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The intelligent metal rotameter uses a variable-area measurement principle and is suitable for measuring liquids and gases. All-metal construction, available in indicator type, electric remote transmission type, corrosion-resistant type, high-pressure type, jacketed type, and explosion-proof type. It features standard analog signal outputs of 0-10mA and 4-20mA, as well as on-site indication. Accumulation, digital communication, on-site adjustment of measurement parameters, functions for different power supply methods, available in versions with magnetic filters and special specifications. It is widely used in industries such as petroleum, chemicals, power generation, pharmaceuticals, food, and water treatment. During flow measurement in complex and harsh environmental conditions, as well as under various medium conditions. Intelligent metal rotameters are available in both local display versions and intelligent remote transmission versions. They feature a pointer for displaying the instantaneous flow rate, an LCD screen for showing both the instantaneous and cumulative flow rates, upper and lower limit alarm outputs, pulse output, a standard two-wire 4–20mA current output, Hart protocol output, and ModBus protocol output – offering users a wide range of options for their needs. In addition, this meter uses an advanced 16-bit microprocessor and high-quality industrial components, ensuring excellent performance of the flowmeter in various applications. Smart metal rotameters are a type of instrument that is quite frequently used among flow measurement devices. It is a traditional variable-area flow meter with many advantages, such as a simple structure, reliable operation, low and stable pressure loss, and the ability to measure media at low flow rates. These advantages stem from its measurement principle, and it generally needs to be installed vertically. However, in certain specific industrial applications, horizontally installed flowmeters are required. Although their measurement principle is the same as that of traditional vertical float flowmeters, they can be installed horizontally. The intelligent metal rotor flow meter features a measuring tube indicator designed using an independent concept; it offers measurement systems made of stainless steel, Hastelloy, titanium, or PTFE, and it comes with a design that reduces pressure loss. The magnetic coupling structure of this intelligent metal rotor flow meter ensures more stable data transmission and signals. Insulating or heating jackets, available in vertical, horizontal, and various installation styles, are better suited for different applications. Intelligent metal tube rotameters are suitable for measuring the flow rate of media in small diameters and at low flow velocities, with low requirements regarding straight pipe sections.