The Ultrasonic Level Transmitter is a non-contact, low-cost, easy-to-install level meter. It applies the advanced technology of aerospace to the general livelihood industry. Compared with the general level meter, the ultrasonic level meter does not have many usage restrictions, and the installation characteristics can meet most level measurements.

Measurement principle
The working principle of the ultrasonic level meter is that the ultrasonic pulse sent by the probe is reflected back when it encounters the surface of the measured medium, and part of the reflected echo is received by the same transducer and converted into an electrical signal. Ultrasonic pulses propagate at the speed of sound waves, and the time interval from transmitting to receiving ultrasonic pulses is proportional to the distance from the transducer to the surface of the measured medium. The relationship between this distance value S and the speed of sound C and the transit time T can be expressed by the formula:
Representation: S=CxT/2

Application illustration

1 Dead zone
2 (H) Total measuring range
3 High 20mA position
4 Low 4mA position
5 The height of the interface
6 Measuring range

Application Features
Since the transmitted ultrasonic pulse has a certain width, the reflected wave in a small area close to the transducer overlaps with the transmitted wave, which cannot be identified and its distance value cannot be measured. This area is called the measurement dead zone. The size of the blind zone is related
to the model of the ultrasonic level meter.

Due to the advanced microprocessor and unique Echo Discovery echo processing technology, the ultrasonic level meter can be applied to various complex working conditions. The “false echo learning” function enables the instrument to correctly confirm the true echo and obtain accurate measurement results under multiple false echo conditions. The transducer has a built-in temperature sensor, which enables temperature compensation of the measured value. The ultrasonic transducer adopts the patented technology of the best acoustic matching, so that its transmitting power can be radiated more effectively, and the signal strength can be improved, so as to achieve accurate measurement.