Abstract: An apparatus for determining and/or monitoring a physical and/or chemical, measured variable of a medium, including a housing, especially an elongated housing, and a sensor arranged in the housing. The sensor serves for registering the measured variable, wherein the housing has at least one opening, through which the sensor comes in contact with the medium. The housing has a first housing section, in which the sensor and a sensor electronics are arranged. The sensor electronics is arranged on a first carrier element. The sensor electronics serves for changing the measured variable into an analog electrical signal. An insert is applied in the first housing section, in which the sensor electronics is arranged. The insert is tubular.

Abstract: An apparatus for determining and/or monitoring a physical and/or chemical, measured variable of a medium, including a housing, especially an elongated housing, and a sensor arranged in the housing. The sensor serves for registering the measured variable, wherein the housing has at least one opening, through which the sensor comes in contact with the medium. The housing has a first housing section, in which the sensor and a sensor electronics are arranged. The sensor electronics is arranged on a first carrier element. The sensor electronics serves for changing the measured variable into an analog electrical signal. An insert is applied in the first housing section, in which the sensor electronics is arranged. The insert is tubular.

Abstract: A pressure sensor including: A pressure measuring cell having an end face loadable with the medium; a housing having a media opening and a ring-shaped, axial bearing surface, which surrounds the media opening; a clamping apparatus; and a ring-shaped sealing arrangement. The pressure measuring cell is positioned in the housing and the sealing arrangement is positioned between the bearing surface and the end face, and the sealing arrangement, as well as the pressure measuring cell, are axially clamped between the bearing surface and the clamping apparatus. The sealing arrangement includes, a decoupling ring, as well as a first and a second, ring-shaped sealing element. The first sealing element lies against the end face, the second sealing element lies against the bearing surface, and the decoupling ring is axially clamped between the first and the second sealing elements.

Abstract: The invention relates to a pressure measuring cell comprising a base body, a membrane that is connected to the base body, thus forming a measuring chamber. During operation, the membrane is subjected to a deflection which is dependent on a pressure that is to be measured. The cell also comprises a membrane bed, formed by a surface of the base body that faces the membrane, at least one electrode being mounted on said bed. Said electrode, together with a counter-electrode that is mounted on the membrane, forms a capacitor, whose capacitance represents a measurement for the deflection of the membrane. The measuring cell is characterized in that the electrode is electrically connected through the base body and that the measuring chamber has a smooth surface in the contact zone, said surface having a contact pin that is guided in a bore through the base body.

Abstract: A pressure sensor including: A pressure measuring cell having an end face loadable with the medium; a housing having a media opening and a ring-shaped, axial bearing surface, which surrounds the media opening; a clamping apparatus; and a ring-shaped sealing arrangement. The pressure measuring cell is positioned in the housing and the sealing arrangement is positioned between the bearing surface and the end face, and the sealing arrangement, as well as the pressure measuring cell, are axially clamped between the bearing surface and the clamping apparatus. The sealing arrangement includes, a decoupling ring, as well as a first and a second, ring-shaped sealing element. The first sealing element lies against the end face, the second sealing element lies against the bearing surface, and the decoupling ring is axially clamped between the first and the second sealing elements.

Abstract: A pressure sensor for measuring a pressure difference between a pressure being measured and the ambient atmospheric pressure surrounding the pressure sensor, including a platform and a membrane loadable with a pressure being measured. The membrane is secured at its edge to the platform, with a pressure chamber thus being formed between the platform and the measuring membrane. The pressure chamber communicates over a reference air path with the atmosphere, with the reference air path being a winding path.

Abstract: The invention relates to a pressure measuring arrangement comprising a pressure measuring cell which is fed by a pressure corresponding to the pressure which is to be measured by a pressure tube filled by a pressurised liquid; at least one pressure recording unit is arranged separately from said cell, said unit being impinged upon by a pressure which is to be measured during operation, producing a pressure corresponding to the pressure which is to be measured via a pressure line filled by a liquid; a connection between the pressure tube and the pressure line. A modular design and a large amount of flexibility is obtained in respect of the spatial arrangement of the pressure measuring cell and the pressure recording unit. The connection consists of a base body wherein at least one end section of the pressure line is arranged, in addition to a pressure screw through which the pressure tube passes and is secured by a fixing element arranged on a side which is oriented towards the base body of the pressure screw.

Abstract: A pressure sensor that is particularly suitable inter alia for the food industry and the measuring accuracy of which is stable over a long time, having a diaphragm seal (3, 45) with a separating diaphragm (7, 53) on which a pressure (P) to be measured acts and having a ceramic measuring cell (9, 57) which is connected to the diaphragm seal (3, 45) exclusively by inorganic materials, is provided, in which sensor the separating diaphragm (7, 53) and all further sensor components coming into contact during measurement with a medium of which the pressure (P) is to be measured are metallic.

Abstract: A pressure sensor that is particularly suitable for the food industry and the measuring accuracy of which is stable over a long time, having a diaphragm seal with a separating diaphragm on which a pressure to be measured acts and having a ceramic measuring cell which is connected to the diaphragm seal exclusively by inorganic materials, is provided, in which sensor the separating diaphragm and all further sensor components coming into contact during measurement with a medium of which the pressure is to be measured are metallic.

Abstract: A pressure sensor element for mounting in a connecting element comprises an isolator body with a laterally projecting membrane. The laterally projecting membrane covering an opening of a passage through which the pressure present at the surface of the membrane is conveyed to a pressure transducer element by means of a hydraulic fluid. In order to mount the pressure sensor element, it is secured in a mounting aperture of the connecting element. The projecting perimeter of the membrane is secured to the surface surrounding the mounting aperture of the connecting element by means of a continuous seam. A membrane type ring in combination with a conventional membrane may be substituted for the projecting membrane, wherein the membrane type ring covers the gap between the pressure sensor element and the adapter element.

