Abstract: A pressure-measuring sensor having an electrically-conductive separating diaphragm closing off an interior chamber of the pressure-measuring sensor to the outside, to whose exterior surface a liquid medium under pressure can be applied, and having a device for detecting a diaphragm rupture of the separating diaphragm. At least one electrode is arranged on an interior surface of the separating diaphragm which faces the interior chamber, said electrode being electrically insulated from the separating diaphragm by an insulating layer arranged between the electrodes and the separating diaphragm and mechanically connected to the separating diaphragm, a measuring circuit is connected to a capacitor formed by the separating diaphragm and the electrode, said measuring circuit measuring and monitoring a measured variable dependent upon an electrical property of the capacitor, which is changed by a medium penetrating into the area of the capacitor when a diaphragm rupture of the separating diaphragm occurs.

Abstract: A pressure sensor comprises an operating circuit and a pressure-measuring cell comprising a counter body, a measurement membrane, which is arranged on the counter body and can be deformed by a pressure to be measured, and a capacitive transducer, which has at least one membrane electrode arranged on the measurement membrane and at least one counter-body electrode arranged on the counter body. The capacitance between the membrane electrode and the counter-body electrode depends on a pressure-dependent deformation of the measurement membrane, wherein at least the membrane electrode has a temperature-dependent impedance. The operating circuit is designed to sense at least one capacitance between the at least one counter-body electrode and the at least one membrane electrode and to provide a pressure measurement value on the basis of at least one capacitance and to determine the impedance of the membrane electrode—particularly, the ohmic portion of the impedance of the membrane electrode.

Abstract: A flange-set for a pressure difference measuring transducer with two flanges mountable on external sides of a measuring mechanism of the pressure difference measuring transducer lying opposite one another and containing membranes to be loaded with pressures, as well as a pressure difference measuring transducer equipped with the flange-set. Each of the flanges comprises: a wall, which in the mounted state covers one of the two membranes of the measuring mechanism and encloses a pressure chamber bordering on such membrane. Arranged on a first side of the wall is a first process connection, which includes a pressure duct connection region, in which opens a pressure duct extending through the flange to the pressure chamber.

Abstract: A method for manufacture of at least one component of a field device for determining or monitoring a process variable, wherein the field device is applied in automation technology and is manufactured from at least one material.

Abstract: A pressure sensor, including a platform of ceramic, a measuring membrane arranged on the platform, a pressure measuring chamber enclosed in the platform under the measuring membrane, and at least one metal body connected with the platform via a pressure-tight, preferably elastomer free, mechanical connection. Thermomechanical stresses arising from the connection are reduced by features including that the pressure-tight, mechanical connection occurs via an adapting body arranged between the platform and the metal body. The adapting body has a thermal expansion coefficient, which rises in direction (z) extending from the platform to the metal body from a coefficient of expansion corresponding to a thermal coefficient of expansion of the ceramic of the platform to a coefficient of expansion corresponding to the thermal coefficient of expansion of the metal body, and the adapting body is connected by a first joint with the platform and by a second joint with the metal body.

Abstract: A method for manufacturing a pressure measuring cell, which has a ceramic platform and a ceramic measuring membrane, wherein the measuring membrane is joined with the platform pressure tightly by an active hard solder, or braze, wherein the method includes: providing the platform, the measuring membrane and the active hard solder, or braze, positioning the active hard solder, or braze, between the platform and the measuring membrane; melting the active hard solder, or braze, by irradiating the active hard solder, or braze, by a laser, wherein the irradiating of the active hard solder, or braze, occurs through the measuring membrane; and letting the active hard solder, or braze, solidify by cooling.

Abstract: The present disclosure relates to a method for manufacturing a component of a field device for determining or monitoring a process variable of a medium in a container, wherein the component is created via a 3D printing method, wherein during the creation the component is supplied at an intermediate state of the component with an exciter signal, wherein a response signal of the component to the exciter signal is registered, wherein shape and/or structure of the component are/is modified via the 3D printing method, when the current response signal does not agree with a predetermined response signal, and wherein the two previous method steps are alternately repeated, until the current response signal agrees with the predetermined response signal within predetermined tolerance limits.

Abstract: The invention relates to a method for manufacturing a customer-specific component of a field device for determining or monitoring at least one process variable of a medium, wherein the field device is applied in process automation technology, wherein the component is composed of at least one material, comprising: predetermining material and/or structure and/or shape of the component via digital description data, and producing the component in a 3D printing method in accordance with the predetermined digital description data.

Abstract: A differential pressure measuring cell comprises a measuring membrane; two opposing bodies; and one converter. The measuring membrane is arranged between the opposing bodies and is connected in a pressure-tight manner to the two opposing bodies, forming in each case one measuring chamber. The opposing bodies each have a pressure duct through which a pressure can be made to act upon the respective measuring chamber. The converter is provided in order to convert a deformation of the measuring membrane, which deformation is dependent upon a difference between the pressures, into an electrical signal; wherein the opposing bodies each have a chamber section oriented toward the measuring membrane and a rear wall section oriented away from the measuring membrane with, between these, a decoupling chamber.

Abstract: A pressure sensor, including a platform of ceramic, a measuring membrane arranged on the platform, a pressure measuring chamber enclosed in the platform under the measuring membrane, and at least one metal body connected with the platform via a pressure-tight, preferably elastomer free, mechanical connection. Thermomechanical stresses arising from the connection are reduced by features including that the pressure-tight, mechanical connection occurs via an adapting body arranged between the platform and the metal body. The adapting body has a thermal expansion coefficient, which rises in direction (z) extending from the platform to the metal body from a coefficient of expansion corresponding to a thermal coefficient of expansion of the ceramic of the platform to a coefficient of expansion corresponding to the thermal coefficient of expansion of the metal body, and the adapting body is connected by a first joint with the platform and by a second joint with the metal body.

