DYLWGYB/Q/F turbine flowmeter is a new generation of turbine flowmeter with the characteristics of simple structure, light weight, high precision, good reproducibility, sensitive response, convenient installation, maintenance and use, etc., which is widely used to measure stainless steel 1Cr18Ni9Ti, 2Cr13, corundum A1203 and cemented carbide in closed pipelines without corrosion and impurities such as fibers and particles. For liquids with kinematic viscosity less than 5 * 10-m/s at working temperature, for liquids with kinematic viscosity greater than 5 * 10-m/s, the flowmeter can be used after solid-liquid calibration. If it is matched with a display instrument with special functions, it can also carry out quantitative control and excessive alarm lights, which is an ideal instrument for flow measurement and energy saving.