摘要:
Es ist ein Flansch-Satz für einen Differenzdruck-Messaufnehmer mit zwei auf einander gegenüberliegende, jeweils eine mit einem Druck zu beaufschlagende Membran (7) umfassende Außenseiten eines Messwerks (3) des Differenzdruck-Messaufnehmers montierbaren Seitenflanschen (1, 49, 57), sowie ein damit ausgestatteter Differenzdruck-Messaufnehmer beschrieben. Die Seitenflansche (1, 49, 57) umfassen jeweils eine Seitenwand (17), die im montierten Zustand eine der beiden Membranen (7) des Messwerks (3) überdeckt und unter sich eine an die jeweilige Membran (7) angrenzende Druckkammer (19) einschließt, und einen auf einer ersten Stirnseiten der Seitenwand (17) angeordneten ersten Prozessanschluss (27), der einen Druckkanal-Anschlussbereich (31) umfasst, in dem ein durch den Seitenflansch (1, 49, 57) hindurch zur Druckkammer (19) führender Druckkanal (33) mündet. Erfindungsgemäß sind die ersten Prozessanschlüsse (27) derart ausgebildet, dass ein mit dem Flansch-Satz ausgestatteten Differenzdruck-Messaufnehmer über diese ohne Zwischenfügung eines Adapters auf einen Prozessanschluss (37) montierbar und anschließbar ist, der eine für den Anschluss und die Montage von Differenzdruck-Messaufnehmern mit Messwerken mit in einer Ebene nebeneinander angeordneten Membranen ausgelegte erste Prozessanschlussgeometrie aufweist.
摘要:
A differential pressure sensor (101) comprises a measuring diaphragm (110) made of an electrically conductive material; two electrically insulating mating bodies (120, 130); and at least one capacitive transducer, wherein the measuring diaphragm (110) is connected to the mating bodies (120, 130) in a pressure-tight manner with the formation of a measuring chamber in each case along a circumferential edge, wherein the mating bodies each have a diaphragm bed which is concave in the centre, wherein the mating bodies each have a pressure channel (125, 135) which extends through the mating body into the measuring chamber, wherein the capacitive transducer has at least one mating body electrode which is formed by a metal coating of the surface of the mating body in the region of the diaphragm bed (124, 134) and with which contact can be made by a metal coating of the wall of the pressure channel, wherein the mating body electrode is formed by an inner region (127, 137) of the metal coating, which inner region is annularly enclosed by an outer region (126, 136) of the coating and is separated from the latter by an annular insulation region (129, 139).
摘要:
The invention relates to a differential pressure sensor (1) comprising a differential pressure measuring cell (2) with a measuring membrane (10), two counter elements (20, 30), between which the measuring membrane is arranged, and a converter (40) and comprising an elastic clamping device (50) that has two clamping surfaces (53), each of which acts on a counter element (20, 30) rear face (26, 36) facing away from the measuring membrane (10). The clamping device (50) has at least one elastic element (56, 58) via which the clamping surfaces (52, 54) are mechanically coupled in order to clamp the differential pressure measuring cell (2) by means of an axial clamping force. The clamping surfaces (52, 54) are dimensionally stable, and the clamping device (50) has a bracket with two clamping elements (60, 62), each of which has one of the clamping surfaces (52, 54). At least one of the clamping elements has an elastic element, and the clamping elements are connected to each other under tension in order to exert a clamping force onto the differential pressure measuring cell (2). The two clamping elements (60, 62) have a central dimensionally stable section (64, 66) which comprises the clamping surfaces (52, 54). Elastic sections adjoin the dimensionally stable section (64, 66) of at least one clamping element, in particular of both clamping elements, said elastic sections forming the elastic elements (56, 58).
摘要:
The invention relates to a MEMS sensor for metrologically sensing a measurement variable having improved resistance to overloading, which MEMS sensor comprises a plurality of layers (1, 3, 5), in particular silicon layers, arranged one on the other, the layers (1, 3, 5) of which MEMS sensor comprise at least one inner layer (5), which is arranged between a first layer (1) and a second layer (3), and in the inner layer (5) of which MEMS sensor at least one cut-out (7) extending through the inner layer (5) perpendicularly to the plane of the inner layer (5) is provided, which cut-out is adjoined on the outside at least in some segments by a region of the inner layer (5) forming a connecting element (9), which region is connected to the first layer (1) and the second layer (3), the MEMS sensor being distinguished in that a lateral surface (11) of the connecting element (9) bounding the cut-out (7) on the outside at least in some segments has, in an end region facing the first layer (1), a rounded shape that reduces the cross-sectional area of the cut-out (7) in the direction of the first layer (1) and, in an end region facing the second layer (3), a rounded shape that reduces the cross-sectional area of the cut-out (7) in the direction of the second layer (3).
