby forming an integrated structure with the partially porous substrate. | 10-23-2014 |
20140311906 | ELECTRODE FOR GAS SENSOR, AND GAS SENSOR - Provided are: an electrode for a gas sensor formed as a porous electrode so as to stably allow reduction in electrode resistance for excellent low-temperature activity; and a gas sensor. The electrode ( | 10-23-2014 |
20140318961 | Gas Detector - A gas detector gas that fuse both the function of an oxygen sensor and the function of a lean air fuel ratio sensor, includes a cover layer, a gas diffusion resistance layer, a buffer, a partitioning layer, a solid electrolyte layer, an air passage layer, and a heating layer stacked in sequence. First and second electrodes are respectively provided on opposite first and second surfaces of the solid electrolyte layer. The partitioning layer includes a slot facing the gas diffusion resistance layer and the first electrode. The air passage layer includes an air passage accessible to the second electrode. The buffer is received in the slot of the partitioning layer. The gas diffusion resistance layer includes outer edges exposed to exhaust gas to be tested. The exhaust gas to be tested enters the gas detector via the outer edges of the gas diffusion resistance layer and reaches a surface of the first electrode of the solid electrolyte layer via the buffer. The buffer has a porosity greater than a porosity of the gas diffusion resistance layer. | 10-30-2014 |
20140326602 | AMPEROMETRIC GAS SENSOR - An amperometric gas sensor for determining oxygen content in a gas mixture includes a solid-state electrolyte. A first electrode configured as a cathode and a second electrode configured as an anode are disposed on the solid-state electrolyte and exposed to the gas mixture. The cathode is in contact with the gas mixture without any interposed diffusion barrier and has a design such that a flow of oxygen molecules from the gas mixture to a three-phase boundary between the solid-state electrolyte, the cathode and the gas mixture is limited in a defined manner. A voltage source configured to apply a DC voltage between the electrodes. A measuring device is configured to measure a limiting current flowing between the electrodes as a measure of the oxygen content in the gas mixture. | 11-06-2014 |
20140339081 | GAS SENSOR - Disclosed is a gas sensor including a metal shell, a ceramic holder placed in an axial inner hole of the metal shell and a sensor element inserted through an insertion hole of the ceramic holder. The ceramic holder has a recessed hole recessed toward the rear from a front-facing surface of the ceramic holder. The sensor element has, at a front end part thereof, a detection portion covered with a porous protection layer such that a rear end part of the protection layer is accommodated in the recessed hole with a space left therebetween. Further, the ceramic holder has a front circumferential edge defined between an inner circumferential surface of the recessed hole and the front-facing surface of the ceramic holder such that the whole of the front circumferential edge is located radially inside of a radially innermost position of the axial hole. | 11-20-2014 |
20140353155 | GAS SENSOR ELEMENT AND GAS SENSOR - A cross-sectional shape of a gap of a gas sensor element has an end point A which is one of contact points at which the cross-sectional shape is in single-point contact with a virtual straight line parallel to a lamination direction, the one contact point being closest to one side of the laminated structure, an end point B which is one of the contact points closest to another side of the laminated structure, an end point C having the greatest separation from a straight line AB toward a solid electrolyte ceramic layer, and an end point D having the greatest separation from the straight line AB toward another ceramic layer. The distance H1 between the straight line AB and the end point C and the distance H2 between the straight line AB and the end point D satisfy 0.25≦H1/H2<1.00 or 1.0012-04-2014 |
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20140360875 | SENSOR - A sensor includes a sensor element and a heating element for heating the sensor element. The sensor element has a front electrode, configured to be exposed to a substance which is to be measured, and a counterelectrode. Electrical contact can be made with the sensor element by electrical contact-making members. In one embodiment, the heating element has an electrically conductive heating structure. At least one of the electrically conductive heating structure, the front electrode, the counterelectrode, and at least one of the electrical contact-making members is constructed at least partially from a large number of particles which are connected to one another. The particles are formed at least partially from a noble metal or a noble metal alloy. A sensor of this kind, in particular a gas sensor or a particle sensor, allows improved production together with good performance. | 12-11-2014 |
20150027888 | EXHAUST GAS SENSOR - A stopper is described for sealing a housing of an exhaust gas sensor, in which the stopper has a base body which contains a fluoroelastomer, and in which the stopper has at least one through channel for leading through a connecting cable. A seal is situated, at least in places, between the base body of the stopper and the through channel. The seal contains at least one thermoplastically processable fluoropolymer-containing material having a melting point or melting range between 170° C. and 320° C. | 01-29-2015 |
20150060274 | GAS SENSOR ELEMENT AND GAS SENSOR - A gas sensor element ( | 03-05-2015 |
20150144487 | EXHAUST GAS SENSOR - An exhaust gas sensor ( | 05-28-2015 |
