Digital Doppler Flow Rate Flow Sensor is a high-precision instrument with the Doppler effect principle to measure fluid velocity and flow rate. The Doppler Flow Rate Flow Sensor transmits sound waves or ultrasonic waves at a specific frequency into liquid. When the sound waves encounter suspended particles or bubbles in the fluid, they will be scattered and reflected. The freguency of these reflected waves is Doppler-shifted by the fluid flow, That means the frequency of the reflected waves increases as the fluid moves toward the sensor and decreases as the fluid moves away from the sensor, The amount of frequency shift detected by the sensor is proportional to the velocity of the fluid. Thus, the velocity of the fluid can be calculated by measuring the freguency shift.

Application fields: rivers, channels, municipal drainage, industrial pipelines, and other occasions.