A sensor unit for detecting a spatial temperature profile, having: at least one substrate (3, 3'') with a first surface and a second surface situated at least regionally opposite the first surface, wherein the substrate (3, 3'') is configured at least regionally to be flexible; at least one adhesion means, wherein the adhesion means is arranged at least regionally on the first surface and/or on the second surface for attaching the sensor unit to at least one measurement body (15'''); and at least one sensor field, wherein the sensor field is arranged on the second surface of the substrate (3,3''). The present invention also relates to a method for producing a sensor unit.
The invention relates to a method for producing a heater (1) having a co-sintered multi-layer structure for a system for providing an inhalable aerosol, comprising the following steps: providing (1010) at least one first substrate layer (3); arranging (1020) at least one first insulating layer (5) at least in regions on the first substrate layer (3); arranging (1030) at least one heating element (7) at least in regions on the first insulating layer (5); arranging (1040) at least one second substrate layer (3') and at least one second insulating layer (5') at least in regions on the heating element (7), wherein the second insulating layer (5') is arranged at least in regions on the second substrate layer (3'), and wherein the second insulating layer (5') is connected at least in regions to the heating element (7) and/or the first insulating layer (5); pressing (1050) the layers and the heating element (7); and firing (1060) the pressed layers in order to co-sinter the layers of the multi-layer structure.
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
G01K 7/18 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
H01C 1/016 - MountingSupporting with compensation for resistor expansion or contraction
H05B 3/12 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
C04B 37/02 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
The invention relates to a sensor, in particular a high-temperature sensor, comprising at least an entirely ceramic heater (3, 3'); and at least a first sensor structure (9) that is arranged at least in some regions on a first side of the entirely ceramic heater (3, 3'). The present invention also relates to a method (1000) for producing a sensor.
C04B 35/00 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products
G01N 15/06 - Investigating concentration of particle suspensions
G01N 27/14 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
G01N 27/16 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
The invention relates to a sensor (10) for analyzing gases, comprsing at least one housing (30) having a housing interior (130) having a first opening (170) and a second opening (190) offset the first opening (170); at least one sensor element (50), which is at least partly arranged in the housing interior (130); and at least one glass element (19) and at least one supporting element (70), which are arranged in the housing interior (130) in an interspace between a housing wall in the housing interior (130) and the sensor element (50) and surround the sensor element (50) completely, at least in some areas, wherein the glass element (90) is arranged in the housing interior (130) of the housing (30) at the first opening (170) of the housing interior (130) and is adapted to seal off the interspace hermetically in the direction of the first opening (170), and wherein the potting element (70) is arranged on the glass fusible element in the direction of the second opening (190) and is adapted to fix the sensor element (50) in a form-fitting manner in the housing interior (130). The invention further relates to a method (1000) for producing a sensor (10).
The invention relates to a gas measuring device (10) for measuring an exhaust gas flowing in an exhaust pipe (100) of an internal combustion engine. According to the invention, the gas measuring device comprises a housing (20) having at least one housing section (25) arranged outside the exhaust pipe (100), wherein a sensor (50; 50') is provided in the housing section (25). Furthermore, the gas measuring device (10) has a feed channel (30) which diverts a partial exhaust gas stream into the housing (20).
The invention relates to a sensor (10) for detecting electrically conductive and/or polarizable particles, in particular a soot sensor, comprising a substrate (20), an electrode layer (30) which is formed on the substrate (20) and which comprises at least two spatially separated electrodes (31, 32) that engage into each other, wherein at least one cover layer (40) is formed on the side (35) of the electrode layer (30) facing away from the substrate (20). According to the invention, multiple openings (50) are formed in the cover layer (40), said openings at least partially exposing a surface of one electrode (31, 32), in particular of the at least two electrodes (31, 32).
G01N 15/06 - Investigating concentration of particle suspensions
G01N 27/04 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
G01N 15/00 - Investigating characteristics of particlesInvestigating permeability, pore-volume or surface-area of porous materials
7.
METHOD FOR PRODUCING A SENSOR, SENSOR, AND USE OF A SENSOR
The invention relates to a method for producing a sensor, in particular a temperature sensor, comprising at least one electrically conductive layer and at least one further layer, in particular a passivation layer and/or an insulation layer. According to the invention, the electrically conductive layer and/or the further layer, in particular the passivation layer and/or the insulation layer, is produced by means of aerosol deposition (aerosol deposition method, ADM).
