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Hi, this is the Industrial Control Assistant. A little piece of knowledge every day – let’s improve and learn together! The flow rate and cumulative flow value of Emerson flowmeters are determined by a specially designed straight-plate twin-screw impeller; regardless of the position of the rotor during operation, the velocity and density of the fluid always remain parallel to the blades of the twin-screw flowmeter. As a result, the vortices at the bottom of the blades, which are designed appropriately based on the length of the rotor, are reduced. Viscosity has little effect on the twin-screw flowmeter. For flowmeters, the casing is made of stainless steel or carbon steel; graphite and cemented carbide are used for the shafts. For crude oils with high water and sand content as well as refined oils, cemented carbide bearings and shafts are employed. Double-helix flowmeters and scraper flowmeters are widely used in crude oil pipelines. Since volume is used as the basis for trade settlement abroad, volumetric flowmeters and twin-screw flowmeters are primarily employed for the trading of crude oil there. Emerson’s twin-screw flowmeter determines flow rate through conversion, making it an indirect measurement method. The double-helix flowmeter features a simple, compact, and lightweight structure, is easy to install and maintain, and has a high flow capacity. In the event of a failure, it does not affect the transport of liquid within the pipeline. Resistant to high pressure, suitable for measuring high-pressure fluids ； Corrosion-resistant: the dual-screw rotor is made of corrosion-resistant material (titanium alloy), enabling it to withstand corrosion from common corrosive media. In addition, it has low pressure loss and low energy consumption. Silicon carbide material is used between the rotor bearing and the shaft, which reduces wear and improves the accuracy of the instrument; the entire structure is made of titanium and shaped into a double-helix rotor, resulting in a streamlined design. It generates component forces, thus ensuring rotational stability and reducing the risk of wear; the structure is robust and does not deform, remaining unaffected by changes in pressure, viscosity, or temperature. These are the operating characteristics of Emerson flowmeters. We will continue to provide you with knowledge related to industrial control – feel free to stay tuned!