Abstract: The invention relates to a method for determining the filling level of a medium in a container. A mixer that has at least one mixer blade and a mixer frequency (f<1>R</1>) is disposed in the container. Measuring signals are emitted at a predetermined measuring frequency (f<1>M</1>) towards the medium. The measuring signals reflected on the surface of the medium are received and evaluated by a run time method. The aim of the invention is to provide a device which allows for a reliable measurement of the filling level of a medium in a container provided with a mixer. To this end, the measuring frequency (f<1>M</1>) of the measuring signal having the mixer frequency (f<1>R</1>) of the mixer is synchronized (f<1>M</1>=n f<1>R</1>with n ? N) and that the measuring frequency (f<1>M</1>) is shifted by a defined phase (?) with respect to the mixer frequency (f<1>R</1>).

Abstract: A fill-level measuring device for measuring a fill level of a fill substance in a container, which, following a single commissioning, can be used in a plurality of applications. The fill-level measuring device includes: A measuring unit, which serves to produce a measurement signal dependent on the fill-level; a memory, in which parameter sets for different applications are stored; and an evaluating unit, which serves for selecting a parameter set, for deriving, on the basis of this parameter set, the fill level from the measurement signal, and for making such fill level available for further processing, evaluation and/or display.

Abstract: A fill level measuring device for measuring a fill level of a fill substance in a container and a method for fill level measurement using this fill level measuring device are provided. The fill level measuring device can perform fill level measurements upon re-start immediately on its own and reliably, and includes: at least one antenna, which issues transmitted signals (S) and receives echo signals (E); a signal processor, which serves for deriving from the received echo signals (E) an echo function containing the amplitudes (A) of the echo signals (E) as a function of travel time; a memory for storing data in a table whose columns serve for storing the echo functions in the columns in a sequence which corresponds to the fill levels associated with the individual echo functions; and an evaluation unit, which accesses the table for determining the fill level.

Abstract: A method for a fill level measurement in accordance with the running time principle, which functions dependably over a long period of time, is provided, having a fill level measuring device with an ultrasonic sensor for transmitting and receiving ultrasound, wherein a repeated check of a resonance frequency of the ultrasonic sensor is performed, in the course of which the ultrasonic sensor is briefly excited to oscillate, following the excitation a signal received by the ultrasonic sensor is picked up, and the actual resonance frequency of the ultrasonic sensor is determined by means of the received signal in that the received signal is digitized and supplied to a digital signal processor, a Fourier transformation of the digitized received signal is performed in the signal processor, a maximum of the Fourier-transformed received signal is determined as a function of the frequency, a frequency at which the maximum occurs is stored as the actual resonance frequency, and during measuring operations the ultrasoni

Abstract: The invention relates to a device for determining and/or monitoring a process variable. The aim of the invention is to provide a cost-effective, user-friendly device for determining and/or monitoring a process variable. The inventive device comprises the following elements: a sensor, a measuring/regulating/control unit which pre-defines at least one event to be determined or monitored, and at least one memory unit which stores data according to the at least one pre-defined event. The sensor, the measuring/regulating/control unit and the memory unit form a compact unit or an independent field appliance.

Abstract: The invention relates to a method for determining the filling level of a medium in a container. A mixer that has at least one mixer blade and a mixer frequency (f<1>R</1>) is disposed in the container. Measuring signals are emitted at a predetermined measuring frequency (f<1>M</1>) towards the medium. The measuring signals reflected on the surface of the medium are received and evaluated by a runtime method. The aim of the invention is to provide a device which allows for a reliable measurement of the filling level of a medium in a container provided with a mixer. To this end, the measuring frequency (f<1>M</1>) of the measuring signal having the mixer frequency (f<1>R</1>) of the mixer is synchronized (f<1>M</1>=n f<1>R</1> with n?N) and that the measuring frequency (f<1>M</1>) is shifted by a defined phase (?) with respect to the mixer frequency (f<1>R</1>).

