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Description of the application field of radar level meter

What is currently plaguing users in the field of level measurement is the level measurement of some large solid silos, especially for silos filled with dust and disturbances within 50/100 m. Related art instruments such as the capacitive or guided wave radar TDR are subjected to a strong tensile load when the level is lowered during discharge, which may damage the meter or collapse the top of the chamber. Heavy hammers often have problems with burying hammers and require frequent maintenance, as are most other mechanical instruments. High dust conditions may exceed the capabilities of non-contact ultrasonic level measurement systems.
The high frequency FM radar technology is especially suitable for the level measurement of this large solid silo! Today's high-frequency radars are generally radar level gauges operating in the K-band (24 to 26 GHz). The higher the operating frequency of the radar, the shorter the wavelength of the electromagnetic wave, and the easier it is to have better reflection on the inclined solid surface. The narrow beamwidth effectively avoids obstacles, and the high frequencies allow the radar to use smaller antennas. The FMCW frequency-modulated continuous wave microwave level gauge emits and receives signals simultaneously, and more microwave signals are emitted in the same time. In the solid measurement, the wave loss phenomenon in the measurement of high dust solid silos can be reduced.
Therefore, high-frequency FM radars for solid-state measurement can provide accurate and reliable measurements, and are also well used in media such as PP powder and PE powder in the chemical industry. However, due to technical limitations, there is currently no high-frequency radar level gauge operating above the K-band. There are also low-frequency radars using 5.8 GHz to 10 GHz to measure solids, but because of their lower frequency and longer wavelengths, the transmitted waves are not easily diffusely reflected, resulting in many secondary or multiple echoes under high dust conditions. The interference and noise are very large, so the solid powder measurement is gradually eliminated.

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