Abstract: An automatic sampling apparatus for taking liquid samples for the qualitative or quantitative determination of at least one analyte contained in the sample liquid includes a sample line that can be fluidically connected to the sampling station, a pump device, at least one sample container that can be fluidically connected to the sample line, and an electronic control system. The electronic control system is configured to fluidically connect the sample line to the sample container such that a fluid flow path extending from the sampling station through the sample line into the sample container is formed. The electronic control system is further configured to transport, using the pump device, a definable volume of the sample liquid, in the form of a liquid sample, along the fluid flow path into the sample container. The sampling apparatus is configured for concentrating or extracting the analyte present in the liquid sample.

Abstract: A field device for monitoring and/or determining a process variable of a medium, wherein the process variable preferably is fill level, viscosity or density of the medium. The field device includes: an oscillatable unit; a driving/receiving unit, which excites the oscillatable unit to oscillate, or which receives the oscillations of the oscillatable unit, as the case may be; and a control/evaluation unit, which controls the oscillations of the oscillatable unit, or which evaluates the oscillations of the oscillatable unit, control/evaluation unit produces an accretion alarm, when the oscillation frequency (f) of the oscillations of the oscillatable unit falls below an adjustable limit value (G; GMinimum; GMaximum). The limit value (G; GMinimum; GMaximum) is determinable and/or calculable at least from measured and/or calculated dependencies of the oscillation frequency on process conditions and/or on the process variable to be monitored and/or determined.

Abstract: A device and a method for determining and/or monitoring a process variable of a medium. The device comprises a measuring unit which produces a first output signal, and a control/evaluation unit which further processes the first output signal of the measuring unit. A first task is assigned to the measuring unit; a second task is assigned to the control/evaluation unit; at least one, first task identification unit and at least one, second task identification unit are provided; a first coordination unit and a second co-ordination unit are provided, which are used to associate codings with the tasks; and a comparison unit is provided, with which the measuring unit and the control/evaluation unit are connected, and which compares the first coding with the second coding.

Abstract: A field device for monitoring and/or determining a process variable of a medium, wherein the process variable preferably is fill level, viscosity or density of the medium. The field device includes: an oscillatable unit; a driving/receiving unit, which excites the oscillatable unit to oscillate, or which receives the oscillations of the oscillatable unit, as the case may be; and a control/evaluation unit, which controls the oscillations of the oscillatable unit, or which evaluates the oscillations of the oscillatable unit. control/evaluation unit produces an accretion alarm, when the oscillation frequency (f) of the oscillations of the oscillatable unit falls below an adjustable limit value (G; GMinimum; GMaximum). The limit value (G; GMinimum; GMaximum) is determinable and/or calculable at least from measured and/or calculated dependencies of the oscillation frequency on process conditions and/or on the process variable to be monitored and/or determined.

Abstract: A device and a method for determining and/or monitoring a process variable of a medium. The device comprises a measuring unit which produces a first output signal, and a control/evaluation unit which further processes the first output signal of the measuring unit. A first task is assigned to the measuring unit; a second task is assigned to the control/evaluation unit; at least one, first task identification unit and at least one, second task identification unit are provided; a first coordination unit and a second co-ordination unit are provided, which are used to associate codings with the tasks; and a comparison unit is provided, with which the measuring unit and the control/evaluation unit are connected, and which compares the first coding with the second coding.

Abstract: The invention relates to a device for the determination or monitoring of a physical or chemical process parameter of a medium with a sensor, a first regulation/analytical unit and a second regulation/analytical unit, whereby each regulation/analytical unit comprises several components. According to the invention, at least one component of each of the first regulation/analytical unit and the second regulation/analytical unit has a redundant and diverse embodiment.

Abstract: An apparatus for determining and/or monitoring a physical or chemical process variable of a medium, having a sensor unit, which produces a measurement signal with a piece of process variable-dependent, basic information, and having an evaluation unit which, from the measurement signal of the sensor unit, determines a measured value for the process variable, and which produces an output signal with information concerning whether the measured value is greater or smaller than a limit value. A first and second modulation range are provided, and the evaluation unit modulates the output signal within the first or second modulation range with the basic information of the measurement signal, with the evaluation unit modulating the output signal within the first modulation range when the process variable is smaller than the limit value, and with the evaluation unit modulating the output signal within the second modulation range when the process variable is greater than the limit value.