Abstract: A method for a fill level measurement in accordance with the running time principle, which functions dependably over a long period of time, is provided, having a fill level measuring device with an ultrasonic sensor for transmitting and receiving ultrasound, wherein a repeated check of a resonance frequency of the ultrasonic sensor is performed, in the course of which the ultrasonic sensor is briefly excited to oscillate, following the excitation a signal received by the ultrasonic sensor is picked up, and the actual resonance frequency of the ultrasonic sensor is determined by means of the received signal in that the received signal is digitized and supplied to a digital signal processor, a Fourier transformation of the digitized received signal is performed in the signal processor, a maximum of the Fourier-transformed received signal is determined as a function of the frequency, a frequency at which the maximum occurs is stored as the actual resonance frequency, and during measuring operations the ultrasoni

Abstract: The invention relates to a method for determining the filling level of a medium in a container. A mixer that has at least one mixer blade and a mixer frequency (f<1>R</1>) is disposed in the container. Measuring signals are emitted at a predetermined measuring frequency (f<1>M</1>) towards the medium. The measuring signals reflected on the surface of the medium are received and evaluated by a runtime method. The aim of the invention is to provide a device which allows for a reliable measurement of the filling level of a medium in a container provided with a mixer. To this end, the measuring frequency (f<1>M</1>) of the measuring signal having the mixer frequency (f<1>R</1>) of the mixer is synchronized (f<1>M</1>=n f<1>R</1>with n ? N) and that the measuring frequency (f<1>M</1>) is shifted by a defined phase (?) with respect to the mixer frequency (f<1>R</1>).

Abstract: A fill level measuring device for measuring a fill level of a fill substance in a container and a method for fill level measurement using this fill level measuring device are provided. The fill level measuring device can perform fill level measurements upon re-start immediately on its own and reliably, and includes: at least one antenna, which issues transmitted signals (S) and receives echo signals (E); a signal processor, which serves for deriving from the received echo signals (E) an echo function containing the amplitudes (A) of the echo signals (E) as a function of travel time; a memory for storing data in a table whose columns serve for storing the echo functions in the columns in a sequence which corresponds to the fill levels associated with the individual echo functions; and an evaluation unit, which accesses the table for determining the fill level.

Abstract: A measuring instrument is provided, to which various ultrasonic sensors can be connected in a simple way. The measuring instrument has an electronic measuring instrument unit, to which various ultrasonic sensors can be connected, and having an apparatus for detecting the ultrasonic sensor 5 that is connected, which apparatus, for detecting the ultrasonic sensor, causes the ultrasonic sensor to oscillate, picks up its oscillation behavior, and from that derives a sensor-specific variable.

Abstract: The microwave measuring device, which preferably operates with microwave bursts, serves to produce a measured value (XH) representing the level of the contents of a vessel (200). It comprises a transceiver unit (2) for generating a level-dependent intermediate-frequency signal (ZF) by means of a transmit signal (S2) and a receive signal (E2), and a transducer element (1) which in operation couples waves (S2), particularly pulsed waves, into the vessel under control of the transmit signal (S2) and converts echo waves (E1) reflected from the contents (201) of the vessel into the receive signal (E2). The intermediate-frequency signal (ZF) is fed to a control unit (3) of the level measuring device where it is stored in the form of a sampling sequence (AF) in a volatile data memory (33). In this manner, both amplitude information and phase information is available for the level measurement. The device is thus capable of measuring level with high accuracy, particularly accurately to a millimeter, and very fast.

Abstract: The microwave measuring device, which preferably operates with microwave bursts, serves to produce a measured value (XH) representing the level of the contents of a vessel (200). It comprises a transceiver unit (2) for generating a level-dependent intermediate-frequency signal (ZF) by means of a transmit signal (S2) and a receive signal (E2), and a transducer element (1) which in operation couples waves (S1), particularly pulsed waves, into the vessel under control of the transmit signal (S2) and converts echo waves (E1) reflected from the contents (201) of the vessel into the receive signal (E2). The intermediate-frequency signal (ZF) is fed to a control unit (3) of the level measuring device where it is stored in the form of a sampling sequence (AF) in a volatile data memory (33). In this manner, both amplitude information and phase information is available for the level measurement. The device is thus capable of measuring level with high accuracy, particularly accurately to a millimeter, and very fast.

