Using the ultrasonic wave transmission in the fluid, acoustic velocity increases with the downstream direction, reverse flow direction is reduced, at the same propagation distance have different transmission time, according to the relationship between the transmission time difference and the flow velocity measure fluid velocity.
Flow rate is different in different position of the tube; flow velocity of tube central is faster than near the pipe wall velocity. Flow velocity distribution in the pipe can be expressed with velocity of cross section profile. Through the setting of flowmeter, and considering the velocity distribution of cross section, can calculate the average flow velocity, then according to the cross-sectional area of the pipe calculate volume velocity.
SWU901 fixed ultrasonic flowmeter, which is based on the TGA time measurement algorithm we independently developed.
What is TGA? TGA is the time we study the ultrasonic measurement algorithm and reference existing various TDC algorithm, ultimately successfully research and develop to achieve a high speed and high precision measuring time measuring algorithm. TGA algorithm is complex, the process of computation is very big, so we need to apply an independent 400000 gate array (FPGA) to implement TGA algorithm, to ensure high speed and high precision measurement.
TGA measurement technology greatly promoted SWU901 ultrasonic flowmeter sampling rate, measuring rate can be greater than 300 times per second, compared with other products, the tolerance rate of bubble within tube diameter has the very big promotion. Highest can survive for five seconds of continuous bubble increased.
Signal intensity increase, for a variety of incrustation, pipe rust and tube lining, with a greater penetrating power. Biggest can withstand 18 mm tube lining of cement. With enhanced sensors, the measurement range of jacketed sensor (application) can reach 2000 mm.
Two options: jacketed and plug-in sensor type.
Using our unique manufacturing process and matching technology, zero range can be controlled within 0.03 m/s, static time difference between each pair of sensors is < 2 nanoseconds, thus effectively ensure the authenticity of the time difference between measurement.
Jacketed sensor installation is simple, strong flexibility. During the installation process, do not need to stop water supply. Especially for the measurement of acid or alkali medium, only need to clamp sensors on the outside of tube wall can obtain accurate flow.
Traditional industry: Water treatment industry, hydropower, petrochemical, agricultural irrigation
Production process control: Pure water, ultrapure water, medicine, cleaning machine, dyeing
Commercial: Central air conditioning, intelligent buildings, other household metering