Correction circuit for meter - has multiplier circuits for measured value signals using analog frequency converters and filters

摘要

The correction circuit has analog signal multipliers, analog- frequency converters, and pulse counters. The measured value (X) provides a signal derived by a measured value converter (1) for inputs of analog multipliers (3,4). A second measured value converter derives a signal from the measured value (Y) for second input of the multipliers via a switch (9) during a switching cycle preset by a generator (14). The two output signals of the multipliers are smoothed in filters (5,6) and supplied to inputs of analog-frequency converters (7,8). The converter output pulse lines (19) are connected, via a second switch (11) in the generator cycle, to the inputs (27,24) of a counting stage (13) and to the inputs (23,28) of a divider stage (30). A reference signal is connected, via a third switch (10) in the generator cycle, to the points in front of the analog-frequency converters, such as the inputs of the two filters. The switching conditions control the operation of the electronically regulatedcounters.