摘要:
The invention relates to a component arrangement (1) comprising a first component (10) which has a first joining surface (11) and a second component (20) which has a second joining surface (21). The first joining surface (11) is connected to the second joining surface (21) using an integrated reactive material system (30). The integrated reactive material system comprises at least one coating of at least one of the joining surfaces (11), and the integrated material system comprises an activation region (33) on one surface. The activation region (33) is arranged outside of first or second joining surface regions which are joined together and adjoins the regions which are joined together.
摘要:
The invention relates to a hydraulic measuring unit for recording differential pressures, comprising a measuring unit body (10) with a process connection surface (16) and two pressure input openings, in each of which a pressure tube (20, 22) is arranged, which protrudes at the rear side from the measuring unit body (10) and supports a differential pressure measuring cell (40), wherein the pressure tubes (20, 22) are connected pressure-tightly to the measuring unit body (10) from the side of the process connection surface (16).
摘要:
A differential pressure sensor which is of simple design and can be produced cost-effectively is described, comprising a first and a second counterelectrode (1, 3), a conductive plate (5) arranged between the two counterelectrodes (1, 3), a first insulating layer (7), via which an outer edge of the plate (5) is connected to an outer edge of the first counterelectrode (1) to form a first pressure chamber (9), a second insulating layer (11), via which an outer edge of the plate (5) is connected to an outer edge of the second counterelectrode (3) to form a second pressure chamber (9), a cutout (13) which is provided in the first counterelectrode (1) and via which a first pressure (p 1 ) can be applied to the first pressure chamber (9), and a cutout (13) which is provided in the second counterelectrode (3) and via which a second pressure (p 2 ) can be applied to the second pressure chamber (9), which sensor is distinguished by the fact that the plate (5) is subdivided by a trench (17) into an inner region (19) serving as electrode and an outer region (21) electrically insulated therefrom by the trench (17), the inner region (19) comprises a measuring membrane (15) arranged between the two pressure chambers (9) and an edge region (23) enclosing the measuring membrane (15) and clamped in between the inner edges (25) of the insulating layers (7, 11), and the inner region (19) forms with each of the counterelectrodes (1, 3) in each case a capacitor having a capacitance (C1, C3) dependent on a differential pressure (Δρ) acting on the measuring membrane (15).
摘要:
The invention relates to a differential pressure sensor comprising a differential pressure measuring cell (10) having a measuring cell body with measuring chambers (13, 15) in the interior thereof to which pressure can be applied, a first installation surface (17) and a second installation surface (19), wherein the installation surfaces (17, 19) have a variable distance from one another under the application of pressure to the measuring chambers (13, 15). The differential pressure sensor further comprises a first stiffening body (20) with a first planar stiffening surface and a second stiffening body (20) with a second planar stiffening surface. Bending of the installation surfaces due to the application of pressure to the measuring chambers is reduced by the stiffening bodies, and more particularly, at least 50% of an effective rigidity K= 1/(dx/dp) of the stiffening bodies, which are connected by the differential pressure measuring cell, is provided only due to this connection of the stiffening bodies to the measuring cell body without additional connections between the stiffening bodies in a shunt, where x is the distance between the first installation surface and the second insulation surface which has the greatest pressure dependency dx/dp.
摘要:
The invention relates to a pressure sensor (1) comprising a substrate (2) having a formed measuring membrane (3) and an electrically conductive cover layer (4) which comprises electrical contact elements (5, 6, 7, 8) and which is electrically insulated in relation to the substrate (2) by means of an insulating layer (9). The cover layer (4) is structured such that in two regions (10, 11), that are electrically insulated from one another, two independent measurements of the respective resistance between two contact elements (5, 6, 7, 8) are possible. The regions (10, 11) of the cover layer (4) serve for shielding the sensor elements (12, 13) of the measuring membrane (3) from electromagnetic influences from the outside, for detecting damage to the measuring membrane (3) as well as for the exact temperature determination.