Abstract: A frequency converter for a filling level radar includes a signal generator unit, a receiver circuit, a transmit coupler, and an amplifier. The amplifier is amplifying the transmit signal at the high frequency side of the frequency converter. For frequency conversion, a mixer or a multiplier may be provided.

Abstract: The invention relates to a level meter with a waveguide for guiding an electromagnetic wave, such that the waveguide is designed as a hollow conductor and has a forward terminal section; with a wave adapter of a dielectrical material, such that the wave adapter has an outer circumferential area and partially projects with this outer circumferential area into a hole in the terminal section of the waveguide and partially protrudes from this terminal section, and such that the wave adapter has dimensions that allow it to adapt the wave transition of a wave leaving or entering the terminal section of the waveguide; and with a metallic transitional material in an area between the wave adapter and the waveguide, such that the transitional material assumes the form of a metallized part that extends over an area greater than area of direct contact between the outer circumference of the wave adapter and the waveguide.

Abstract: A method for determining a distance between a radar sensor and a reflection surface of a material comprising the following steps. The radar sensor is energized via a two-wire control loop which allows for data communication and an internal energy store. An echo profile is generated and analyzed to calculate the distance. During generation of the echo profile, the generation process is interrupted at least once to recharge the energy store via the two-wire control loop.

Abstract: Described is a planar antenna with a process separation device for a fill level radar. The planar antenna including a plate-shaped temperature-resistant process separation device that is arranged between the planar radiator element and the exterior of the antenna.

Abstract: The invention relates to a power supply device for energizing a modular measuring system. The measuring system comprises a modular display and adjustment unit and a modular low power sensor unit. Further, the power supply device is adapted to be disposed and connected electrically between the display and adjustment unit and the low power sensor unit, enabling for the modular display and adjustment unit and the low power sensor unit to be energized simultaneously, and enabling data communication between the display and adjustment unit and the low power sensor unit. Further, the invention is related to a modular system comprising a power supply device, a display and adjustment unit and a low power sensor unit. Finally, the invention relates to a sensor unit with internal energy store for energizing a display and adjustment unit connected thereto.

Abstract: The invention relates to a vibrating sensor with a diaphragm (2) that can be set into vibration; and with a transformer device (4) for setting the diaphragm (2) into vibration and/or for tapping a vibration S in the diaphragm; and with a vibrating body (3) and/or a diaphragm (2) in the form of a vibrating body, for transmitting the vibrations (S) of the diaphragm (2) to an ambient space (7) and/or for transmitting the vibrations (S) from an ambient space (7) to the diaphragm (2). The transformer device (4) exhibits a coil (8) and a bolt (6), such that the bolt (6) is connected to the diaphragm (2) in order to transmit the vibrations (S) to or from the diaphragm (2), and the coil (8) and the bolt (6) are positioned to so interact that a vibration (S) in the bolt (6) induces a flow of current in the coil (8) and/or a flow of current in the coil induces a magnetic field (B) and brings about a vibration in the bolt (6).

Abstract: A waveguide transition for a filling level radar is provided, which has a planar emitting element, which cooperates with two lines, such that circularly polarized electromagnetic transmitting signals can be coupled from the lines into a waveguide. With the thus-existing planar coupling, the necessity for an additional resonance chamber in the area of the coupling may be eliminated.

Abstract: Described is a wave guide adapter for a filling level radar. The adapter includes a decoupling member for reducing a leakage signal from a first line to a second line. The decoupling member is electrically isolated from the lines. Reducing the leakage signal increases the sensor's sensitivity at close range.

Abstract: Described is a method for detecting and/or for monitoring the level of a medium stored in a vessel and in particular to a method for diagnosing the functionality of the electromechanical oscillation unit of a vibration level gauge. An electromechanical transducer of the electromechanical oscillation unit of a vibration level gauge is supplied with an electric wave signal. The frequency of which is beyond the resonance frequency range of the electromechanical oscillation unit and is thus not adapted to actuate the oscillatory portion as for example an oscillating rod probe or tuning fork, so that the electric wave signal is converted into mechanical oscillations without actuating the oscillatory portion. Subsequently, the converted mechanical oscillations will be recorded using the at least one electromechanical transducer of the electromechanical oscillation unit, which reconverts the mechanical oscillations into an electric wave signal.

