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Functions and differences of electromagnetic flowmeters, vortex flowmeters, and turbine flowmeters: 1. First, let’s look at the function of vortex flowmeters: These flowmeters are widely used in industries such as petroleum, chemicals, metallurgy, power generation, textiles, and papermaking for the measurement and control of superheated steam, saturated steam, compressed air, and various gases (oxygen, nitrogen, hydrogen, natural gas, gas, etc.), as well as water and liquids (such as water, gasoline, alcohol, benzene, etc.). 2. Next, consider the function of turbine flowmeters: The TUF turbine flowmeter was developed in the United States in 1938; it was used for measuring the flow rate of fuel in aircraft. It wasn’t until after World War II that there was an urgent need for a flowmeter with high precision and rapid response, due to the use of jet engines and liquid jet fuel. Thus, the turbine flowmeter was invented. 3. Next, let’s look at the function of electromagnetic flowmeters: The measurement principle of electromagnetic flowmeters is Faraday’s law of electromagnetic induction, and they are primarily used to measure the volumetric flow rate of conductive liquids and slurries in closed pipelines. This includes highly corrosive liquids such as acids, bases, and salts. Summarize the characteristics and differences of these three types of flowmeters: 1. Vortex flowmeter: As can be seen from its \"functions\" as mentioned above, it is a suitable and commonly chosen measuring tool for various gases (such as compressed air, gas, natural gas, etc.) for customers. 2. Turbine flowmeter: As can be seen from the second point mentioned above regarding its functions, \"various types of oils (such as gasoline, diesel, and oils with high viscosity)\") are measurement tools that are well-suited and commonly chosen by customers. 3. Electromagnetic flowmeter: As can be seen from the third point regarding its functions, \"various conductive liquids (such as water, sewage, acids, alkalis, salts, and other highly corrosive liquids)\") are the types of liquids for which this measuring instrument is particularly suitable and commonly chosen by customers.