C04B 35/03 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
C04B 35/465 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
C04B 35/622 - Forming processesProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products
8.
CABLE, TEMPERATURE DEVICE, AND METHOD FOR PRODUCING A CABLE
The invention relates to a cable (10), in particular for making contact with a sensor (50), comprising a sheath (11), a dielectric (12) and at least one conductor (13), the at least one conductor (13) being arranged in the sheath (11) in such a manner that the conductor (13) is spatially separated from the sheath (11) with the aid of the dielectric (12), the at least one conductor (13) having at least one exposed conductor section (15) which comprises a bent expansion-compensating section (20). According to the invention, the expansion-compensating section (20) has, at least in some sections, an embossed portion which optimises the spring effect and the stiffness of the expansion-compensating section (20).
G01K 7/02 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using thermoelectric elements, e.g. thermocouples
9.
POROUS MATERIAL, POWDER FOR PRODUCING A POROUS MATERIAL, METHOD FOR PRODUCING A POROUS MATERIAL, AND COMPONENT
The invention relates to a porous material, in particular a casting compound for a sensor, wherein, according to the invention, the porous material, in particular the casting compound, has a specific electrical resistance of at least 105 Ω ⋅ cm, particularly of at least 106 Ω ⋅ cm, at a temperature of 1.000 °C.
C04B 35/03 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
C04B 35/08 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on beryllium oxide
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof
10.
SLEEVE FOR COVERING A TEMPERATURE SENSOR, TEMPERATURE MEASURING DEVICE COMPRISING SAID TYPE OF SLEEVE, METHOD FOR JOINING SAID TYPE OF SLEEVE TO A TEMPERATURE MEASURING DEVICE AND USE OF AN ALLOY
The invention relates to a sleeve (10), in particular a protective casing, for covering a sensor, in particular for covering a temperature sensor (70). According to the invention, the sleeve (10) is made from a nickel-chromium-aluminum-iron alloy wherein the alloy is made from 10.0 - 30.0 wt.% chromium (Cr), 0.5 - 5.0 wt.% aluminium (AI), 0.5 - 15.0 wt.% iron (Fe) and 50.0 - 89.0 wt. % nickel (Ni).
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
G01K 1/12 - Protective devices, e.g. casings for preventing damage due to heat overloading
G01K 7/16 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements
11.
CABLE FOR CONTACTING A SENSOR, TEMPERATURE MEASURING DEVICE, METHOD FOR CONNECTING A CABLE TO A TEMPERATURE MEASURING DEVICE AND USE OF AN ALLOY FOR PRODUCING A CABLE
The invention relates to a cable (81) for contacting a sensor (70), in particular a temperature sensor, comprising a cover (82), a dielectric (83) and at least one conductor (84, 84'), the at least one conductor (84, 84') is arranged in the cover (82), such that the conductor (84, 84') is spatially separated from the cover (82) using the dielectric (83), wherein the at least one conductor (84, 84') and/or the cover (82) is/are made from a nickel-chromium-aluminum-iron alloy, said alloy comprising 10.0 - 30.0 wt.% chromium (Cr), 0.5 - 5.0 wt.% aluminium (AI), 0.5 - 15.0 wt.% iron (Fe), and 50.0 - 89.0 wt.% nickel (Ni).
H01B 7/29 - Protection against damage caused by external factors, e.g. sheaths or armouring by extremes of temperature or by flame
H01B 7/28 - Protection against damage caused by external factors, e.g. sheaths or armouring by moisture, corrosion, chemical attack or weather
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
G01K 1/10 - Protective devices, e.g. casings for preventing chemical attack
G01K 7/18 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
12.
SENSOR FOR DETECTING ELECTRICALLY CONDUCTIVE AND/OR POLARIZABLE PARTICLES, SENSOR SYSTEM, METHOD FOR OPERATING A SENSOR, AND USE OF SUCH A SENSOR
The invention relates to a sensor (10) for detecting electrically conductive and/or polarizable particles, in particular for detecting soot particles, comprising a substrate (11), wherein in a first plane (E1), a first structured insulator (20), in a second plane (E2), a first structured electrode layer (31), in a third plane (E3), a second structured insulator (21), and in a fourth plane (E4), a second structured electrode layer (32) are arranged indirectly or directly on at least one side of the substrate (11) in such a way that at least one opening (25, 26, 35, 36) is formed in at least one structured electrode layer (31, 32) and/or one structured insulator (20, 21), which opening is accessible to the particles (30, 30') to be detected, wherein the electrode layers (31, 32) each have at least two electrodes (40, 40', 41, 41') or at least two conducting tracks (38, 39) or a combination of at least one electrode and at least one conducting track.
