LJC38A4-25-Z/BX 25mm long-range non-contact capacitive proximity switch sensor for Liquids, powders, granules

The sensing surface of a capacitive proximity switch is composed of two coaxial metal electrodes, which act like the electrodes of a non-linear capacitor and are connected in series within an RC oscillation circuit. When no object is nearby, the RC oscillator does not oscillate. When an object approaches the electrodes, the dielectric constant between the object and the electrodes changes, causing the capacitance to increase and the oscillator to start oscillating. Through subsequent circuitry, the signals of oscillation and non-oscillation are converted into a switch signal, thereby detecting the presence or absence of an object.

1.Wide detection range, capable of identifying metals, plastics, glass, paper, liquids, and almost all other materials.
2.Non-contact triggering, no mechanical wear, long service life, suitable for high-frequency work scenarios.
3.Fast response speed, can quickly capture the approach or departure of target objects, compatible with high-speed moving equipment.
4.Detection is unaffected by the color or surface roughness of the target object, offering strong stability.
5.Some models feature waterproof, dustproof, and anti-interference designs, suitable for use in harsh environments such as humidity, dust, and electromagnetic interference.