Abstract: The present disclosure relates to a method for manufacturing a pressure sensor having a main body and a pressure-sensitive ceramic measurement membrane, wherein an outer edge of the measurement membrane is connected in a pressure-tight manner by an encircling joint to a surface of the main body facing the outer edge of the measurement membrane, wherein the joint includes a ternary active hard solder in eutectic composition: providing the main body, the measurement membrane and the active hard solder; positioning the active hard solder between the outer edge of the measurement membrane and the surface of the main body; heating the main body, the measurement membrane and the active hard solder to a joining temperature which essentially corresponds to a temperature of the eutectic point of the active hard solder.

Abstract: A sensor apparatus for determining and/or monitoring a process variable of a medium in a containment includes: a crystal body including at least one defect; a magnetic field system for producing a magnetic field in the region of the crystal body and in the region of the medium within the containment, wherein the crystal body and the magnetic field system are arrangeable from the outside at a wall of the containment; a detection unit for detecting a magnetic field-dependent, fluorescent signal from the crystal body, wherein the detection unit has an excitation unit for optical exciting of the defect and a detector for detecting the fluorescent signal; and an evaluation unit for ascertaining at least one piece of information concerning the process variable based on the fluorescent signal.

Abstract: A pressure measuring device includes a ceramic pressure sensor including a ceramic measuring membrane and a sensor mounting configured to secure the pressure sensor such that a membrane region of the measuring membrane surrounded by a membrane edge is contactable with a medium having a pressure to be measured. The sensor mounting includes a titanium or titanium alloy mounting element including an opening through which the membrane region is contactable with the medium. The membrane edge is connected directly with the mounting element by a diffusion weld produced by a diffusion welding method.

Abstract: A pressure measuring device includes a ceramic pressure sensor including a ceramic measuring membrane and a sensor mounting configured to secure the pressure sensor such that a membrane region of the measuring membrane surrounded by a membrane edge is contactable with a medium having a pressure to be measured. The sensor mounting includes a titanium or titanium alloy mounting element including an opening through which the membrane region is contactable with the medium. The membrane edge is connected directly with the mounting element by a diffusion weld produced by a diffusion welding method.

Abstract: A pressure measurement cell is disclosed including a base body, substantially cylindrical at least in sections, a measuring membrane joined to the base body in a pressure-tight manner along a perimeter joint to form a measurement chamber between the base body and the measuring membrane, and a joining material that joins the perimeter joint between the base body and the measuring membrane. The base body and/or the measuring membrane have/has a stepped recess into which the joining material is at least partially disposed, the stepped recess structured to yield a minimum distance between the base body and the measuring membrane.

Abstract: A component arrangement comprising a first component which has a first joining surface and a second component which has a second joining surface. The first joining surface is connected to the second joining surface using an integrated reactive material system. The integrated reactive material system comprises at least one coating of at least one of the joining surfaces, and the integrated reactive material system comprises an activation region on one surface. The integrated activation region is arranged outside of the joined together regions of the first or second joining surfaces and adjoins the regions which are joined together.

Abstract: A pressure transducer for determining a pressure variable, comprising at least a pressure sensor with a measuring membrane and resistance elements integrated in the measuring membrane. The pressure sensor is arranged between a first and a second counter body, such that a pressure chamber forms between the measuring membrane and the first counter body, which pressure chamber can be subjected to a first pressure; wherein the side of the measuring membrane facing towards the second counter body can be subjected to a second pressure, and a displacement of the measuring membrane dependent upon the first and second pressures set.

Abstract: A method for producing a connection between two surfaces or surface sections of two ceramic parts comprises: provision of a first ceramic part and of a second ceramic part; provision of an active brazing solder material on at least one surface section of at least one of the ceramic parts; and heating the active brazing solder in a vacuum brazing process. The whole active brazing solder material is provided for connecting the first and the second ceramic part by a sputtering method, wherein at least one surface section of at least one of the ceramic parts, preferably of the two ceramic parts, is layered with a layer sequence of individual components of the active brazing solder material, wherein the average strength of the layers of an individual component of the active brazing solder is no more than 0.5%, in particular not more than 0.2%, preferably not more than 0.1% and especially preferably not more than 0.05% of the strength of the joining region.

Abstract: A pressure sensor comprising: a solid metal sensor body, having a front region and a base adjoining thereto, which has an outer edge, which can be clamped by means of a fastening device; a recess, which is provided in the front region and is open towards a front side of the front region that faces away from the base; a metal measuring diaphragm, to which a pressure is applied from outside during measurement operation and which can be deformed elastically depending upon the pressure, is arranged on the front side of the sensor body, closes off the recess from the outside, and is spaced apart from the outer edge of the front region; and an electromechanical transducer for detection, by means of measuring the pressure-dependent deformation of the measuring diaphragm, having at least one measuring element, which is electrically insulated from the measuring diaphragm and the sensor body by means of an insulating element.

Abstract: The pressure sensor of the invention includes at least one platform, at least one measuring membrane 30, and a transducer, wherein the measuring membrane comprises a semiconductor material, wherein the measuring membrane, enclosing a pressure chamber, is secured on the platform, wherein the measuring membrane is contactable with at least one pressure and is elastically deformable in a pressure-dependent manner, wherein the transducer provides an electrical signal dependent on deformation of the measuring membrane, wherein the platform has a membrane bed, on which the measuring membrane lies in the case of overload, in order to support the measuring membrane, wherein the membrane bed 21 has a glass layer 20, whose surface faces the measuring membrane and forms a wall of the pressure chamber, wherein the surface of the glass layer has a contour, which is suitable for supporting the measuring membrane 30 in the case of overload, characterized in that the contour of the membrane bed 21 is obtainable by a sagging

Abstract: A pressure sensor includes a sensor body with a sensor chamber in the interior, at least a first separating membrane, forming a first separating membrane chamber connected with the sensor body. A measuring membrane divides the sensor chamber into two chamber portions. A pressure transfer liquid, with which the first separating membrane chamber, the first chamber portion and a channel therebetween are filled, in order to transfer a pressure to the measuring membrane; wherein the pressure sensor is specified for a temperature range between a minimum temperature and a maximum temperature, as well as for a pressure range.

