Vortex flowmeter is a kind of velocity flow meter, it is suitable for liquid, steam, and most of the gas flow measurement, measurement, and control. The vortex flowmeter uses a fine low-power 45*30 all-dot matrix LCD, which is clear, intuitive, and easy to operate; RS485 or HART communication can meet various needs of users. According to the actual needs of domestic industrial automatic control, a new generation of high-quality intelligent meters is developed using the latest international digital integration technology. The piezoelectric crystal is a new type of intelligent eddy current flowmeter for stress detection. The meter has the advantages of wide range ratio, high precision, low-pressure loss, good medium versatility, pulse, and current signal proportional to flow rate, RS485 communication output, ease of use with a computer, and so on.