Abstract: A differential pressure measuring pickup comprises a measuring pickup body and a differential pressure sensor. The measuring pickup body has a process interfacing surface with a first pressure input opening and a second pressure input opening. The differential pressure sensor can be loaded with a first pressure through the first pressure input opening and with a second pressure through the second pressure input opening. The first pressure input opening is closed by way of a first separating diaphragm and the second pressure input opening is closed by way of a second separating diaphragm. The first separating diaphragm is sealed with respect to the surroundings by way of a first seal, and wherein the second separating diaphragm is sealed with respect to the surroundings by way of a second seal.

Abstract: A pressure sensor comprises an operating circuit and a pressure-measuring cell comprising a counter body (1), a measurement membrane (2), which is arranged on the counter body (1) and can be deformed by a pressure to be measured, and a capacitive transducer, which has at least one membrane electrode (7) arranged on the measurement membrane and at least one counter-body electrode (8, 9) arranged on the counter body (2), wherein the capacitance between the membrane electrode (7) and the counter-body electrode (8, 9) depends on a pressure-dependent deformation of the measurement membrane, wherein at least the membrane electrode (7) has a temperature-dependent impedance, wherein the operating circuit is designed to sense at least one capacitance between the at least one counter-body electrode and the at least one membrane electrode and to provide a pressure measurement value on the basis of at least one capacitance and to determine the impedance of the membrane electrode—particularly, the ohmic portion of the imp

Abstract: A method for operating a pressure sensor, which includes a measuring membrane, at least one platform and a capacitive transducer having two pressure dependent capacitances between electrodes on the measuring membrane. The measuring membrane divides a volume pressure-tightly into two volume portions, wherein the second volume portion is enclosed in a measuring chamber between the measuring membrane and the platform. A deflection of the measuring membrane depends on a pressure measurement variable p, which is a difference between a first pressure p1 and second pressure p2 in the volume portions. The pressure measurement variable p follows from both capacitances, wherein, for an intact pressure sensor, the second capacitance is a predetermined function of the first capacitance and, in given cases, the temperature.

Abstract: A method for manufacture of at least one component of a field device for determining or monitoring a process variable, wherein the field device is applied in automation technology and is manufactured from at least one material.

Abstract: A composite material comprises a polymer matrix; and zeolite, which is bonded in the polymer matrix; wherein the percent of volume of the zeolite in the volume of the composite material amounts to at least 50%, in particular at least 65%. The polymer matrix can in particular comprise a polymer, which is selected from a group of polymers that consist of fluoroplastics, polyaryletherketones, sulphur-containing polymers and high heat resistant polymers. The zeolite comprises in particular a zeolite of type A, in particular a zeolite 4A or 3A.

Abstract: A composite material includes a polymer matrix and silica gel, which is bound in the polymer matrix. The volume fraction of the silica gel to the volume fraction of the composite material amounts to at least 50%, especially at least 65%. An electronic device, especially measuring device, includes at least one housing having at least one inner space, which contains an electronic circuit, wherein the device has at least one gas path, via which moisture can get into the housing, wherein the device has at least one formed body of the composite material.

Abstract: A method for determining a fraction of an adsorbed material contained in a formed body serving as an adsorber material. For the case in which the adsorber material is present in the form of a formed body, at least two electrodes are arranged, spaced apart from one another, on a surface of the formed body and/or are firmly inserted in the formed body; that, for the case, in which the adsorber material is present in the form of a powder or granulate, a corresponding formed body made of the same material is durably inserted in the powder or granular material. The electrodes are supplied with an alternating electrical current, whereby an electrical characteristic variable is ascertained; and, based on the characteristic variable, degree of saturation of the adsorber material is ascertained. Furthermore, a corresponding apparatus is claimed.

Abstract: A pressure measuring device, comprising: a pressure measuring cell having a measuring membrane, at least one platform and a pressure chamber formed therebetween. An electrical transducer for transducing a deflection of the measuring membrane into a pressure dependent, primary signal; a cylindrical housing having a measuring cell chamber, in which the pressure measuring cell is arranged, and an end face pressure receipt opening in communication with the pressure duct; and an electronic circuit in the housing for operating the electrical transducer, and for processing the primary signal, and for outputting a measurement signal. The cylinder axis of the pressure measuring cell forms with the cylinder axis of the housing an angle, which amounts to not less than 80°, and which is especially preferably a right angle.

Abstract: A capacitive pressure measuring cell, including a ceramic platform and a ceramic measuring membrane, which are connected pressure tightly along a joint to form a reference pressure chamber between them. The measuring membrane has a first electrode facing the platform, and the platform has at least a second electrode facing the measuring membrane. The capacitance between the first and second electrodes depends on the difference between a pressure externally acting on the measuring membrane and a pressure reigning in the reference pressure chamber, wherein the joint has a thickness d, which defines an equilibrium distance between the measuring membrane and the front side of the platform. On the front side of the platform, a support layer is arranged, which comprises an inorganic insulator, wherein the support layer has a thickness of at least 0.2, and wherein the second electrode is arranged on the support layer.

Abstract: A composite material includes a polymer matrix and silica gel, which is bound in the polymer matrix. The volume fraction of the silica gel to the volume fraction of the composite material amounts to at least 50%, especially at least 65%. An electronic device, especially measuring device, includes at least one housing having at least one inner space, which contains an electronic circuit, wherein the device has at least one gas path, via which moisture can get into the housing, wherein the device has at least one formed body of the composite material.