Abstract: The invention relates to a device for determining and/or monitoring a process variable. The aim of the invention is to provide a cost-effective, user-friendly device for determining and/or monitoring a process variable. The inventive device comprises the following elements: a sensor, a measuring/regulating/control unit (3) which pre-defines at least one event to be determined or monitored, and at least one memory unit (4; 5) which stores data according to the at least one pre-defined event. The sensor, the measuring/regulating/control unit (3) and the memory unit (4; 5) form a compact unit or an independent field appliance.

Abstract: A method of measuring level in a vessel by means of a level measuring device operating with pulses is disclosed. Based on waves being transmitted into the vessel and reflected from the contents of the vessel a digital sampling sequence, representative of the amplitudes of the waves, is generated and a transit time difference, representative of the measuring level, is determined. For determining the difference, a first data tuple, representative of a reference point in the envelope signal and a second data tuple, representative of an echo pulse in the envelope signal, are derived from the sampling sequence, each of the data tuple having an amplitude value and a time value.

Abstract: The invention relates to a method for determining the filling level of a medium (3) in a container (2). A mixer (5) that has at least one mixer blade (6) and a mixer frequency (f<1>R</1>) is disposed in the container. Measuring signals are emitted at a predetermined measuring frequency (f<1>M</1>) towards the medium (3). The measuring signals reflected on the surface (4) of the medium (3) are received and evaluated by a runtime method. The aim of the invention is to provide a device which allows for a reliable measurement of the filling level of a medium (3) in a container (2) provided with a mixer (5).

Abstract: The invention relates to an optoelectronic communication system having a data source (1) and a data sink (2), a transmitting unit (3) and a receiving unit (4) being present for data transmission from the data source (1) to the data sink (2). According to the invention it is proposed that the transmitting unit (3) and the receiving unit (4) are respectively structured as part of the data sink (2), a controllable modulation unit (5) being arranged in the data source (1), and the controllable modulation unit (5) altering the transmitted signal (6.1) of the transmitting unit (3) such that the signal (6.2) reflected from the modulation unit (5) to the receiving unit (4) includes the data information of the data source (1).

Abstract: The microwave measuring device, which preferably operates with microwave bursts, serves to produce a measured value (XH) representing the level of the contents of a vessel (200). It comprises a transceiver unit (2) for generating a level-dependent intermediate-frequency signal (ZF) by means of a transmit signal (S2) and a receive signal (E2), and a transducer element (1) which in operation couples waves (S1), particularly pulsed waves, into the vessel under control of the transmit signal (S2) and converts echo waves (E1) reflected from the contents (201) of the vessel into the receive signal (E2). The intermediate-frequency signal (ZF) is fed to a control unit (3) of the level measuring device where it is stored in the form of a sampling sequence (AF) in a volatile data memory (33). In this manner, both amplitude information and phase information is available for the level measurement. The device is thus capable of measuring level with high accuracy, particularly accurately to a millimeter, and very fast.

Abstract: A method of measuring level in a vessel by means of a level measuring device operating with pulses is disclosed. Based on waves being transmitted into the vessel and reflected from the contents of the vessel a digital sampling sequence, representative of the amplitudes of said waves, is generated and a transit time difference, representative of said measuring level, is determined. For determining said difference a first data tuple, representative of a reference point in said envelope signal and a second data tuple, representative of an echo pulse in said envelope signal, are derived from the sampling sequence, each of said data tupel having an amplitude value and a time value.

Abstract: The invention relates to a method for the highly accurate determination of the filling level (q) of a product (4) in a container (2), measuring signals being transmitted in the direction of the surface (5) of the filled product (4) and reflected at the surface (5) as echo signals and the filling level (q) in the container (2) being determined by evaluation of the amplitude values (A) and phase values (&psgr;) of the reflected echo signals by means of a pulse delay-time method. Furthermore, an apparatus suitable for carrying out the method is proposed. The invention is based on the object of proposing a method and an apparatus which permit highly accurate filling level measurements in containers (2), even if multipath propagation or multimode propagation occurs.