| 摘要 |
A method and apparatus is provided for calculating the flow rate through a pumping station that has at least one pump. For each pump and for each combination of pumps on oscillator circuit is provided of which the output frequency can be adjusted. The frequency of each such circuit is adjusted to represent the pump rate for the pump or combination of pumps to which that oscillator circuit corresponds. While operating the pumping station, a totalizing device has fed to it the output frequency of that oscillator circuit which corresponds to the pump or combination of pumps which is operating at any given time, and the total in the totalizer is incremented by a given amount for each pulse encountered. Thus, the totalizer is continuously updated.
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