LUT-series ultrasonic liquid (material) level meter is a non-contact, low-cost, easy-to-install, and has more limitations in use than ordinary liquid (material) level meters. LUT-ultrasonic liquid (material) level meter Easy-to-install features meet most measurement needs. The principle is to use the propagation speed of ultrasonic waves in the air to be known, measure the time when the sound waves are reflected from obstacles after being transmitted, and calculate the actual distance from the transmitting point to the obstacle according to the time difference between transmitting and receiving.