| 摘要 |
Circuit and method for grid synchronization of a magneto inductive flow measuring device having a measuring transducer and a power supply. A direct current signal for supplying the measuring transducer with power is transmitted from the power supply to the measuring transducer via two signal conductors, characterized by method steps as follows: producing at the power supply a differential synchronization signal for synchronizing the flow measurement with the grid frequency; transmitting the differential synchronization signal to the measuring transducer via the two signal conductors; separating at the measuring transducer the differential synchronization signal from the direct current signal; and processing the differential synchronization signal for synchronizing the flow measurement with the grid frequency. |