The invention relates to a sensor (10) for detecting electrically conductive and/or polarizable particles, in particular for detecting soot particles (30), comprising a substrate (11), a first electrode layer (12), and a second electrode layer (13), which is arranged between the substrate (11) and the first electrode layer (12), wherein an insulation layer (14) is formed between the first electrode layer (12) and the second electrode layer (13) and at least one opening (15; 16) is formed in the first electrode layer (12) and in the insulation layer (14), wherein the opening (15) of the first electrode layer (12) and the opening (16) of the insulation layer (14) are arranged one over the other at least in some segments in such a way that at least one passage (17) to the second electrode layer (13) is formed.
SENSOR FOR DETECTING ELECTRICALLY CONDUCTIVE AND/OR POLARIZABLE PARTICLES, SENSOR SYSTEM, METHOD FOR OPERATING A SENSOR, METHOD FOR PRODUCING A SENSOR OF THIS TYPE AND USE OF A SENSOR OF THIS TYPE
The invention relates to a sensor (10) for detecting electrically conductive and/or polarizable particles, in particular for detecting soot particles (30), comprising a substrate (11) and at least two electrode layers (12; 13), a first electrode layer (12) and at least one second electrode layer (13), which is arranged between the substrate (11) and the first electrode layer (12), being provided. At least one insulation layer (14) is formed between the first electrode layer (12) and the at least one second electrode layer (13) and at least one opening (15; 16) is formed in both the first electrode layer (12) and the at least one insulation layer (14), at least some sections of the opening (15) in the first electrode layer (12) and of the opening (16) in the insulation layer (14) being arranged one above the other, such that at least one passage (17, 17', 17'') is formed to the second electrode layer (13).
SENSOR FOR DETECTING ELECTRICALLY CONDUCTIVE AND/OR POLARIZABLE PARTICLES, SENSOR SYSTEM, METHOD FOR OPERATING A SENSOR, METHOD FOR PRODUCING A SENSOR OF THIS TYPE AND USE OF A SENSOR OF THIS TYPE
The invention relates to a sensor (10) for detecting electrically conductive and/or polarizable particles, in particular for detecting soot particles (30), comprising a substrate (11) and at least two electrode layers (12; 13), a first electrode layer (12) and at least one second electrode layer (13), which is arranged between the substrate (11) and the first electrode layer (12), being provided. At least one insulation layer (14) is formed between the first electrode layer (12) and the at least one second electrode layer (13) and at least one opening (15; 16) is formed in both the first electrode layer (12) and the at least one insulation layer (14), at least some sections of the opening (15) in the first electrode layer (12) and of the opening (16) in the insulation layer (14) being arranged one above the other, such that at least one passage (17, 17', 17'') is formed to the second electrode layer (13).
The invention relates to a temperature sensor, in particular a high temperature sensor, comprising a measuring element (10) which comprising a contact wire (11), wherein at least one contact wire (11) is connected to a lead wire (13) by means of a compensating element (12) which is shaped by a meandering flat spring (20). The invention also relates to a waste gas temperature monitoring system and to a method for producing the temperature sensor.
G01K 13/02 - Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
17.
SENSOR ELEMENT, SENSOR MODULE, MEASURING ASSEMBLY AND EXHAUST-GAS RE-CIRCULATION SYSTEM COMPRISING A SENSOR ELEMENT OF THIS TYPE, AND PRODUCTION METHOD
The invention relates to a sensor element (10) with a thin-film structure (11) consisting of platinum or a platinum alloy, said structure being applied to a ceramic substrate (12), in particular an Al2O3 substrate and being covered by a glass-ceramic coating (13). The invention is characterised in that at least the glass-ceramic coating (13) has an outer surface (14) with surface profiling (15). The invention further relates to a sensor module (20), a measuring assembly and an exhaust-gas re-circulation system comprising a sensor element (10) of this type, in addition to a production method for the sensor element (10).
