Radar level meter is a universal radar level meter, which is based on the principle of time travel. Radar waves run at the speed of light, and the running time can be converted into level signals through electronic components. The probe emits a high-frequency pulse that travels at the speed of light in space, and when the pulse hits the surface of the material, it is reflected back to be received by the receiver inside the meter, and the distance signal is converted into a level signal.
The radar level meter transmits very short microwave pulses of very low energy through the antenna system and receives them. Radar waves travel at the speed of light. The running time can be converted into a level signal by electronic components. A special time-extension method ensures stable and accurate measurements in a very short time. Even in the case of complex working conditions, there are false echoes, with the latest micro-processing technology and debugging software can accurately analyze the level of the echo. The antenna receives the reflected microwave pulse and transmits it to the electronic circuit. The microprocessor processes the signal and recognizes the echo generated by the micropulse on the surface of the material. The correct echo signal recognition is done by intelligent software, and the accuracy can reach the millimeter level. The distance D from the material surface is proportional to the time travel T of the pulse :D=C×T/2 where C is the speed of light because the distance E of the empty tank is known, then the level L is :L= e-d Output by input empty tank height E(= zero), full tank height F(= full scale) and some application parameters to set, application parameters will automatically make the instrument adapt to the measurement environment. Corresponds to 4-20mA output. Application medium: The intelligent radar level meter is suitable for non-contact continuous measurement of the level of liquid, slurry and granular material, suitable for large changes in temperature and pressure; Where inert gases and volatilization are present. The measuring method of microwave pulse is adopted, and it can work normally in the range of industrial frequency band. Beam energy is low, can be installed in a variety of metal, non-metal containers or pipelines, no harm to the human body and the environment.