█ Introduction

Because of the advantages of  directional ultrasonic transmitter, direction, strength and easy to control, and  no touch with the object being measured etc., it is widely used in liquid level  measurement. In the measurement, ultrasonic pulse from the sensor (transducer)  to issue, reflected by the surface acoustic wave sensor to receive the same  after the conversion into electrical signals, then, through the time of  transmitting and receiving sound waves to calculate the distance from the sensor  to the measured object.

                                                                                                                  Ultrasonic sensor in liquid level detection

█  The principles of ultrasonic  liquid Level measurement

Principles of ultrasonic sensor

Ultrasonic level meter works  by ultrasonic pulse from the sensor (transducer) is reflected by the surface  acoustic wave sensor to receive the same after the conversion into electrical  signals, then, through the time of transmitting and receiving sound waves to  calculate the distance from the sensor to the measured object. The relationship  between the distance up to the object. L and the reflecting time T is expressed  by the following formula :

L=C · T/2

C is the velocity of sound; L is  the measured distance; T is the time of transmitting and receiving sound  waves

Principles of measuring distance of ultrasonic sensor

Principles of measuring distance of ultrasonic sensor

█  The  application field of Ultrasonic liquid Level measurement 

The use of ultrasonic level  measurement principle can be widely used in meteorological water level  measurements, large tank level measurement, level measurement system of salt,  testing well water, lakes, canals level, the tank liquid level, fill level in  industrial production etc. It can be designed different ultrasonic level meters  according to different needs.