The present invention relates to a ceramic carrier, in particular an Al2O3 carrier, on which a thin-film structure (10) of platinum or a platinum alloy is arranged, wherein the carrier and/or the thin-film structure (10) are adapted in order to reduce mechanical stresses owing to different thermal expansion coefficients. The carrier and/or the thin-film structure (10) comprise the following: e) a surface (11) of the carrier in the region of the thin-film structure (10) is smoothed at least in sections to reduce the adhesion and/or f) a/the surface (11) of the carrier has an intermediate layer (12) on which the thin-film structure (10) is arranged, wherein the thermal expansion coefficient of the intermediate layer (12) is from 8*10-6/K to 16*10-6/K, in particular from 8.5*10-6/K to 14*10-6/K, and/or g) the thin-film structure (10) has at least one conductor path (13) that is undular at least in sections, said conductor path extending laterally along a/the surface (11) of the carrier, wherein the amplitude of the undular conductor path (13) is from 0.2*B to 2*B, in particular from 0.4*B to 1*B, and the wavelength of the undular conductor path (13) is from 3*B to 10*B, in particular from 4*B to 7*B, where "B" is the width of the conductor path (13), and/or h) a first coating (14a) is applied directly to the thin-film structure (10), said coating containing oxide nanoparticles, in particular of Al2O3 and/or MgO.
G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
G01K 7/18 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
G01N 15/06 - Investigating concentration of particle suspensions
H05B 3/12 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
H01C 1/016 - MountingSupporting with compensation for resistor expansion or contraction
H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors
H01C 3/12 - Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids the resistive element having zig-zag or sinusoidal configuration lying in one plane
H01C 17/065 - Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick-film techniques, e.g. serigraphy
H01C 17/08 - Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thin-film techniques by vapour deposition
19.
GAS SENSOR FOR MEASURING DIFFERENT GASES AND ASSOCIATED PRODUCTION PROCESS
The invention relates to a gas sensor (1) for measuring the concentrations of gases, in particular of oxygen and at least of one further gas, preferably at least of an oxidizable exhaust gas component in the form of a further gas, wherein the gas sensor (1) has a solid-state electrolyte (3), at least three electrodes (5a, 5b, 6) and a closed chamber (7). According to the invention, the doped platinum comprises at least 50% by weight platinum, remainder, at least one further element selected from the group consisting of the solid-state electrolytes, in particular the doped platinum comprises between 0.5% by weight and 15% by weight ZrO2, remainder comprising the platinum, or the pure platinum comprises 100% by weight platinum, and the gold alloy comprises at least 50% by weight gold and at most 50% by weight platinum, in particular the gold alloy comprises approximately 85% by weight gold and approximately 15% by weight platinum, or the gold alloy comprises at least gold and platinum in the ratio of 85% gold to 15% platinum, preferably the gold alloy comprises gold and platinum in the ratio of 85% gold to 15% platinum and additionally at least 0.5% by weight to 15% by weight of a solid-state electrolyte, in particular ZrO2. Moreover, the invention relates to an apparatus for producing gas sensors, to a process for producing gas sensors, to a method for measuring the 20 concentrations of gases, to a gas sensor apparatus and to the use of a gas sensor.
The invention relates to a method for producing a soot sensor, comprising the method steps of applying a contiguous metal layer to an electrically insulating substrate (1); structuring the metal coating with a laser beam by vaporizing areas of the metal layer, wherein at least two interleaved contiguous electrically conductive structures (2, 3) are produced and the electrically conductive structures (2, 3) are spatially separated from one another with the laser beam and are electrically insulated from one another in such a manner that the conductive structures (2, 3) substantially run beside one another and close to one another in this area based on the total length thereof. The invention also relates to a soot sensor produced using a method according to one of the preceding claims, in which the soot sensor has an electrically insulating substrate (1) and at least two contiguous electrically conductive structures (2, 3), which are spatially separate from one another and are interleaved, as structured metal layers, wherein the intermediate space between the conductive structures (2, 3) is burned free with a laser, the intermediate space is preferably smaller than 50 µm at least in certain areas, and contact is made with the heating coils using widened conduction layers (14).
