Abstract: A device has a sensor (1) for detecting a contamination in the form of metal particles in a fluid, and is at least partially encompassed by a partition wall (17). Partition wall (17) is at least partially penetrated via a receiving opening (55) by the sensor device (1) arranged in its functional position and comprising its sensor (25) detecting the metal particles. The sensor (1) can be removed from the partition wall (17) into an inoperative functional position, in particular for maintenance or replacement purposes. The sensor (1) interacts with a closing device (3) such that upon removal of the sensor (1) to its inoperative functional position, the closing device (3) closes the receiving opening (55). In the opposite direction, when the sensor (1) is brought into its functional position, this receiving opening (55) is released.

Abstract: A method and a device monitors the quality of gaseous media dispensed by a filling station, in particular hydrogen, by an infrared measuring system. The infrared measuring system is connected into the dispensing path of the respective gaseous medium extending from the filling station to a consumer, and measures the transmission of infrared radiation at different wavelengths and different pressures. From the transmission measurements, the concentration of contaminants, which influence the quality, is calculated. At least when predetrminable quality parameters are exceeded, this exceeding is indicated.

Abstract: A sensor device, particularly for maritime applications, includes a housing (1) with a pressure connection (7) leading to a pressure sensor (9) that transmits measurement data using a transmission device (17, 19), and with at least one closeable passage opening (31) for connecting the surroundings to at least parts (33) of the housing interior in which the pressure sensor (9) is arranged. The pressure sensor (9) is surrounded by an incompressible medium that is separated from the surroundings by an elastically-yielding, media-tight separating arrangement (49).

Abstract: An ultrasonic displacement measurement system for hydraulic accumulators (3) has a movable separating element (5) separating two media chambers (9, 11) from each other in a media-tight manner within a housing (7). One media chamber (9) holds a compressible fluid or an incompressible fluid. The other media chamber (11) holds a compressible working gas. The particular position of the movable separating element (5) within the housing (7) can be detected by an ultrasonic sensor (13) that performs the position detection of the separating element (5) on the side of the media chamber (11) having the compressible fluid. A method for ultrasonic displacement measurement uses that system.

Abstract: A fluid processing apparatus having a housing (2), which at least substantially seals a fluid chamber fluid chamber (18, 20) from the external environment. At least one sensor device (26, 40, 60) provides information regarding the state of the fluid located in the fluid chamber (18, 20), such as pressure, moisture level, temperature or viscosity and/or provides information regarding the motion of a separating element (16) that can be moved within the fluid chamber (18, 29). At least one component (40, 60) of the sensor device can be included as an interchangeable, modular component in a part (6) of the housing (2) such that the component (40, 60) has an inlet (42) to the fluid located in the fluid chamber (18, 20).

Abstract: A pneumatic valve, in particular a pneumatic proportional pressure control valve includes a valve housing (3), in which a piston valve element (5) is guided in a guide (7) under the effect of an actuating device (9) and of a restoring device (11). The restoring device exerts a spring force and acts on the valve element (5) counter to the applied magnetic force (FB) of the actuating device (9). The valve element controls a media flow between a first media connection (13) and a second media connection (15) on the valve housing (3). With the actuating device (9), the valve element (5) establishes a media-conducting connection (17) between the respective media connections (13, 15), while allowing for the forces prevailing, on the basis of the applied pressures multiplied by the respective pressure-active surfaces, the spring force, the flow forces and the magnetic force.

Abstract: An electromagnetic actuating apparatus, in particular a proportional magnet or switching magnet, includes a magnet armature (4) guided for axial movement in a pole tube (2). The pole tube is at least partially surrounded by a coil winding and is adjoined by a pole core (10) via a separating region (20) forming a magnetic decoupling. On energization of the coil winding (52), a magnetic force acts on the armature (4) to move the armature (4) in the direction of the pole core (10) within a travel area. At least one insert (28) of ferromagnetic material with a preset axial thickness is between the armature (4) and the pole core (10) to shorten, as desired, the axial length of the travel area.

