Corrosion-resistant turbine flowmeters are selected by model code and technical specification to match aggressive liquids in chemical, pharmaceutical, and seawater systems. The model designation usually defines body material, rotor and bearing type, connection, output, and pressure rating. A typical model may combine a 316L or PTFE-lined body, tungsten carbide bearings, and a 4-20 mA or pulse transmitter. Key specifications include nominal diameter from DN4 to DN200, flow range, accuracy of +/-0.5% or +/-1.0%, repeatability of 0.1%, pressure up to 6.3 MPa, temperature from -20 to 120 C, and IP65 or IP67 protection. Wetted parts must suit the fluid; PTFE lining, Hastelloy, or titanium options improve resistance to acids, alkalis, and seawater. Installation requires straight pipe runs, filtration, and avoidance of cavitation. Outputs may include pulse, 4-20 mA, HART, or RS485. Calibration and material certificates support reliable custody transfer and process control. When ordering, specify medium, flow range, viscosity, pressure, temperature, connection standard, and output signal so the model code precisely matches the application. Regular inspection of the rotor and bearings helps maintain accuracy. For corrosive service, confirm sealing material, flange standard, and grounding requirements before installation. Optional displays, battery power, and explosion-proof housings are available for field or remote monitoring. Choose the correct liner, rotor, and filter to reduce wear and keep pressure loss within the system limit.