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Turbine flowmeter is a new generation of turbine flowmeter that has absorbed the advanced technology of domestic and foreign flow meters and has been optimized and designed. It has the characteristics of simple structure, light weight, high precision, good reproducibility, sensitive response, easy installation, maintenance and use. It is widely used for measurement. The closed pipeline does not corrode with stainless steel 1Cr18Ni9Ti, 2Cr13, corundum AI2O3, cemented carbide, and has no impurities such as fibers, particles, and liquids with a kinematic viscosity less than 5×106m2/s at working temperature. For a liquid with a kinematic viscosity greater than 5×106m2/s s liquid can be used after the flowmeter is calibrated in real liquid. If it is matched with a display instrument with special functions, it can also perform quantitative control, over-quantity alarm, etc. It is an ideal instrument for flow measurement and energy saving