Automation technology field device

A field device of automation technology, having:

• at least one current converter;
• at least two connection terminals to which a two-wire line or a four-wire line can be connected, so that a loop current can be supplied to the field device via said at least two connection terminals;
• a computing device which is arranged to receive signals from said current converter and adapted to generate a set point of said loop current;
• a safety device that serves to ensure the electromagnetic compatibility and/or explosion safety of the field device, wherein:
• said safety device is connected to each of said at least two connection terminals via one line each;
• and
• said at least one current converter is arranged contactlessly around said one line, wherein said current converter reads back the loop current in at least one of two lines between said safety device or parts of said safety device and said connection terminals in a galvanically isolated manner and returns the read value to said computing unit via a read-out signal, wherein
• said computing device determines a control deviation from said set point of said loop current via said read-out signal from said at least one current converter.