Abstract: For safety reasons the potential of an electrical supply line of a radar sensor should be separate from the potential of the filling level container. An arrangement for potential separation for a filling level radar includes a separation element for insulating the waveguide from the antenna. The separation element, corresponding to the cross section of the waveguide, is ring shaped. In this way rotatability between the sensor housing and the antenna subassembly is provided without influencing the signal line between the antenna and the waveguide.

Abstract: A level measuring instrument has a variable transmitting power for measuring a filling level in a tank. The level measuring instrument includes a generator unit selectively generating different transmitting powers. The generator unit is controlled so that the transmitting power is respectively adapted to the corresponding environmental conditions. For this purpose, the generator unit has for instance two different oscillators, which are driven selectively.

Abstract: A pulse running time filling level sensor includes a sampling device for sampling an IF signal at discrete instants and for converting the sampling values into digital sampling values, and a digital signal processing device for subsequent processing of the digital sampling values by calculating at least one new value characterizing the IF curve from respectively exactly two digital sampling values.

Abstract: A mounting bracket is adapted for mounting a field device, as well as to a field device that for the purpose of attachment to a mounting surface comprises such a mounting bracket. The mounting bracket comprises (a) a first bracket strap which includes a first rotary bearing, (b) a second bracket strap, spaced apart from the first bracket strap by a space, including a second rotary bearing and (c) at least one movable lock on one of the two bracket straps. The rotary bearings are designed to articulate on two opposing sides a field device that may be arranged in the space so that the field device may be rotated, on an imaginary axis that extends through the space, from a first angle position to a second angle position. The lock is designed to engage the field device in order to in this way resist a torque of the field device in that said lock converts the torque to a pair of forces which is removable by way of one of the rotary bearings and by way of the lock itself.

Abstract: The shape or amplitude of reference pulses in a filling level radar typically depend on the component quality of the circulator used, of a transmitting/receiving coupler, or else of the circuit temperature. In case of large echoes at close range, the quality of the measurement may deteriorate. A radar module for extracting a reference signal for a filling level radar comprises a tap extracting the reference signal and a delay line delaying the transmit signal. Delaying the transmit signal on its way to the antenna takes place after the extraction of the leakage pulse.

Abstract: Both in potential separation in the microwave path, and in potential separation directly between the two-wire loop and the output circuit, the quality of signal transmission may be negatively affected. A filling level radar device with potential separation within the electronics unit is stated, wherein potential separation does not separate analogue signals but instead separates digital signals or direct-current-free alternating signals. For example, the separation line leads through digital signal connections or alternating-voltage signal connections. As a result of this the expenditure for potential separation may be reduced and the transmission quality may be improved.

Abstract: This invention concerns a parabolic antenna with a parabolic reflector (2) having a parabolic reflector rim (20), a collar (9), which is positioned on the parabolic reflector (2), in particular on the parabolic reflector rim (20) and which has an outside collar rim (90), and having an exciter and/or a receiver (3), such that the exciter and/or receiver (3) are/is located in the axial direction (X) partly within the parabolic reflector rim (20) and partly outside thereof.

Abstract: A metallised plastic antenna includes a plastic antenna body with metallisation on the inside. In this arrangement metallisation is used for conducting electromagnetic waves. Furthermore, metallisation may be implemented as a protective coating so that chemical resistance of the plastic antenna may be ensured even in the case of corrosive environmental conditions.

Abstract: A circuit arrangement for transmitting data between a field unit and a control device with a first data interface for being coupled to the control device and a second data interface for being coupled to the field unit. A galvanic isolator is situated between the data interface on the side of the control device and the data interface on the side of the field unit, wherein the first data interface and the second data interface are coupled in a communicating fashion by the galvanic isolator. The circuit arrangement furthermore features at least one data storage device, wherein the data storage device is either coupled to the first data interface or the second data interface. The data storage device is designed in such a way that data of at least the first or the second data interface can be recorded on demand by the data storage device.

Abstract: Parameterisation, operational checking or data smayning are signifimayt operating steps in process automation. According to an exemplary embodiment of the present invention a field device for process automation is stated, which field device comprises a detector for detecting acoustic signals. Thus parameterisation, operational checking or data smayning in an acoustic way is provided. Data transmission does not necessitate any recesses, drill holes or windows in the housing of the field device.

Abstract: For safety reasons the potential of an electrical supply line of a radar sensor may be separated from the potential of the fill level container. A fill level radar with potential separation includes a separation element for insulating the aerial from a feed device. The separation element is arranged directly at the aerial, or forms part of the aerial. In this way insulation of the aerial from the exterior of the container is provided.