Abstract: A system for exhaust gas treatment for internal combustion engines has a pump (1) for metered supply of a freezable substance, particularly a urea solution, to a supply device (23) introducing the substance into the exhaust gas flow. A compensation device (25) is provided as protection against damage to the system due to volume expansion when the substance freezes. The compensation device compensates for the volume expansion accompanying an increase of the fluid pressure when the substance freezes.

Abstract: A hydraulically drive train mount (1), in particular for a motor vehicle, includes a mount housing (2) in which an elastic mount body (3) is arranged in a partially movable manner. The elastic mount body at least partially encloses a first fluid chamber (4) and has a fluid-filled equalization chamber (6) sealed by a sealing element (5) that can be moved in the mount housing (2). A membrane (7) arranged in the mount housing (2) separates the first fluid chamber (4) from the equalization chamber (6). The pressure in the equalization chamber (6) can be adjusted by the sealing element (5) that is formed as an axially movable piston (8).

Abstract: A device (1) converts a force or a pressure into an electrical signal and has a first deformation element (10), in particular a first membrane (12), to apply the force or the pressure to the device (1) and a second deformation element (20), in particular a second membrane (22), to convert the deflection of the force or the pressure into an electrical signal. The first deformation element (10) has a first force transmitter (14), and the second deformation element (20) has a second force transmitter (24) for transmitting the force from the first deformation element (10) to the second deformation element (20). The first force transmitter (14) is rigidly connected at its end distant from the first deformation element (10) to the end of the second force transmitter (24) distant from the second deformation element (20). Both compressive forces and tensile force can be transmitted from the first deformation element (10) to the second deformation element (20) by the first and second force transmitters (14, 24).

Abstract: A system for damping the reflection wave at the open end (6) of a magnetostrictive sensor system has at least one magnet device (2) movable relative to a measuring wire (1) that can be deflected mechanically and that experiences a deflection under the influence of a current pulse (3). The deflection can then be processed by a signal device (5). The system has at least one damping part (8) lying against the measuring wire (1) by a sleeve-shaped enclosure (11). The sleeve-shaped enclosure (11) can be deformed from an expanded initial state intended for attaching the sleeve-shaped enclosure to the damping element (9), to a constricted functional state that exerts a clamping force on the damping element (9). The method is characterized in that the sleeve-shaped enclosure (11) is constricted to an increasing extend from the end (19) of the sleeve-shaped enclosure adjacent to the signal device (5) to the other end (19?) so that the tubular damping element (9) is likewise pressed into a conical contour.

Abstract: A measuring cell (1) for the infrared analysis of fluids, in particular a measuring cell (1) having a permissible operating pressure of more than 20 bar and preferably more than 50 bar, has a flow channel (10) for the fluid formed between first and second elements (2, 4). Each element is transparent to infrared radiation at least in some sections. The infrared radiation can be radiated into the flow channel (10) by the first element (2) and can exit the flow channel (10) by the second element (4). The two elements (2, 4) are connected to each other in a fluid-tight and mechanically high-strength manner by a connecting layer (6) arranged between them and made of a glass-containing material, in particular a sintered glass-ceramic material. A measuring system (8) has that measuring cell (1). A method produces that measuring cell (1).

Abstract: An actuating device, particularly for actuating valves that can be connected externally, includes a housing (10) and a coiled body (12) in the housing and having a coil winding (14). The winding encloses a pole tube (16) at least partially, having a pole core (20) connected at its free end. An armature (22) is guided in a longitudinally displaceable manner at least in the pole tube (16) within an armature chamber (24) and interacts with an actuating device (26) for actuating a valve part. The actuating part (26) is guided within the pole core (20) along an annular body (92), sealing the inside of the pole core (20) and the pole tube (16) relative to the surrounding area.

Abstract: An actuating device, particularly for actuating valves connected externally, includes a housing (10) and a coil body (12) arranged in the housing. The coil body has a coil winding (14) at least partially enclosing a coil tube (16), a pole core (20) connected at the coil tube free end, an armature (22) guided in a longitudinally displaceable manner at least in the pole tube (16) within an armature chamber (24) and interacting with an actuating part (26) for actuating the respective valve part. The pole tube (16) is designed as a receiving sleeve for the armature (22). The sleeve is fixed with its free end region to a fixed bearing point. The fixed bearing point is formed by two support parts (118, 124) of the pole core (20) that delimit a receiving gap between them, in which the free end region of the receiving sleeve is fixed in a clamped manner.

