The principle of microwave type level sensors are based on an antenna system transmits and receives ultra-microwaves that are reflected in the surface. The signals are transmitted at the speed of light, being the time between sending and receiving the same proportion to the level of fill of container. Thanks to the propagation procedure specially developed for this purpose can be measured reliably and accurately even extremely short time intervals. Radar sensors operate in low power frequency bands C (when the frequency below the 6GHz) and K (frequency greater than 20GHz).
Microwaves (radar waves) are reflected by the impedance mismatch between air and product from the same sensor to detect it again. The return time of the signal is a measure of the height of the empty section of the tank. If this distance is subtracted from the total height of the tank, you get the product level. Turnaround time becomes an analog output signal.
Thanks to the latest microcontroller technology, these sensors are able to reliably recognize the correct signal, eliminating false echoes to measure the levels with great precision.
Microwaves (radar waves) are reflected by the impedance mismatch between air and product from the same sensor to detect it again. The return time of the signal is a measure of the height of the empty section of the tank. If this distance is subtracted from the total height of the tank, you get the product level. Turnaround time becomes an analog output signal.
Thanks to the latest microcontroller technology, these sensors are able to reliably recognize the correct signal, eliminating false echoes to measure the levels with great precision.
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