Abstract: A hydraulic pressure intermediary includes: a platform, which has a bowl-shaped surface having an annular, platform-surface edge region, a platform-surface central region depressed relative to the platform-surface edge region and surrounded by the platform-surface edge region, and an annular platform-surface transition region, which borders, on its inner side, the platform-surface central region and, on its outer side, the platform-surface edge region; a bowl-shaped, separating membrane having a flat, annular, separating-membrane edge region, a separating-membrane central region depressed relative to the separating-membrane edge region and an annular separating-membrane transition region, which borders, on its inner side, the separating-membrane central region and, on its outer side, the separating-membrane edge region. The separating membrane is connected with the platform-surface edge region within the separating-membrane edge region along a surrounding joint.

Abstract: A pressure difference transducer includes a hydraulic body, in which is formed an overload chamber containing an overload membrane. The overload chamber divides the overload chamber into a high-pressure chamber portion and a low-pressure chamber portion. The high-pressure chamber portion communicates with a first hydraulic path, which extends between a first diaphragm seal and a high-pressure side of a pressure measuring cell, and the low-pressure chamber portion communicates with a second hydraulic path, which extends between a second diaphragm seal and a low-pressure side of the pressure measuring cell. The low-pressure chamber portion has an essentially convex membrane bed, against which the overload membrane lies in a rest position.

Abstract: A pressure transmitter for registering the pressure of a medium. The pressure transmitter includes a transmitter body, a dividing membrane attached to the transmitter body forming thereby a pressure chamber, a first pressure canal and a second pressure canal. The two pressure canals exhibit different hydraulic properties.

Abstract: A measurement pickup is provided offering a high measure of safety and having a measurement pickup housing, a sensor element arranged in the measurement pickup, at least one connection element closing the measurement pickup housing, and an excess-pressure protection device, especially a burst disk or a pressure relief valve, integrated in the connection element, which serves to effect a pressure equalization with an environment of the measurement pickup in the case of a pressure overload in the measurement pickup.

Abstract: A measurement pickup is provided offering a high measure of safety and having a measurement pickup housing (1, 57), a sensor element (9, 61, 99) arranged in the measurement pickup, at least one connection element (5, 77, 101) closing the measurement pickup housing (1, 57), and an excess-pressure protection device (33, 103), especially a burst disk (37, 85) or a pressure relief valve, integrated in the connection element (5, 77) and serving to effect a pressure equalization with an environment of the measurement pickup in the case of a pressure overload in the measurement pickup.

Abstract: A differential pressure pickup with a small hysteresis volume which has a sensor element, two pressure measuring chambers adjacent thereto, two pressure receiving chambers closed off by separating diaphragms and two overload chambers separated from each other by an overload diaphragm, in which pickup the overload diaphragm has a closed outer edge and a closed inner edge and is firmly restrained along its outer edge and its inner edge.

Abstract: A differential pressure sensor, for determining the differential pressure between two measuring points, comprises a pressure vessel which is filled with a transfer fluid; a measuring cell which is arranged in the pressure vessel and is surrounded by the transfer fluid, with two half-cells; a diaphragm-like deforming body which separates the two half-cells from each other in a pressuretight manner; two pressure supply lines, which respectively feed the pressure from one of the two measuring points outside the pressure vessel to one of the two half-cells; and at least one pressure accumulator, the pressure of which acts on the transfer fluid in the vessel. Elastic or compressible bodies with a linear or degressive characteristic are suitable as the pressure accumulator. The pressure accumulator compensates for changes in volume of the transfer fluid on account of temperature fluctuations.