The measurement of the RF admittance level switch is based on the principle of capacitance. The probe in the container and the wall of the container form two plates of a capacitor. When the medium between the two plates of the capacitor changes, the capacitance value also changes. . The measurement principle formula is expressed as:
In order to study the relationship between probe diameter and capacitance changes, we make the following assumptions:
The first case: D=2000mm, d=10mm, ε=2, find the relationship between △C and H
The second case: D=2000mm, d=8mm, ε=2, find the relationship between △C and H
From the above, it can be seen that the larger the diameter of the RF admittance level switch probe is, the higher the sensitivity is; in addition, the closer D and d are, that is, the smaller the distance between the two electrodes is, the higher the sensitivity of the meter is. (Shenzhen as R&D Department)
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