In recent years, with the rapid development of science and technology, the increasing automation of electronic mechanical products used in industry and life, such as in the production of chemical food materials, medicine and other industries, is inseparable from the liquid level sensor. There are photoelectric type, floating ball type, capacitive type, electrode type and other types, and the ultrasonic liquid level sensor is a relatively special liquid level sensor. Let's take a look together with everyone to see what is special about ultrasonic liquid level sensors compared to other liquid level sensors?

Ultrasonic liquid level sensor is a sensor developed by using the characteristics of ultrasonic waves. It is mainly composed of piezoelectric wafers, which can transmit and receive ultrasonic waves. Its working principle is as follows:

The ultrasonic liquid level sensor sends out ultrasonic pulses. The sound waves are reflected by the liquid surface and converted into electrical signals by the ultrasonic receiver. The distance between the sensor and the measured liquid surface is calculated by the time between the transmission and reception of the sound waves. From this, the position of the liquid is determined.

If there are obstacles under the installation position of the liquid level sensor, it is not suitable to use the ultrasonic liquid level sensor. The obstacles will affect the ultrasonic emission and cause the signal loss; it is necessary to adjust or avoid the appearance of obstacles.

Compared with the ultrasonic liquid level sensor, other liquid level sensors can only accurately detect the liquid level change at a certain position. The liquid level alarm point is fixed. The sensor is installed according to the position of the liquid level point to be detected. When the liquid level reaches the set point, the internal controller acts to realize the automatic display or control of the liquid level for setting the upper and lower limits. E.g:

To detect the change of the liquid level of the entire container height, or to display the remaining amount of liquid in the container in real time, the multi-point liquid level sensor can only be used to detect several liquid level points, but the multi-point liquid level sensor cannot Detects changes in liquid level throughout the height.