Joint measurement - SIN-FDC300 Doppler radar flowmeter - High precision, non-contact measurement, water level measurement station, irrigation branch channel, sewage and rainwater pipe network measurement -3

The measurement principle of radar Doppler flowmeter is based on the Doppler effect in physics. According to the Doppler effect of electromagnetic waves, when there is relative motion between the wave source and the observer, the frequency perceived by the observer will be different from the frequency emitted by the wave source. The frequency change of this relative motion is directly proportional to the relative velocity of the two objects. In the radar Doppler flow measurement method, the radar sensor emits electromagnetic waves, which generate frequency offset upon contact with the fluid surface and reflect back onto the receiver. The frequency difference between the transmitted wave and the received wave is the Doppler frequency shift of the wave generated by fluid motion. Since this frequency difference is proportional to the fluid flow velocity, measuring the frequency difference can obtain the flow velocity and thus the fluid flow rate.