Abstract: An electropneumatic field device, such as an electropneumatic setting regulator or the like, incorporates a protective housing which has a housing cover and in which at least one electronic component and at least one pneumatic component are arranged. The protective housing is connected to at least one electric field input, at least one pneumatic supply inlet, and at least one pneumatic field outlet. The electric field input is connected to the electronic component, the pneumatic supply inlet and the pneumatic field outlet are coupled to the pneumatic component, the pneumatic component is connected to the electronic component for signaling purposes, and the protective housing has a ventilation device paired with the pneumatic component. The pneumatic component is at least partly surrounded by the housing cover which is releasably connected to the protective housing, and the ventilation device of the protective housing is integrated into the housing cover.

Abstract: The invention relates to an electric field device (10) with an ignition protection-type pressure-tight encapsulation for use in explosion-prone regions for controlling and/or regulating a valve unit of a process system, comprising a housing (12), in which a control unit (48) that comprises electronic components and is used as a monitoring, control, and/or regulating unit is arranged, said control unit (48) having a releasable communication connection to an operating unit (62). The housing (12) can be connected to a drive housing of the valve unit via a mechanical interface (42), and the housing has at least one connection feedthrough (44), via which at least one line can be connected that is connected to the control unit (48) via a connection interface (46).

Abstract: A position sensor for an actuator having a measuring shaft capable of pivoting less than, for example, 360° around a pivot axis. The position sensor can include an angle sensor to detect an actual angular position of the measuring shaft relative to a stationary reference point. The measuring shaft can include a first section extending coaxially to the pivot axis for introducing a pivotal movement to the measuring shaft corresponding to a control movement of an actuator rod, and a second section extending coaxially to the pivot axis to which a measuring shaft-based angle sub-sensor can be attached.

Abstract: A position sensor for an actuator having a measuring shaft capable of pivoting less than, for example, 360° around a pivot axis. The position sensor can include an angle sensor to detect an actual angular position of the measuring shaft relative to a stationary reference point. The measuring shaft can include a first section extending coaxially to the pivot axis for introducing a pivotal movement to the measuring shaft corresponding to a control movement of an actuator rod, and a second section extending coaxially to the pivot axis to which a measuring shaft-based angle sub-sensor can be attached.

Abstract: A differential pressure measuring device (10, 50) comprising a housing (18) having two pressure areas (20, 22) which are sealed relative to each other and are separated from each other by a membrane (12, 54). The membrane (12, 54) comprises a pressure plate (14) surrounded by an elastic circumferential area (16) allowing axial movement of the pressure plate (14). An indicator element (24, 56) is permanently connected to the pressure plate (14) and whose position can be evaluated in a non-contact manner by a sensor (34, 58). At least one pair of springs (28, 52) is provided, with one spring (30, 32) each of said pair of springs being located in an allocated pressure area (20, 22). Each spring (30, 32) of said pair of springs (28, 52) exerts an opposing spring force on the pressure plate (14).

Abstract: A differential pressure measuring device (10, 50) comprising a housing (18) having two pressure areas (20, 22) which are sealed relative to each other and are separated from each other by a membrane (12, 54). The membrane (12, 54) comprises a pressure plate (14) surrounded by an elastic circumferential area (16) allowing axial movement of the pressure plate (14). An indicator element (24, 56) is permanently connected to the pressure plate (14) and whose position can be evaluated in a non-contact manner by a sensor (34, 58). At least one pair of springs (28, 52) is provided, with one spring (30, 32) each of said pair of springs being located in an allocated pressure area (20, 22). Each spring (30, 32) of said pair of springs (28, 52) exerts an opposing spring force on the pressure plate (14).