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Product Overview
In order to overcome the influence of attachments, an additional protective electrode is added between the main electrode and the grounding electrode in the admittance level switch to ensure the correct signal alignment. This special electrode structure is particularly suitable for detecting various different materials and is not affected by material adhesion. Explorers often encounter situations where materials are attached to them, forming capacitance and resistance between the three electrodes. As the potential and waveform between the main electrode and the protective electrode are the same, there will be no current passing through the medium of the two electrodes. The admittance level switch uses the above principle to place a protective electrode between the main electrode and the grounding electrode to block radio frequency current from passing through the medium between the main electrode and the grounding electrode and reaching the barrel wall. Although there may be a small amount of RF current passing between the protective electrode and the grounding electrode, the circuit will not detect this current value. Due to the protection of the electrodes, only the changes in RF current passing between the main electrode and the barrel wall will be detected by the circuit. Therefore, when the probe comes into contact with the material, an accurate signal level will be generated. The magnitude of this signal level is proportional to the dielectric coefficient but inversely proportional to the resistance value. This signal is easily detected by the circuit and outputs a control signal.
Product features
◆ Not affected by material adhesion
◆ Easy to install and adjust
◆ Good stability, not affected by temperature
◆ Adjustable delay output for 0-90 seconds
◆ IP65 shell protection level
◆ DPDT, 5 A contact output
◆ Temperature resistance up to 550 ℃
◆ Can be used for detection of liquids, slurries, solids, particles, and interfaces
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