Patent ID: 9194718
Filing Date: 2015-11-24
Classification: G01D,G05B

Abstract:
1. A field device for process instrumentation, comprising: an analog output, to which a two-wire line for transmitting an analog output signal is connectable; a computation unit; a generation device configured to generate a first pulse-width-modulated digital signal corresponding to the analog output signal; a plurality of DC-isolation devices configured in parallel to communicate with the computation unit, a DC-isolation device of the plurality of DC-isolation devices being configured to receive the first pulse-width-modulated digital signal and output a second pulse-width-modulated digital signal corresponding to the first pulse-width-modulated digital signal; a first low-pass filter configured to generate the analog output signal from the second pulse-width-modulated digital signal; a first monitoring device configured to monitor the generation of the analog output signal, the first monitoring device comprising: