METHOD AND CIRCUIT FOR GRID SYNCHRONIZATION OF A MAGNETO INDUCTIVE FLOW MEASURING DEVICE
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United States of America Patent
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Oct 23, 2014
app pub date -
Nov 22, 2012
filing date -
Dec 6, 2011
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Abstract
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.
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