Krohne S.a.s.

Olivier Dubray

Vincent Pichot

Samuel Grosdidier

Denis Lambert

Pierre Metral

Florian Chanal

Fabrice Marcel

A device for distance measurement includes a signal generator for generating a signal, a transmitting antenna for transmitting the signal, a receiving antenna for receiving a received signal, a first mixer, an evaluation unit, and a diagnostic unit having a diagnostic line. The first mixer mixes the signal and the received signal. The signal generator is connected to the diagnostic line and the signal is a diagnostic signal after passing through a delay element of the diagnostic line. The diagnostic signal is mixed with the signal in the first mixer or a second mixer to form a diagnostic mixed signal. The output of the first mixer, and the output of any second mixer, is or are connected to the evaluation unit, which uses the diagnostic mixed signal to check functionality of the signal generator and/or the evaluation algorithm.

Device for distance measurement and method for functionally checking a device for distance measurement

A system includes a field device and a control device. The field device includes a field device controller and a field device transmitter. The control device includes a control device controller and a control device transmitter. The field device transmitter and the control device transmitter have a transmission path between them. The field device controller and the control device controller are adapted for bidirectional transmission of messages between one another according to a communication protocol via the field device transmitter, the transmission path, and the control device transmitter. The communication protocol implements the transmission of messages with a master role and a slave role. The field device controller implements the master role and the control device controller implements the slave role. A related method is also disclosed.

System comprising a field device and a control device and method for operating such a system

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Chatuzange-Le-Goubet, France

Olivier Dubray