Abstract: An electronic device including electronics arranged in an electronics compartment and having electronic and/or electromechanical components. The device automatically detects and/or monitors wear of its electronic and/or electromechanical components and includes an apparatus for detecting and/or monitoring wear of the electronic and/or electromechanical components. Included is at least one element arranged in the electronics compartment. This element is independent of the electronics and has at least one physical property, which changes irreversibly as a function of wear of the element. The apparatus further includes a circuit for measuring the physical property, and an evaluating unit, which, based on the measured physical property, detects and/or monitors wear of the element and makes available a wear-dependent output signal.

Abstract: A method for ascertaining and monitoring the fill level of a medium in a container the method utilizes a fill-level measuring device, wherein, according to the technique of time-domain reflectometry, high-frequency measuring signals are guided via at least one measuring probe in the direction of the medium, reflected on at least one interface of the medium as wanted echo signals or on disturbance locations as disturbance echo signals, and received. A current echo curve is formed from a produced, reference echo signal, wanted echo signals and disturbance echo signals, wherein, at least from a first disturbance echo signal and the reference echo signal, which are caused in a measurement-inactive region of the fill-level measuring device, a base point is located in the current echo curve, and wherein the fill level is ascertained from the distance between the base point and the wanted echo signal formed in a measurement-active region of the fill-level measuring device.

Abstract: A method for checking proper functioning of a fill-level measuring device working according to the travel time principle. For this purpose, in predetermined or selectable time intervals (ta), a current measured value curve at a current fill level (hactual) is ascertained; on the basis of the current measured value curve, a current wanted echo signal is determined. Subsequently, on the basis of the current wanted echo signal, an expected value (E) for quality of a wanted echo signal at at least one predetermined fill level (hdesired) is ascertained. The ascertained expected value (E) for quality of the wanted echo signal at the predetermined fill level (hdesired) is compared with a predetermined critical value for quality, and an error condition is diagnosed, when the ascertained expected value falls below the critical value for quality.

Abstract: The invention relates to an apparatus for determining and/or monitoring the process-variable fill-level of a fill substance in a container. The apparatus of the invention is to satisfy high demands with respect to chemical resistance and/or cleanability, while permitting individual parts to be replaced. In accordance with the invention, a housing part (2) is provided, which is securable on the container. Furthermore, a conductive element (3) is provided, which, when mounted, extends into the container, and which is coupled with the housing part (2) by means of a disengageable connection (4). The disengageable connection (4) is located in the interior of the housing part (2).

Abstract: The invention relates to a measuring device which determines the filling level by means of high-frequency measuring signals which are guided along a waveguide. The invention is based on the object of optimizing the waveguide. According to a preferred embodiment of the apparatus according to the invention, the waveguide is a wire cable which comprises a plurality of individual wires of a predetermined diameter which are twisted together.

Abstract: In order systematically to register individual, or a combination of, adverse influences on, and in order to be able better to estimate, service life or ability of a measuring field-device to function, at least one relevant influencing variable, preferably, however, a plurality thereof, is/are evaluated. In such case, Oin addition to a measured value [[(24)]] for a process variable, further variables [[(25) and (26)]] are registered by corresponding sensors mounted on, or in, the measuring field-device and conditioned in analog format in suitable operating circuits, preparatory to registering them digitally with the same A/D-converter [[(21)]] that registers the measurement signal [[A]] for the process variable. Multiplexer [[(22)]] permits selection of the desired input signal, which is then processed further with the aid of a microprocessor [[(23)]]. Then, the combined effect of the different influencing variables is determined and a remaining, probable service life calculated.

Abstract: The invention relates to a measuring device which determines the filling level by means of high-frequency measuring signals which are guided along a waveguide. The invention is based on the object of optimizing the waveguide. According to a preferred embodiment of the apparatus according to the invention, the waveguide is a wire cable which comprises a plurality of individual wires of a predetermined diameter which are twisted together.

Abstract: A measuring device for determining the filling level of a product or the position of the interface between two media or phases in a container by means of high-frequency measuring signals which are guided along a waveguide. The waveguide comprises a wire cable with a plurality of individual wires of a predetermined diameter which are twisted together.

Abstract: The invention relates to an apparatus for monitoring a field device for determining and/or monitoring a physical and/or chemical process parameter of a process medium with a first sealing stage facing toward the process and at least one housing with a predetermined interior volume. The housing is located on the side of the first sealing stage facing away from the process, wherein energy is transferable through the first sealing stage 4 in the direction of the process medium. This energy interacts with the process medium, wherein at least one detector unit is provided in the housing, which unit monitors at least one condition parameter of the interior volume of the housing.

Abstract: An arrangement for fill level measurement is provided, with which accurate fill level measurement on a continuing basis is possible, including a container (3) containing a fill substance (1) whose fill level is to be measured, a fill level measuring device (5) arranged at the container (3) and operating according to the travel time principle, an apparatus (11, 13) for registering a filling and/or emptying of the container (3), an auxiliary unit (19), which by means of the filling and/or emptying registered by the apparatus (11, 13), determines an instantaneous change in fill level (VL) or an instantaneous change in material flow rate, and makes such available to the fill level measuring device (5) for determining the fill level (L) to be measured.

