Abstract: A system for automated treatment of fluids having interchangeable process modules (39, 40, 41, 42, 43), which are arranged next to each other, and which are respectively provided with a control unit and a fluid unit. The fluid unit is controlled by the control unit in order to carry out a module-specific process function during the treatment of the fluids. The control units are interconnected via a data bus (48), which is common to the process modules (39, 40, 41, 42, 43), and the fluid units are interconnected by a fluid bus (49) that has several channels. A fluid bus section is provided for at least one part of the channels inside each process module (e.g., 42). This section has fluid bus interfaces (52) at the ends thereof. A connection unit (51) is configured to be mounted between the respectively adjacent fluid bus interfaces (52) of two successive process modules (e.g., 41, 42) in at least two different mounting positions.

Abstract: A system for automated treatment of fluids having interchangeable process modules (39, 40, 41, 42, 43), which are arranged next to each other, and which are respectively provided with a control unit and a fluid unit. The fluid unit is controlled by the control unit in order to carry out a module-specific process function during the treatment of the fluids. The control units are interconnected via a data bus (48), which is common to the process modules (39, 40, 41, 42, 43), and the fluid units are interconnected by a fluid bus (49) that has several channels. A fluid bus section is provided for at least one part of the channels inside each process module (e.g., 42). This section has fluid bus interfaces (52) at the ends thereof. A connection unit (51) is configured to be mounted between the respectively adjacent fluid bus interfaces (52) of two successive process modules (e.g., 41, 42) in at least two different mounting positions.

Abstract: A positioner for a valve that is actuated by means of a drive. The positioner includes a locator (9) and a control unit (13). The locator (9) detects the actual position of an actuator (7). The control unit (13) compares the actual position with a predefined desired position, and generates an actuating signal. A magnet (18) having a magnetoresistive sensor, preferably a GMR sensor, is provided as the locator. The locator (9) is less susceptible to dirt and less prone to wear and tear than a conventional slide potentiometer. The positioner is thus less fault-prone.

Abstract: A device for measuring the specific density of a gaseous or liquid medium (8) having an acoustic transducer (1), which is active on both sides, and further having cylindrical delay paths (4, 5) as well as a ring (6) in which the acoustic transducer (1) is embedded. The diameter of the acoustic transducer (1) is selected such that it is smaller than the diameter of the delay paths (4, 5) so that diffracted waves generated in the area of the edge of the acoustic transducer generate fewer parasitic echoes and surface waves on the boundary surfaces (7, 9) resulting in less corruption of the measured result.

Abstract: The invention relates to a diagnostic system and method, especially for a valve (2) that can be actuated by a positioner (9) via a drive (6). The system utilizes a sensor (12) for recording structure-related sound and has a device (14) for evaluating a recorded measurement signal (13). A spectral region greater than 50 kHz is evaluated for conducting fault recognition. A fault indication signal is generated if the intensity of the measurement signal in this spectral region exceeds a defined threshold value. The sound caused by cavitation is primarily evaluated for conducting fault recognition.

Abstract: A positioner for a valve that is actuated by means of a drive. The positioner includes a locator (9) and a control unit (13). The locator (9) detects the actual position of an actuator (7). The control unit (13) compares the actual position with a predefined desired position, and generates an actuating signal. A magnet (18) having a magnetoresistive sensor, preferably a GMR sensor, is provided as the locator. The locator (9) is less susceptible to dirt and less prone to wear and tear than a conventional slide potentiometer. The positioner is thus less fault-prone.

Abstract: The invention relates to a diagnostic system and method, especially for a valve (2) that can be actuated by a positioner (9) via a drive (6). The system utilizes a sensor (12) for recording structure-related sound and has a device (14) for evaluating a recorded measurement signal (13). A spectral region greater than 50 kHz is evaluated for conducting fault recognition. A fault indication signal is generated if the intensity of the measurement signal in this spectral region exceeds a defined threshold value. The sound caused by cavitation is primarily evaluated for conducting fault recognition.

Abstract: A device for measuring the specific density of a gaseous or liquid medium (8) having an acoustic transducer (1), which is active on both sides, and further having cylindrical delay paths (4, 5) as well as a ring (6) in which the acoustic transducer (1) is embedded. The diameter of the acoustic transducer (1) is selected such that it is smaller than the diameter of the delay paths (4, 5) so that diffracted waves generated in the area of the edge of the acoustic transducer generate fewer parasitic echoes and surface waves on the boundary surfaces (7, 9) resulting in less corruption of the measured result.

Abstract: A plug connection for coupling the individual fibers of two optical fiber bundles or cables in which the cable ends are each provided with a connector having a guide member in which the fibers are supported in a longitudinally movable manner with fiber ends protruding therefrom with a coupling member adapted to mate with the connector having passages aligned with the longitudinal passages of the guide member for insertion of the respective fibers therein and wherein the distance which said fiber ends protrude from said connector guide member is greater that the length allotted to them in the coupling member whereby the fibers will abut against each other solidly and deform elastically into a space provided in each connector for that purpose.