G01N 15/06 - Investigating concentration of particle suspensions
G01N 27/22 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
G01N 27/04 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
The invention relates to a temperature sensor, particularly a high-temperature sensor, having a coated substrate (16), at least one resistor structure (11) and at least two connection contacts (12, 13). The connection contacts (12, 13) electrically contact the resistor structure (11) and the substrate (16) is made of zirconium oxide or a zirconium oxide ceramic, wherein the zirconium oxide or the zirconium oxide in the zirconium oxide ceramic is stabilized with oxides of a trivalent and a pentavalent metal. The substrate (16) is coated with an insulation layer (17) and the resistor structure (11) and the free regions of the insulation layer (17), on which no resistor structure (11) is arranged are coated, at least in certain regions, with a ceramic intermediate layer, (18) and a protective layer (19) and/or a cover (20) is arranged on the ceramic intermediate layer (18). The invention also relates to a temperature sensor, particularly a high-temperature sensor, having a substrate (16), at least one resistor structure (11) and at least two connection contacts (12,13). The connection contacts (12, 13) electrically contact the resistor structure (11) and at least one electrode (14 15) is arranged, at least at one connection contact (12, 13), alongside the resistor structure (11) on the substrate (16). The electrode (14, 15) or the electrodes (14, 15) is or are formed integrally with the resistor structure (11). The resistor structure (11) and the free regions of the substrate (16), on which the resistor structure (11) is not arranged, are coated at least in certain regions with a ceramic intermediate layer (18), and a protective layer (19) and/or a cover (20) is arranged on the ceramic intermediate layer (18). Finally, the invention also relates to the use of such temperature sensors in an exhaust system for controlling and/or regulating an engine, particularly a motor vehicle engine.
G01K 7/18 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
The invention relates to a stamping die for hot-stamping a material comprising a profiled stamping surface, wherein the stamping die comprises at least one thermally insulating substrate, on which an electrically conducting structure comprising a heating resistor is arranged, and wherein the electrically conducting structure is covered with an electrically insulating layer, wherein the surface of the electrically insulating layer comprises the profiled stamping surface and the electrically insulating layer covers at least the heating resistor, with the result that the electrically insulating layer can be heated with the stamping surface electrically by the heating resistor. The invention also relates to a method for hot-stamping a material by way of a stamping die of this type, in which method the heating resistor is heated to a temperature between 100°C and 800°C, preferably between 200°C and 600°C, particularly preferably between 300°C and 400°C. Finally, the invention also relates to a method for producing a stamping die of this type, in which method A) a thermally insulating substrate is provided, B) an electrically conducting structure comprising a heating resistor is applied on the thermally insulating substrate, in particular by way of a thick-film process, is particularly preferably printed on, and C) the electrically conducting structure is covered at least in regions with an electrically insulating layer, preferably by way of a screen-printing process or thick-film technology.
B41F 17/00 - Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
H05B 3/30 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material on or between metallic plates
H05B 3/28 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
The invention relates to a temperature sensor, in particular a high-temperature sensor, comprising a substrate, at least two connecting contacts and at least one resistor structure, wherein the connecting contacts and the at least one resistor structure are arranged on a first side of the substrate and wherein electrical contact is made with at least one of the resistor structures via the connecting contacts, wherein, on each of the two connecting contacts, at least one electrode is arranged beside the resistor structure on the first side of the substrate and is connected electrically to the respective connecting contact or, on at least one connecting contact, at least one electrode is arranged beside the resistor structure on the first side of the substrate, wherein the electrode(s) is/are integral with the resistor structure. The invention also relates to a high-temperature sensor comprising such a temperature sensor. The invention also relates to a method for producing such a temperature sensor, in which at least one resistor structure is applied to a first side of a substrate, wherein a preferably metallic coating is applied to the substrate in such a way that the coating forms the at least one resistor structure, at least two connecting contacts and at least one electrode, so that the connecting contacts make electrical contact with the at least one resistor structure, and at least one electrical contact makes electrical contact with at least one electrode.
G01K 7/18 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
G01K 1/10 - Protective devices, e.g. casings for preventing chemical attack
In a sensor, in particular an impedance sensor, for example a soot sensor, which has two electrodes which are electrically insulated from another, wherein at least one outer electrode comprising a composite of metal and inorganic oxide is in the form of a layer pattern with a layer thickness of 0.5 to 20 μm, the track width of the layer pattern and the distance between the tracks are 5 to 70 μm according to the invention and the edge region fluctuates around the conductor track edge by less than 10 μm. Both electrodes may be arranged beside one another as a layer pattern in a plane. The sensor preferably has a heater. For mass production, electrodes are produced on electrically insulating oxidic substrates to form a layer pattern with a layer thickness of 0.5 to 20 μm and, after the entire surface has been overprinted with a paste containing metal powder and oxide, the electrodes are patterned in a particularly accurate manner from the printed layer to form tracks. In particular, the layer thickness of the printed layer is reduced.