Abstract: A pressure difference sensor, comprising a pressure difference measuring cell having a measuring membrane, two platforms, between which the measuring membrane is arranged, and a transducer, as well as an elastic clamping apparatus, which has two clamping areas, each of which acts on a respective rear side of the platform facing away from the measuring membrane. The clamping apparatus has at least one elastic element, via which the clamping areas are mechanically coupled, in order to clamp the pressure difference measuring cell with an axial clamping force. The clamping areas are rigid, wherein the clamping apparatus comprises a clamp with two clamping bodies, each of which has one of the clamping areas. At least one of the clamping bodies has an elastic element, the clamping bodies are connected with one another under stress, in order to exert a clamping force on the pressure difference measuring cell, wherein the two clamping bodies have a central, form retaining section, which includes the clamping areas.

Abstract: A differential pressure sensor comprises a measuring diaphragm made of an electrically conductive material, two electrically insulating mating bodies, and at least one capacitive transducer. The measuring diaphragm is connected to the mating bodies in a pressure-tight manner with the formation of a measuring chamber in each case along a circumferential edge. The mating bodies each have a diaphragm bed which is concave in the center, wherein the mating bodies each have a pressure channel which extends through the mating body into the measuring chamber. The capacitive transducer has at least one mating body electrode which is formed by a metallic coating of the surface of the mating body in the region of the diaphragm bed and with which contact can be made by a metallic coating of the wall of the pressure channel.

Abstract: A sintered body comprises a first region which comprises a first material having a first effective coefficient of thermal expansion ?1, a second region which comprises a second material having a second effective coefficient of thermal expansion ?2, a transition region between the first region and the second region in which the effective coefficient of thermal expansion changes from the first effective coefficient of thermal expansion to the second effective coefficient of thermal expansion. The transition region has a sequence of layers with a mixture of at least the first material and the second material, with the mixing ratio of the layers varying in order to achieve a stepwise, in particular monotonic, change in the coefficient of thermal expansion.

Abstract: A ceramic pressure sensor is described which is produced using an alternative production method and has a ceramic base body, a ceramic measuring membrane which is disposed on the base body and is to be charged with a pressure to be measured, and a pressure measuring chamber enclosed in the base body below the measuring membrane. A method to produce the pressure sensor by means of which, in particular, more complex shapes of the measuring membrane and/or the base body are producible with minimal pores wherein the base body and/or the measuring membrane have layers applied on each other in a 3-D printing method and produced by the selective laser melting of nanopowder layers.

Abstract: A pressure measurement cell is disclosed including a base body, substantially cylindrical at least in sections, a measuring membrane joined to the base body in a pressure-tight manner along a perimeter joint to form a measurement chamber between the base body and the measuring membrane, and a joining material that joins the perimeter joint between the base body and the measuring membrane. The base body and/or the measuring membrane have/has a stepped recess into which the joining material is at least partially disposed, the stepped recess structured to yield a minimum distance between the base body and the measuring membrane.

Abstract: Pressure transducer for determining a pressure variable, comprising at least a pressure sensor with a measuring membrane and resistance elements integrated in the measuring membrane, wherein the pressure sensor is arranged between a first and a second counter body, such that a pressure chamber forms between the measuring membrane and the first counter body, which pressure chamber can be subjected to a first pressure; wherein the side of the measuring membrane facing towards the second counter body can be subjected to a second pressure, and a displacement of the measuring membrane dependent upon the first and second pressures set; wherein the pressure-dependent displacement of the measuring membrane can be detected by the resistance elements and, via a bridge voltage of a bridge circuit formed with the resistance elements, a pressure variable can be determined; wherein the measuring membrane has a membrane electrode and the second counter body has at least one counter body electrode on the side facing towards

Abstract: A method according to the invention for producing a connection between two surfaces or surface sections of two ceramic parts comprises: provision of a first ceramic part and of a second ceramic part; provision of an active brazing solder material on at least one surface section of at least one of the ceramic parts; and heating the active brazing solder in a vacuum brazing process. The whole active brazing solder material is provided for connecting the first and the second ceramic part by a sputtering method, wherein at least one surface section of at least one of the ceramic parts, preferably of the two ceramic parts, is layered with a layer sequence of individual components of the active brazing solder material, wherein the average strength of the layers of an individual component of the active brazing solder is no more than 0.5%, in particular not more than 0.2%, preferably not more than 0.1% and especially preferably not more than 0.05% of the strength of the joining region.

Abstract: A hydraulic measuring mechanism for registering pressure differences, comprising a measuring mechanism platform having a process connection surface and two pressure input openings, in which, in each case, a pressure tube is arranged, which protrudes from a rear side of the measuring mechanism platform to support a pressure difference measuring cell, wherein the pressure tubes are connected pressure-tightly with the measuring mechanism platform from the process connection surface.

Abstract: A pressure difference sensor includes a pressure difference measuring cell, which has a measuring cell platform with pressure contactable measuring chambers in its interior, a first mounting surface and a second mounting surface. The mounting surfaces have a variable separation under pressure loading of the measuring chambers. A first reinforcement element with a first planar reinforcement area and a second reinforcement element with a second planar reinforcement area.