FIELD: oil producing industry. SUBSTANCE: device has hydrocyclone separator, separating and measuring calibrated vessels connected to gas, line, intake and discharge fluid lines combined into outlet common header; temperature-sensitive elements, pressure pickups, upper and lower levels gages of fluid; and microprocessor. Installed on gas line between separating and measuring calibrated vessels and before outlet common header are gas flow governors. Installed on fluid line between separating and measuring calibrated vessels are shutoff and three-way valves. In addition, measuring calibrated vessel has intermediate level gage and liquidometer transmitting measurement results to microprocessor. Gas flowmeter is installed on gas line. Lower level gage serves simultaneously as hydrostatic pressure pickup. Three-way and shutoff valves are controlled by hydraulic distributors and hydraulic drive. EFFECT: extended range of measurement of fluid production rate, higher accuracy and reliability of measurement. 1 dwg