G01N 27/22 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
G01N 15/06 - Investigating concentration of particle suspensions
25.
HIGH-TEMPERATURE SENSOR HAVING CHIP WIRES MADE OF IRON ALLOYS FORMING CHROMIUM OXIDE
The invention relates to producing a high-temperature sensor having a conductor structure (3) on a substrate (1) and ending at contact pads (pads 4, 5), wherein connecting wires (10, 11) based on non-noble metals are attached to the contact pads (4, 5, 7, 8) by contact welding. A glass or glass ceramic paste is subsequently burned into the area of the contact pads (4, 5) and covers the contact pads (4, 5, 7, 8) and the ends of the conductor(s) and connecting wires. According to the invention, the thermal expansion coefficients up to 1000°C for the ceramic substrate (1) and the connecting wires (10, 11) differ by less than 7 x 10-4/K, particularly by less than 5 x 10-4/K, and the connecting wires (10, 11) comprise an electrically conductive oxide skin under the conditions of contact welding. The resistance of the connecting wires (10, 11) at 200°C is in particular less than 90 μΩcm, in particular less than 80 μΩcm. An iron alloy forming a chromium oxide, in particular chromium-manganese spinel, has been proven effective as a base material of the connecting wire. Said high-temperature sensors or film resistors function at temperatures between 800°C and 900°C.
G01K 7/18 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
The invention relates to a resistance thermometer having a measuring resistor in the form of a structured platinum layer 0.1 to 10 µm thick applied to an electrically insulated surface of a substrate and having an electrically insulating coating layer, wherein the substrate or the surface thereof comprises zirconium dioxide stabilized by oxides of a trivalent and a pentavalent metal. The trivalent metal is in particular yttrium, and the pentavalent metal is in particular tantalum or niobium. The characteristic curve of the measurement resistor preferably conforms to DIN-IEC 751. For mass production of resistance thermometers having high and reproducible measurement accuracy, a structure platinum layer 0.1 to 10 µm thick is applied to an electrically insulating substrate having a thermal expansion coefficient in the range of 8.5 through 10.5 x 10-6/K and a roughness less than 1 µm, and the structured platinum layer is electrically insulatively covered. Resistance thermometers according to the invention allow precise temperature measurement between –200°C and +850°C, in particular as a sensor in an exhaust gas treatment system. In a material-sensitive sensor having a circuit path structure on a substrate, the circuit path structure comprises an epitactically applied base layer, and a material-sensitive metal layer attached to the epitactically applied base layer.
G01K 7/18 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
G01N 27/02 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
A single ion conductor is used for measuring environmentally polluting components of exhaust gas, in particular as an oxygen pump. To determine NOx in the exhaust gas, a sensor chip which has a single ion conductor for determining NOx is fitted in the exhaust gas conduit. The sensor chip preferably has a heating resistor and is heated by the latter. A chip with a heating conductor and an oxygen pump on its substrate is provided with an exhaust protector. The external electrode of an oxygen pump contains not only platinum but also at least 20% by weight gold, rhodium, ruthenium, palladium or silver. Arranged on an electrically insulating surface of a substrate is a resistance structure and, parallel to and at a distance from said structure, an ion conductor, which as a cover closes off a space between the substrate and the side walls.
In order to produce a soot sensor chip in which a conductor track structure is applied on an electrically insulating support, according to the invention the electrically insulating support is produced by removing binder, in particular SiO2, from the surface of an aluminium oxide substrate or by applying aluminium oxide without binder additive to the surface of a substrate. A soot sensor chip according to the invention has a conductor track structure on sapphire or an Al2O3 surface which is applied or sintered without SiO2 additive or is applied or sintered with a purity of 99.99% by weight or has a surface roughness reduced by comparison with a combustion skin.
The invention relates to the arrangement of a sheet resistor (chip) in an exhaust pipe or exhaust gas recirculation pipe. The sheet resistor is mounted in a support which is sealed from a shield or a housing that is tightly connected to the exhaust pipe or exhaust gas recirculation pipe. The support and the shield or the housing are sealed from one another radially outside the exhaust pipe or exhaust gas recirculation pipe, at a distance therefrom.
