The basic principle of a radar sensor involves transmitting radio waves and receiving their reflected echoes. Radar represents radio detection and functionality. A radar sensor emits electromagnetic waves (usually in the microwave band) towards a target. When these waves hit an object, some of the energy reflects back to the radar sensor. By measuring the time it takes for the signal to return and calculate the speed of light, the radar sensor determines the distance to the object.
Additionally, the Doppler effect is used to measure the speed of moving objects based on the change in frequency of reflected waves.
A radar level sensor works on the same fundamental principles as traditional radar but is specialized for measuring the level of liquids, solids or slurries in tanks or containers. It emits microwave signals towards the surface of the material being measured. The sensor then detects the reflected signal from the material surface and calculates the distance to the surface based on the delay of the reflected wave.
By continuously measuring this distance, the radar level sensor accurately determines the level of the material in the tank or container. This technology is widely used in industries such as manufacturing, chemical processing and water treatment for accurate and reliable level measurement.
The basic principle of sensors is to convert physical quantities such as temperature, pressure, light or movement into electrical signals that can be processed, displayed or analyzed. The sensors detect changes in their environment and produce an output signal proportional to the measured quantity.
This output can be analog (direct voltage or current proportional to the detected quantity) or digital (discrete values representing specific conditions). Sensors are fundamental components in various applications, from industrial automation and environmental monitoring to electronic devices and medical devices. They play a vital role in automation, control and data acquisition in various fields of technology and science