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Turbine flowmeters feature a simple structure, light weight, high precision, good repeatability, rapid response, and ease of installation, maintenance, and use. They are now widely used in industries such as petroleum, chemicals, metallurgy, water supply, and papermaking. Today, the technical specialist from our manufacturer will explain to users the effects that the viscosity of the medium being measured has on turbine flowmeters: 1. As viscosity increases, the starting discharge volume of the turbine flowmeter decreases, and at the same time, the lowest speed at which it can respond also drops. 2. As viscosity increases, the K value of the turbine flowmeter decreases, and its linearity also deteriorates. 3. Before entering the linear region of turbine response, the K value continues to increase, and it grows exponentially with the Reynolds number at the flow meter inlet. 4. For low-production wells with high viscosity of the produced fluid, it is advisable to use a turbine with a more sensitive acquisition system, so as to accurately capture signals at low rotation speeds (less than 0.01 r/s). 5. For turbine flowmeters used to measure fluids with different viscosities, a single calibration at high viscosity under different downstream Reynolds numbers is sufficient to approximately determine the relationship between the K value of the turbine flowmeter and the Reynolds number, thereby allowing the response curve of the turbine to fluids with varying viscosities to be determined. Flow metering is one of the components of metrological science and technology, and it is closely related to the national economy, national defense construction, and scientific research. Doing this work well plays an important role in ensuring product quality, improving production efficiency, and promoting the development of science and technology. Especially in today’s era of energy crises and an increasing degree of automation in industrial production, the significance and role of flow meters in the national economy have become even more evident.