No moving parts inside the pipe, unimpeded flow of parts, measuring almost no additional pressure loss. ? measure and the velocity distribution, the fluid pressure, temperature, density, viscosity and other physical parameters. ? in the field can be modified according to actual needs of users online range. ? High-resolution backlit LCD display, full Chinese menu, easy to use, simple, easy to understand. ? using SMD devices and surface mount (SMT) technology, circuit reliability. ? 16-bit embedded microprocessors, computing speed, high precision, programmable low-frequency square wave excitation frequency and improve the flow measurement of the stability, low power consumption. ? Full digital processing, anti-interference ability, reliable measurement, high precision flow measurement range up to 150:1; ? low EM1 switching power supply for power supply voltage range, anti-EMC performance; ? house has three totalizer reverse, respectively show the cumulative total amount of forward and integrating the difference between the amount has not power down the internal clock, can record 16 power-down time; ? with RS485, RS232, Hart, and Modbus communication signal words such as rest output. ? A self-test function and self-assertion