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JM310 RF admittance level switch

In order to overcome the influence of attachments, a protective electrode is added between the main electrode and the ground electrode to ensure the correct signal level. This special electrode configuration is particularly suitable for the detection of a variety of different materials and is not affected by material adhesion. The probe often encounters the situation that materials are attached to it, and capacitance and resistance are formed between the three electrodes. Because the potential and waveform between the main electrode and the protective electrode are the same, no current will pass 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 ground electrode to prevent radio frequency current from reaching the barrel wall through the medium between the main electrode and the ground electrode. Although a small amount of RF current will pass between the guard electrode and the ground electrode, the circuit will not detect this current value. Due to the function of the protective electrode, only the change of the radio frequency current passing between the main electrode and the barrel wall will be detected by the circuit. Therefore, when the probe contacts the material, an accurate signal level will be generated. The 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 installation and adjustment ◆ good stability, not affected by temperature ◆ adjustable delay output 0~90 seconds ◆ IP65 enclosure protection grade ◆ DPDT,5A contact output ◆ temperature resistance up to 550 ℃ ◆ can be used for liquid, slurry, solid, particle and interface detection


Keywords: Valve

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Detailed introduction

JM310 RF admittance level switch
Product overview
In order to overcome the influence of attachments, a protective electrode is added between the main electrode and the ground electrode to ensure the signal.
The alignment is correct. This special electrode configuration is particularly suitable for the detection of a variety of different materials and is not affected by material adhesion. Probe regular
In case of material adhering to it, capacitance and resistance are formed between the three electrodes, due to the potential and waveform between the main electrode and the protective electrode
Sample, so there will be no current through the medium of the two electrodes. The admittance level switch uses the above principle to place one between the main electrode and the ground electrode.
The electrodes are protected to block RF current from reaching the barrel wall via the medium between the main electrode and the ground electrode. Between the guard electrode and the ground electrode
A small amount of RF current passes through, but the circuit does not detect this current value. Due to the role of the protective electrode, only between the main electrode and the barrel wall
The change in the RF current passing through the probe is detected by the circuit, so when the probe touches the material, an accurate signal level is generated, which is the signal.
The magnitude of the 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 installation and adjustment
◆ Good stability, not affected by temperature
◆ Adjustable delay output 0~90 seconds
◆ IP65 enclosure protection grade
◆ DPDT ,5 A contact output
◆ Temperature resistance up to 550 ℃
◆ Can be used for liquid, slurry, solid, particle and interface detection
















 

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