What's the difference between a photoelectric switch and a proximity switch? The difference between a photoelectric switch and a proximity switch is the way the object is detected. When selecting a model, what occasions are photoelectric switches used and when are proximity switches used?
When the detection switch is not convenient to approach the detection object or is easy to be damaged near the detected object, when the space is limited, the measured object can be small and can be used with the photoelectric switch, which does not distinguish metal from non-metal. It should be noted that according to the receiving tube light source of the photoelectric switch to determine whether the switch action, it can be divided into bright pass type and dark pass type, according to the form of output circuit, it can also be divided into pnp type and npn type;
When the detection switch is easy to approach the measured object and is not easy to be damaged, the detection metal object uses inductance, and the non-metal object uses capacitive type. According to the output circuit form, it can also be divided into pnp type and npn type.
Some detection switches also adjust the sensitivity of the knob;