RF admittance level switch working principle adopts advanced RF admittance technology to solve the problem of material adhesion, and can measure cement clinker, coal powder, ash powder and other media. With higher stability, it can work reliably even under extreme site conditions, and is not affected by hanging materials, temperature, pressure, density, humidity, etc.

How to select rotary level switch? First, consider the characteristics of the measured medium, such as temperature, pressure, etc. The RF admittance level switch can only be used for level measurement with dielectric constant ≥ 1.6. In addition, remember that when the temperature is greater than 260 ℃, the ultra-high temperature RF admittance level switch should be selected. Also, special attention should be paid to that the RF admittance level switch is generally used in normal or micro pressure environments.

Secondly, the probe should also be considered. Since the RF admittance level switch is a contact measurement, the measured material should not be too large, otherwise its probe is very easy to be damaged. In addition, when the installation position is determined, it is necessary to select the appropriate insertion depth and protective pole length according to the situation of the tank. The insertion depth is generally the best when the probe can fully contact the material. For the length of the protective electrode, it must be more than 50 mm deep inside the silo.

From the above key points of selection of RF admittance level switch, it is similar to the selection requirements of radar level meter. The measured medium and working condition environment are still the most important factors to be considered in the model selection.