Accuracy performance: pipe selection: > 0.3m/s, ± 0.5%; < 0.3m/s ± 2mm / S;

　　Requirements for zero straight pipe section: the measurement accuracy can still be guaranteed when the zero straight pipe section is installed under the condition of front and rear two elbows;

　　Convenient digital transmission: optional 4-20mA or RS-485 data transmission mode, convenient and reliable;

　　Bluetooth communication: it supports setting parameters through Bluetooth communication. It can set parameters wirelessly within a short distance (20 meters), which is convenient for field operation.