Abstract: An electromagnet, in particular a switching magnet, has a field winding (11) located on a coil former (7), and has a pole piece (23) forming a part of the magnetic return path. A pole core (17) and an axially movable magnetic piston (19) are provided within the coil former (7). The pole piece (23) forms an aperture opening (25) for the magnet piston (19) on the area opposite the pole core (17). The magnet piston (19) is borne for its movement in its guide in the pole core (17). The pole piece (23) has a flange part (27) at least partially engaged over the coil former (7) at its axial end, and has a bush part (29) which extends axially from it. Within the coil former (7), the pole piece forms a hollow cylinder engaged over a longitudinal section of the magnet piston (19). Between the inner wall of the hollow cylinder and the circumference of the magnet piston (19), a parasitic air gap (30) is formed.

Abstract: A safety apparatus for avoiding a possible fire risk in an operating magnet supplied with electric current has at least one coil former (14) arranged in a housing (76, 82). A coil winding (16) is fitted on the coil former and has an operating part (20, 36) at least partially guided in the coil former (14). At least parts of the operating magnet are equipped with active and/or passive safety mechanisms of the apparatus to effectively counteract the risk of fire. The safety mechanisms are no longer arranged remote from the actual event, for example in the form of a fuse in the electrical supply circuit, but rather are directly at the location of the event where the possible fire or scorching situation can directly occur.

Abstract: The invention relates to a drive system having at least one hydraulic actuator (2), which is supplied with pressure medium (4) by means of at least one pressure-medium pump (3) in a main circuit, the pressure-medium pump (3) being a rotational-speed-controlled pressure-medium pump that is driven by a motor (5) at a variable rotational speed and a controlled torque, said drive system being characterized in that leakage fluid (7) that escapes from a displacement chamber (6) of the pressure-medium pump (3) is discharged through a fluid-conducting connection (8) having at least one check valve (9, 16), and the at least one check valve (9, 16) is installed in the fluid-conducting connection (8) in such a way that the check valve prevents pressure medium from flowing back out of the main circuit into the displacement chamber (6) or another interior chamber of the pressure-medium pump (3) and feeds leakage fluid (7) into the main circuit of the drive system (1) when there is a slight excess pressure.

Abstract: A valve device for a hydraulic circuit (10) divides the incoming volume flow into at least two pre-determined partial flows for supplying hydraulic consumers (V1, V2) of the circuit (10) and has at least one pressure balance (16) and at least one orifice. Since the orifice is embodied as a variable orifice (32) controllable by a proportional magnet (34), the opening area of the orifice varies. A flow regulator is then realized and can switch the regulated volume flow and/or proportionally adjust the regulated volume flow in a defined manner.

Abstract: The invention relates to a system for damping the reflection wave at the open end (6) of a magnetostrictive sensor system, which has at least one magnet device (2), which can be moved relative to a measuring wire (1) that can be deflected mechanically and that experiences a deflection under the influence of a current pulse (3), which deflection can be processed by a signal device (5), wherein the system has at least one damping part (8) lying against the measuring wire (1) at the open end (6), said damping part having a tubular damping element (9), which can be clamped to the measuring wire (1) by means of a sleeve-like enclosure (11).

Abstract: An unlocking device for actuating a control device in the locked condition to release it. The unlocking device has an actuating magnet guided in a coil base and/or in housing elements (28) of the actuating magnet and has an actuating element that can be displaced and that releases, in an actuation position, an unlocking path for a control unit has a locking element (30). The locking element, when unlocked by the actuating element via the control unit, releases the trajectory for the control device to be actuated. The locking device (30) is guided in the housing element (28) of the actuating magnet and prevents the control device from being unintentionally locked again by maintaining it in the unlocked position by a blocking part (48). The unlocked position corresponds to a release of the control device.