NYLD-WL series turbine flowmeter is a new generation of turbine flowmeter, which has been optimized and designed by absorbing the advanced technology of domestic and foreign flow instruments. It has simple structure, light weight, high accuracy, good reproducibility, and sensitive response. It is widely used to measure the corrosion of stainless steel 1CrisNisTi, 2Cr3, corundum Al3, and hard alloy in closed pipelines, and has no impurities such as fibers and particles. Its movement at working temperature is less than 5x10-6m ² S liquid, for the liquid with the degree of motion greater than 5x10-6m/s, the flowmeter can be used after the solid liquid calibration. If it is matched with display instruments with special functions, it can be used for quantitative control, quantity alarm, flow metering and energy saving.