| 摘要 |
A field device electronics with a sensor unit for process measurements, wherein the field device electronics is connected with the sensor unit over corresponding signal paths, and wherein the field device electronics receives analog measurement signals (S 1 ) of the sensor unit and produces analog drive signals (S 5 ) for the fundamental wave excitation of the sensor unit and transmits to the sensor unit. Present for producing the drive signal (S 5 ) are an analog/digital converter, a digital phase shifter and a digital/analog converter, wherein the analog measurement signals (S 1 ) are digitized by the analog/digital converter and forwarded to the a digital phase shifter, and wherein the output signal (S 4 ) of a phase shifter is converted by the digital/analog converter into the analog drive signal (S 5 ) for the sensor unit.
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