Ultrasonic Level Sensor, Output 4-20mA/1-5V/RS485, 0-40M

Ultrasonic level sensor for non-contact liquid/solid/powder tank level measurement has maximum measuring range 0-40m, can transmit and output 4-20mA, RS485, 2 relays, 3 NPN signal to remote control system.

Specification:

Note: * denotes optional parameters, you can select parameters in drop-down lists to finish your order. Some customizable parameters can't be selected from the lists directly, please contact customer service staff for further communication.

Installation diagram:

Tips: 6 considerations for using ultrasonic level sensors

1. There should be no obstacles under the sound wave. Since the ultrasonic level sensor uses the principle of sound wave reflection to achieve liquid level measurement, if there are obstacles, it will affect the ultrasonic emission, resulting in signal loss and affecting the measurement effect.
2. Ultrasonic liquid level sensor measurement is prone to dead zone. This is because, during the transmission of ultrasonic pulses, due to the mechanical inertia occupying the transmission time, a small area near the ultrasonic transducer cannot receive sound waves, and the area that cannot be measured is called a dead zone. The size of the dead zone is related to the measurement distance of the ultrasonic wave. The smaller the measurement distance, the smaller the dead zone. The larger the measurement distance, the larger the dead zone.
3. Ultrasonic tank level sensor measurement is easily affected by temperature. In actual measurements, changes in temperature cause changes in the speed of sound, which in turn lead to level measurement errors.
4. It is not suitable to measure level in pressure vessels. Since the pressure mainly affects the level probe, and there is a certain relationship between the pressure and the temperature. The change of the pressure will affect the change of the temperature, and then the change of the speed of sound, which will affect the accuracy of the measurement.
5. Dust is the most influential factor of ultrasonic level sensor measurement. The dust environment has very little influence on the speed of sound, but the attenuation of the sound wave is obvious, so it is best not to use it in this occasion.
6. The ultrasonic level sensor cannot be used in the occasions where there is water mist, a medium that is easy to produce a large amount of foam, and a volatile medium. All these mediums are easy to absorb sound waves or interfere with sound wave emission, resulting in signal loss and reduced accuracy.