Abstract: Method for operating a measuring point having a base unit and a sensor unit, wherein the latter couples via a pluggable connector coupling with the base unit; the base unit serves for energy supply of the sensor unit, for data exchange with the sensor unit and for communication with a process monitoring installation, wherein the base unit includes: A first element of the pluggable connector coupling; a first microprocessor sensor data conditioning for communication with the process monitoring installation; a first data memory for saving measuring-point-specific data; wherein the sensor unit has a primary sensor and a sensor head; the primary sensor includes a transducer, which outputs a measured variable dependent signal; wherein the sensor head includes: A circuit for conditioning the transducer signals with an A/D converter and a second microprocessor for measurement signal processing, a second data memory for sensor data; a program memory which contains a firmware; and an interface with a second element of

Abstract: A cable circuit for connecting a sensor module to a measurement transmitter. The cable circuit includes a contactless interface for signal transmission between the cable circuit and the sensor module, wherein the sensor module is galvanically isolated from the cable circuit, and wherein signal transmission between the cable circuit and the sensor module occurs on an optical, inductive or capacitive path. Additionally, the cable circuit includes a signal processing unit, as well as a cable interface for connecting a cable, which connects the cable circuit with the measurement transmitter. The signal processing unit is integrated into the signal path.

Abstract: A sensor module includes a sensor element with a transducer for emitting an electric analog primary signal, which depends on a measured value; and a circuit assembly for conditioning the primary signal and for unidirectional data communication of a digital signal, which depends on the primary signal, to a superordinated unit.

Abstract: A measuring system for determining a value of a physical or chemical, measured variable of a medium, comprises: a base unit; at least one relay unit connected with the base unit and a sensor unit connected with the relay unit. The relay unit is especially embodied to receive from the base unit, and to forward to the sensor unit, data, especially measurement data, operating data, commands or software modules, and/or to receive from the sensor unit, and to forward to the base unit, data, especially measurement data, operating data, commands or software modules wherein the sensor unit comprises a circuit having at least one microcontroller, at least a first memory region, in which a basic software of the sensor unit is stored, and a second memory region, in which an upload software of the sensor unit is stored.

Abstract: Method for operating a measuring point having a base unit and a sensor unit, wherein the latter couples via a pluggable connector coupling with the base unit; the base unit serves for energy supply of the sensor unit, for data exchange with the sensor unit and for communication with a process monitoring installation, wherein the base unit includes: A first element of the pluggable connector coupling; a first microprocessor sensor data conditioning for communication with the process monitoring installation; a first data memory for saving measuring-point-specific data; wherein the sensor unit has a primary sensor and a sensor head; the primary sensor includes a transducer, which outputs a measured variable dependent signal; wherein the sensor head includes: A circuit for conditioning the transducer signals with an A/D converter and a second microprocessor for measurement signal processing, a second data memory for sensor data; a program memory which contains a firmware; and an interface with a second element of

Abstract: In a method and in an apparatus for transmission of energy and data, with a primary side, on which an amplifier is arranged, with a secondary side, on which a data source, e.g. a measuring sensor, is arranged, and with a plug-together assembly inductively coupling, galvanically completely isolated, the primary side and the secondary side, to minimize power losses and disturbing influences of fluctuating parameters, power from the plug-together assembly and from the amplifier, preferably a Class-E-amplifier, is controlled to a predeterminable, desired value. For this, a microcontroller taps the primary voltage on the primary winding and produces for the amplifier a controlled operating voltage as well as a controlled operating frequency, in order to keep the working point of the amplifier always in the optimal region.

Abstract: A cable circuit for connecting a sensor module to a measurement transmitter. The cable circuit includes a contactless interface for signal transmission between the cable circuit and the sensor module, wherein the sensor module is galvanically isolated from the cable circuit, and wherein signal transmission between the cable circuit and the sensor module occurs on an optical, inductive or capacitive path. Additionally, the cable circuit includes a signal processing unit, as well as a cable interface for connecting a cable, which connects the cable circuit with the measurement transmitter. The signal processing unit is integrated into the signal path.

Abstract: A system for process automation with a plurality of intelligent sensors, wherein each sensor serves for determining or monitoring a physical or chemical, process variable of a medium and each sensor has a primary side, plug connector element and a secondary side, plug connector element with a sensor element. Energy supply and data communication occurs between the two plug connector elements via a releasable plug-in connector coupling, wherein associated with each sensor is a Web service interface, via which the sensor is connectable to a wide area network (WAN) or to a local area network (LAN). A control unit or a server is provided, which provides at least one software for generating a virtual measurement transmitter, and wherein communication occurs between the virtual measurement transmitter and the sensors via the Web service interface.

Abstract: An apparatus for coding a signal by means of amplitude shift keying comprises a class E amplifier including a switching transistor, to whose gate is supplied a voltage having an operating frequency for operating the class E amplifier. For achieving an amplitude shift keying in the output signal of the class E amplifier, a circuit for switching the operating frequency of the voltage supplied to the gate of the switching transistor, or the resonance frequency of the class E amplifier, between a first value and a second value is provided and in order to switch a deviation degree between the operating frequency and the resonance frequency between a first value and a second value.