20150293051 | ELECTRODE FOR USE IN GAS SENSOR AND GAS SENSOR ELEMENT USING THE SAME - In a gas sensor element | 10-15-2015 |
20150308976 | SENSOR EMPLOYING INTERNAL REFERENCE ELECTRODE - The present invention concerns a novel internal reference electrode as well as a novel sensing electrode for an improved internal reference oxygen sensor and the sensor employing same. | 10-29-2015 |
20150323492 | GAS SENSOR - A gas sensor element of an air/fuel ratio sensor includes a plurality of through holes formed in an insulating substrate at forward end regions of corresponding electrode pads to which the through holes are connected. In the gas sensor element, the through holes are not formed within the longitudinal rear end regions and center regions of the electrode pads. Since in each of the electrode pads, the region of the electrode pad other than its forward end region occupies a greater area than that of the forward end region, it is easy to bring connection terminals into contact with the regions of the electrode pads other than their forward end regions. Therefore, it is possible to prevent the connection terminals from coming into contact with the through holes, so as to thereby prevent occurrence of an electrical connection failure between the connection terminals and the electrode pads. | 11-12-2015 |
20150338371 | SENSOR ELEMENT FOR DETECTING AT LEAST ONE PROPERTY OF A MEASURING GAS IN A MEASURING GAS SPACE, CONTAINING A GROUND, IMPREGNATED SLIP LAYER - A method for manufacturing a sensor element for detecting (i) a gas component in a measuring gas or (ii) a temperature of the measuring gas includes: introducing at least one functional element into at least one slip at least once in such a way that a slip layer is applied to the functional element, the functional element including at least one solid electrolyte and at least one functional layer; sintering the slip layer on the functional element; grinding the slip layer at least in the area of the at least one functional layer; impregnating the slip layer; and thermally treating the impregnated slip layer. | 11-26-2015 |
20150377824 | GRAPHENE GAS SENSOR FOR MEASURING THE CONCENTRATION OF CARBON DIOXIDE IN GAS ENVIRONMENTS - A gas sensor for measuring a concentration of carbon dioxide in a gas environment (GE) is provided. The gas sensor includes a graphene layer having a side facing towards the gas environment (GE), an electrode layer including a plurality of electrodes electrically connected to the graphene layer, and a chalcogenide layer covering at least a part of the side of the graphene layer facing towards the gas environment (GE). | 12-31-2015 |
20160011142 | HYDROGEN SULFIDE SENSOR AND METHOD | 01-14-2016 |
20160018357 | GAS SENSOR ELEMENT - A gas sensor element having a porous protective layer with excellent water repellency. Provided is a gas sensor element having a detection portion, which has a stack of a solid electrolyte body having a pair of electrodes on opposite sides thereof and a heat generating body including a heat generating source, and a porous protective layer formed around the detection portion. The porous protective layer has thermal conductivity λ in the range of 0.2 to 5 W/mK, and has λCpp, which is the product of the thermal conductivity λ(W/mK), density ρ(g/m | 01-21-2016 |
20160061767 | METHOD FOR MANUFACTURING A SOLID ELECTROLYTE SENSOR ELEMENT FOR DETECTING AT LEAST ONE PROPERTY OF A MEASURING GAS IN A MEASURING GAS CHAMBER, CONTAINING TWO POROUS CERAMIC LAYERS - A method for manufacturing a sensor element is provided for detecting at least one property of a measuring gas in a measuring gas chamber, in particular for detecting a proportion of a gas component in the measuring gas or a temperature of the measuring gas. The method includes the following steps: providing at least one solid electrolyte which includes at least one functional element; applying, at least in sections, at least one first layer made of a ceramic material to the solid electrolyte, the first layer having a first porosity after the application; and applying, at least in sections, at least one second layer made of a ceramic material, the second layer having a second porosity after the application, and the first layer differing from the second layer with respect to at least one material property. Moreover, a sensor element which is manufacturable according to this method is provided. | 03-03-2016 |
20160091456 | GAS SENSOR ELEMENT, GAS SENSOR, AND METHOD OF MANUFACTURING GAS SENSOR ELEMENT - A gas sensor element ( | 03-31-2016 |
20160161444 | CO SENSOR AND METHOD FOR MANUFACTURING CO SENSOR - A CO sensor | 06-09-2016 |
20160161445 | GAS SENSOR ELEMENT AND GAS SENSOR - A sensor element includes a sensor element main body a including an oxygen ion-conductive solid electrolyte layer and a porous protective layer covering at least part of the sensor element main body. Then, the porous protective layer has the value of the number of interfaces in a unit thickness direction, which is the number of particle interfaces of constituent particles every 100 μm in the thickness direction, of 15 or more and 250 or less. | 06-09-2016 |
20160169830 | SOLID ELECTROLYTE BODY AND GAS SENSOR | 06-16-2016 |
20160169831 | SENSOR MATERIAL AND GAS SENSOR ELEMENT AND GAS SENSOR DERIVED THEREFROM | 06-16-2016 |
20160169832 | SENSOR CONTROL APPARATUS AND GAS DETECTION SYSTEM | 06-16-2016 |
20160202207 | GAS SENSOR ELEMENT, GAS SENSOR, AND METHOD FOR MANUFACTURING GAS SENSOR ELEMENT | 07-14-2016 |
20170234829 | GAS DETECTOR UTILIZING AN AQUEOUS SOLUTION | 08-17-2017 |
20190145925 | SENSOR ELEMENT AND GAS SENSOR | 05-16-2019 |
20190145929 | Sensing Systems and Methods for the Estimation of Analyte Concentration | 05-16-2019 |