1. Non-contact detection avoids damage to the sensor itself and the target.
2. Non-contact output, long operating life.
3. Stable detection even in harsh environments with water or oil splashing.
4. Fast response speed.
5. Small sensor head, flexible installation.
The proximity sensor can detect metal targets close to the sensor without actually touching the target.
All metal type sensors are basically high frequency oscillation type. Like the ordinary type, it also has an oscillation circuit, in which the energy loss caused by the flow of induced current in the target object affects the oscillation frequency. When the target is close to the sensor, the oscillation frequency will increase regardless of the target metal type. The sensor detects this change and outputs a detection signal.
The proximity sensor can detect metal targets close to the sensor without actually touching the target. The capacitive proximity sensor is composed of a high-frequency oscillator and an amplifier, and a capacitor is formed by the sensor detection surface and the outside world, which participates in the operation of the oscillating circuit, and is initially in an oscillation state. When an object approaches the sensor detection surface, the circuit capacitance changes, causing the high-frequency oscillator to oscillate. The two states of oscillation and vibration stop are converted into electrical signals and converted into binary switching signals by amplifiers.
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