The invention relates to a temperature sensor, particularly a high-temperature sensor, in which a mineral-insulated cable or a heat disconnecting wire is arranged between the measuring resistor (chip) and the feeder cable. The invention is characterized in that springs, by means of which the measuring resistor is contacted or the heat disconnecting wire is clamped at the end facing the measuring resistor and is resiliently connected to the feeder cable at the other end, are plugged onto the strands of the mineral-insulated cable.
Disclosed is a measuring instrument, particularly an anemometric measuring instrument of a flow sensor, comprising sheet resistors in one or several openings of a cover or a hollow member. The inventive sheet resistors are mounted in the opening/s. The resistance of two sheet resistors differs by one to three magnitudes. A temperature sensor and a heating capacity sensor are inserted into a support element of an inventive anemometric measuring instrument of a flow sensor. The temperature sensor is equipped with a temperature measuring resistor and a heating conductor as platinum thin-film or thick-film resistors on a ceramic support. In order to self-clean an anemometric measuring instrument of a flow sensor in which a temperature measuring element and a heating element are inserted into a support element, the temperature measuring element is provided with a platinum thin-film resistor on a ceramic support for measuring the temperature and is heated with the aid of an additional platinum thin-film resistor. In order to produce an anemometric measuring instrument of a flow sensor from sheet resistors and a cover or a hollow member, two sheet resistors that differ by one to two magnitudes are inserted into openings of the cover or the hollow member and are fastened in the openings.
A sensor chip (2, 3) having an electrically conductive thick-film structure, on the insulating base of which an electrically conductive thin-film structure is directly coated with an electrically conductive thick-film structure, is provided. According to the invention, an electrical sensor comprising that sensor chip (2, 3) and a printed circuit board has at least one FC or SMD chip (2, 3) which is fastened to a printed circuit board. According to the invention, an electrical sensor having a plurality of measuring units, comprising at least one first component as a printed circuit board (1), a second component (2) and a third component (3) as an FC or SMD component with respectively different conductor tracks on an electrically insulating base, wherein a printed circuit board (1) is electrically connected to at least one FC or SMD carrier component (2) by means of electrical contacts and is held mechanically, has an FC or SMD component (3) which is electrically connected to the FC or SMD carrier component (2), which is fastened to the printed circuit board (1), by means of further electrical contacts and is held mechanically. In the case of an electrical sensor having an FC or SMD carrier component (2) which is fastened to a printed circuit board, at least one conductor track which is designed using thick-film or thin-film technology is partially covered with an electrically insulating layer and the electrically insulating layer which partially covers said conductor track is, in turn, partially covered with an electrically conductive layer.
G01N 27/07 - Construction of measuring vesselsElectrodes therefor
H05K 3/34 - Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
The invention enables the reproducible production of miniaturised sensors with extremely high selectivity and precision by means of an electrical sensor. According to the invention, a metallic strip conductor (1) is grown in a targeted manner (epitaxially) on a monocrystalline, electrically insulating surface (2), the layer thickness of the strip conductor being less than 50 nm. The invention also relates to the use of an electrical sensor having an epitaxially grown resistance structure (1) on the monocrystalline, electrically insulating surface of a substrate (2) for determining substances adsorbed on the resistance structure.
G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
G01N 27/14 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
The invention relates to a method for the self-cleaning of a flow sensor element in which a temperature-measuring element and a heating element are arranged on a carrier element, wherein the temperature-measuring element has a platinum thin-film resistor on a ceramic base for measuring the temperature and is heated using an additional platinum thin-film resistor, and to a flow sensor element in which a temperature-measuring element and a heating element are arranged on a carrier element, and to the use of such a flow sensor element. A flow sensor element according to the invention may also have a multipart ceramic component which comprises a carrier element, a temperature-measuring element and a heating element. A measuring device, in particular an anemometric measuring device of a flow sensor, contains sheet resistors in one or more openings in a cover or hollow body. According to the invention, the sheet resistors are fastened in the opening(s). The resistances of two sheet resistors differ by one to three orders of magnitude. In the case of an anemometric measuring device of a flow sensor, a temperature sensor and a heat output sensor are plugged, according to the invention, into a carrier element. The temperature sensor has a temperature-measuring resistor and a heating conductor in the form of platinum thin-film or thick-film resistors on a ceramic base.
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