FIELD: measurement technology. SUBSTANCE: quantity of electric power A consumed by drive motor of pump having linear characteristic of consumed power dependence from feed N=f(Q) for time T is measured. Amount V of pumped water is determined from mathematical expression V = K1Ap-K2T, where 
are coordinates of two points taken on boundaries of pump operation zone, on its linear characteristic; η is electric motor efficiency. EFFECT: higher measurement results. 1 dwg
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