Abstract: A pressure measuring device with a housing (21, 53) and a pressure measuring cell is provided, the pressure measuring cell being protected from interference, in particular independently of its installation position in the housing (21, 53), and comprising: a housing (21, 53), a pressure measuring cell, which has at least one pressure-sensitive measuring diaphragm (3, 35, 37), on the outer side of which a pressure (P, P1, P2) acts during operation, which has a transducer for converting a pressure-dependent deflection of the measuring diaphragm (3, 35, 37) into an electrical measured variable and which has free outer circumferential surfaces, which are provided with an electrically conductive coating (31, 61), and an electronic circuit (13, 49) for converting the electrical measured variable into a measuring signal.

Abstract: A pressure sensor is provided having a housing, a process connection which is connected to the housing and serves to feed a medium whose pressure (p) is to be measured to a membrane which his arranged in the housing, said membrane, in operation, undergoing a deflection which depends on the pressure (p) which is to be measured, which pressure sensor can have a seal made of a chemically highly resistant material and in which the membrane can consist either of ceramic or metal, which pressure sensor has a seal which seals a gap found between the housing and the process connection and/or the membrane, bears directly against the gap and covers the gap, and which is clamped between the housing and the membrane, and which pressure sensor has a spring which is two-legged in cross section, whose first and second legs enclose an acute angle, whose first leg has a leg surface which faces away from the second leg, rests on a supporting surface and is connected fixedly to the latter, and whose second leg has a leg surface

Abstract: A pressure sensor has a measuring cell, a measuring cell mount and an electronic sensor system connected to the measuring cell. The pressure sensor is designed as a modular unit in which the electronic sensor system and its electric connections are protected against moisture and mechanical loads, in which the electronic sensor system is embedded in a protective cushion, and in which the protective cushion is surrounded by an encapsulation.

Abstract: A ceramic pressure measuring cell with a basic body (1, 3), a diaphragm (5) connected to the basic body (1, 3) to form a measuring chamber (7, 9), which during operation undergoes a deflection dependent on a pressure (p1-p2) to be measured and the deflection of which is registered by means of an electromechanical transducer and is made accessible for further evaluation and/or processing, and a bore (13, 17) which penetrates the basic body (1, 3) and into which a small pressure tube (15, 19) is soldered in a pressure-resistant and gastight manner, and via which a pressure (p1, p2) is introduced into the measuring chamber (7, 9), is provided, in which a volume inside the measuring cell and the small pressure tube is precisely known, since the mechanical stop (33, 35) fixes a depth of penetration of the small pressure tube (15, 19) into the basic body (1, 3).

Abstract: A relative-pressure sensor is provided which is protected against contaminants and/or moisture and manages without an oil filling, having a gas-filled measuring chamber (5), which is sealed with a pressure-sensitive measuring diaphragm (3), on the outside of which a pressure (P) to be measured acts during operation, a gas-filled compressible resilient bellows (17, 18), on which a reference pressure (R) acts from outside during operation, whose internal volume depends on the reference pressure (R), and which is connected to the measuring chamber (5) in order to adapt an internal pressure prevailing in the measuring chamber (5) to the reference pressure (R), and a transducer for converting a pressure-dependent deflection of the measuring diaphragm, (3) into an electric measured variable.

Abstract: The invention is concerned with a pressure sensor which avoids temperature hysteresis effects caused on account of heat-induced expansions as a result of stresses between a ceramic pressure-measuring cell and a metallic housing. The inventive pressure sensor (100) for determining the pressure of a process medium comprises a metallic housing (110), which is open to a process medium and has a continuous hole (111) for accommodating the ceramic pressure-measuring cell (120), the pressure-measuring cell (120) comprising a ceramic base body (122) and a ceramic diaphragm (121), which is fitted thereon and is exposed to the process medium, and also suitable means (124a, 124b, 130), which supply an electrical signal which can be picked off and corresponds to the process pressure acting on the diaphragm (121).

Abstract: An ultrasonic liquid atomizer includes a piezoelectric transducer element mechanically coupled to an amplitude transformer and further comprises an atomizing disk mounted at the free end of the amplitude transformer. The atomizing disk and the amplitude transformer are so mutually matched that the vibration system of atomizing disk and amplitude transformer evinces the same resonant frequency as the transducer element, preferably about 60 kHz. Furthermore, the cross-sectional transitions between the transducer element and the amplitude transformer on one hand and between the amplitude transformer and the atomizing disk on the other are designed to be low in notch-stresses. An ultrasonic liquid atomizer so designed evinces both good properties of vibrations and furthermore advantageous long service lives. It makes possible a high specific flow rate and avoids cavitation and therefore spatters.

Abstract: Apparatus for atomizing liquids which includes an ultrasonic excitation system, a bending resonator which oscillates at ultrasonic frequencies, and an amendment for the delivery of liquid into the velocity nodal region of the bending resonator. The bending resonator has at least one surface which is inclined with respect to the axis of the excitaton system. The bending resonator can be in the form of an elongated narrow strip having a plurality of parallel nodal lines. The length of the excitation system is approximately (2n+1) .lambda./4, wherein n is 0 or an integer.

Abstract: Apparatus for atomizing liquids which includes an ultrasonic excitation system, a bending resonator which oscillates at ultrasonic frequencies, and a device for the delivery of liquid into the velocity nodal region of the bending resonator. The bending resonator has at least one surface which is inclined with respect to the axis of the excitation system. The bending resonator can be in the form of an elongated narrow strip having a plurality of parallel nodal lines. The length of the excitation system is approximately (2n+1) .lambda./4, wherein n is 0 or an integer.