Abstract: A position-measuring device for fluidic cylinder-and-piston arrangements having at least one Hall sensor, preferably arranged in the area of the cylinder wall, especially in a cylinder wall, and a magnetic region, arranged in the piston. At least one Hall sensor array has at least two Hall sensors spaced one from the other in the direction of movement of the piston. One coil is provided whose magnetic field permits the switching points of the Hall sensors to be adjusted in response to the coil current.

Abstract: A position-measuring device for fluidic cylinder-and-piston arrangements having at least one Hall sensor, preferably arranged in the area of the cylinder wall, especially in a cylinder wall, and a magnetic region, arranged in the piston. At least one Hall sensor array has at least two Hall sensors spaced one from the other in the direction of movement of the piston. One coil is provided whose magnetic field permits the switching points of the Hall sensors to be adjusted in response to the coil current.

Abstract: A safety valve for compressed air-operated consumers, including a valve housing having bores, and two direction control valves connected in parallel, each of the control valves having a working piston and a valve head connected to the piston. Two pilot control valves are operatively connected to the directional control valves so that each of the direction control valves is switchable by one of the pilot control valves. Each of the two valve heads is guided in a respective one of the bores in the valve housing. The housing has two cross-channels arranged to connect crosswise to each other. A first one of the pilot valves has a valve seat connected via a first pilot channel in the housing to one of the cross-channels which proceeds from the bore of one of the valve heads. A second of the pilot valves has a valve seat connected via a second pilot channel to another of the cross-channels which proceeds from the bore of another of the valve heads.

Abstract: A potted device, especially a potted, explosion-protected electromagnet comprising a coil (70), preferably embedded in a potting compound (12) in a housing (10), and a ferromagnetic circuit (60), which can be connected to external lines via contact elements (20) arranged inside the housing and likewise embedded in the potting compound (12), is characterized by the fact that the contact elements (20) are arranged in a cavity in such a way as to protrude beyond the potting compound (12) that closes the housing off at its end face, the cavity being formed by a cover element that can be mounted on the housing in the area of the contact elements (20), and that a wiring duct, which is connected with the cavity, is provided in the potting compound.