WSL Ultrasonic Liquid Level Transmitter has easy to use and integrated design. It features a huge LCD display that will make it simple to control and observe. What makes this transmitter special is that it is protected against high current and voltage. It has lightning and thunder protection, meaning it will not malfunction when receives high current or voltage.
Ultrasonic level meter emit ultrasonic pulses by sensor(transmitter) and the pulse are receive by same sensor (receiver) after it reflected from the liquid surface. The pulses are converted into electrical signal through the piezoelectric crystal. According to the propagation time of acoustic wave emitted to the surface of the object is proportional to the distance between the transmitter and receiver, so the distance between sensor and liquid level can be calculated by the propagation time of receiver and transmitter.