The maximum measurement range of FDU92 ultrasonic sensor is 20m (65ft) for liquids, Solid 10m (33ft), Suitable for continuous, non-contact level measurement of liquids, slurries, sludge, powders, and solid blocks, maintenance free, and can also be used for flow measurement in open channels and measuring weirs. The measured value is not affected by dielectric constant, density, or humidity, and the self-cleaning function of the sensor can eliminate the influence of medium adhesion on the measurem