Abstract: The invention relates to a method and a device for determining the level of a filling (1) in a container (2). The aim of the invention is to provide a method and a device for measuring said level which are economical to carry out/produce and which offer an especially high degree of measuring accuracy.

Abstract: The invention concerns a device for determining and/or monitoring the fill level of a fill material in a container with a transmitting-/receiving-unit, which produces and receives high frequency measurement signals, and an evaluation/control-unit, which determines the fill level of the fill material in the container on the basis of the travel time of the high frequency measurement signals. High frequency measurement signals are guided along a conductive element. The coupling onto, and from, element is done by a coupling unit. The device is secured at the container using an attachment part placed above the maximum fill level to be measured and/or monitored in the upper region of the conductive element, a horn-shaped element is arranged such that its lower opening area facing in the direction toward the surface of the fill material lies approximately in the plane of the attachment part.

Abstract: An arrangement for fill level measurement is provided, with which accurate fill level measurement on a continuing basis is possible, including a container (3) containing a fill substance (1) whose fill level is to be measured, a fill level measuring device (5) arranged at the container (3) and operating according to the travel time principle, an apparatus (11, 13) for registering a filling and/or emptying of the container (3), an auxiliary unit (19), which by means of the filling and/or emptying registered by the apparatus (11, 13), determines an instantaneous change in fill level (VL) or an instantaneous change in material flow rate, and makes such available to the fill level measuring device (5) for determining the fill level (L) to be measured.

Abstract: The invention relates to a device for determining and/or monitoring filling of a product or the position of the boundary surface between two media or phases in a container. The device comprises a signal generating unit that generates high-frequency measuring signals, an injection unit and a surface waveguide, wherein the measuring signals are injected into the surface waveguide by means of the injection unit and directed toward the filling product via the surface waveguide. The device also comprises a receiver/evaluation unit, which directly or indirectly determines filling of the product or the position of the boundary surface in the container during the running time of the measuring signals reflected on the surface or boundary surface of the filling product. The invention aims at providing a device which is configured in such a way that parasitic voltages are effectively diverted. This is achieved in that the surface waveguide is connected to a frame potential by means of a coupling.

Abstract: The invention relates to an apparatus for monitoring a field device for determining and/or monitoring a physical and/or chemical process parameter of a process medium with a first sealing stage facing toward the process and at least one housing with a predetermined interior volume. The housing is located on the side of the first sealing stage facing away from the process, wherein energy is transferable through the first sealing stage 4 in the direction of the process medium. This energy interacts with the process medium, wherein at least one detector unit is provided in the housing, which unit monitors at least one condition parameter of the interior volume of the housing.

Abstract: A level sensor which is capable of largely eliminating the influence of structural parts and/or the formation of deposits on the measuring accuracy and on the measuring sensitivity of the level sensor. There is provided, a launching unit which has at least one length, which essentially corresponds to the distance from the container wall to the lower edge of the structural part, and which is positioned in such a manner that a transition area launching unit conductive element is located approximately in the plane of the lower edge of the structural part, with the diameter of the opening of the launching unit on the transition launching unit conductive element is in the order of magnitude of the wavelength of the high-frequency measurement signals.

Abstract: The invention relates to a filling level measuring device which is used to measure the level of a filling material in a container. A probe is provided, which protrudes inside the container. The filling level measuring device can be mounted and dismounted without the probe needing to be moved in the container. The inventive device comprises a housing consisting of a first section, and a second section, the sections respectively comprising a central axial bore whereby the first section has an interior diameter which is smaller than that of the second section. A securing device is provided on the housing for securing the filling level measuring device onto the container. An insert is disposed in the housing in such a way so that it can pivot in relation to the housing, the insert being placed on a surface between the first and the second sections.

Abstract: The invention concerns a device for determining and/or monitoring the fill level of a fill material (2) in a container (3) with a transmitting-/receiving-unit (9, 10), which produces and receives high frequency measurement signals, and an evaluation-/control-unit (11), which determines the fill level of the fill material (2) in the container (3) on the basis of the travel time of the high frequency measurement signals. High frequency measurement signals are guided along a conductive element (6). The coupling onto, and from, element (6) is done by a coupling unit (8). The device is secured at the container using an attachment part (5) placed above the maximum fill level to be measured and/or monitored. In the upper region of the conductive element (6), a horn-shaped element (7) is arranged such that its lower opening area (15) facing in the direction toward the surface (4) of the fill material (2) lies approximately in the plane of the attachment part (5).

Abstract: The invention relates to a method and a device for determining the level of a filling (1) in a container (2). The aim of the invention is to provide a method and a device for measuring said level which are economical to carry out/produce and which offer an especially high degree of measuring accuracy.

Abstract: The invention relates to a device for determining and/or monitoring filling of a product or the position of the boundary surface between two media or phases in a container. Said device comprises a signal generating unit (2) that generates high-frequency measuring signals, an injection unit (3) and a surface waveguide (4), wherein the measuring signals are injected into the surface waveguide (4) by means of the injection unit (3) and directed toward the filling product via the surface waveguide (4). The device also comprises a receiver/evaluation unit (5, 6), which directly or indirectly determines filling of the product or the position of the boundary surface in the container during the running time of the measuring signals reflected on the surface or boundary surface of the filling product. The invention aims at providing a device which is configured in such a way that parasitic voltages are effectively diverted.