Proximity switch is a position switch that can be operated without making direct mechanical contact with moving parts. When an object approaches the sensing surface of the switch to an operating distance, it does not require mechanical contact and no pressure to make the switch actuate, thereby driving DC electrical appliances. Or provide control instructions to a computer (plc) device. Proximity switch is a kind of switch-type sensor (that is, non-contact switch). It has the characteristics of travel switch and micro switch. It also has sensing performance, reliable operation, stable performance, fast frequency response, long application life, and anti-interference. Strong ability, etc., and has the characteristics of waterproof, shockproof, corrosion resistance. Products are inductive, capacitive, Hall-type, AC and DC.
Proximity switches, also known as non-contact proximity switches, are ideal electronic switch sensors. When the metal detector is close to the sensing area of the switch, the switch can be contactless, no pressure, no spark, and quickly send out electrical instructions, accurately reflecting the position and stroke of the motion mechanism, even for general stroke control, its positioning accuracy, operation Frequency, service life, ease of installation and adjustment, and ability to adapt to harsh environments are incomparable with ordinary mechanical travel switches. It is widely used in machine tool, metallurgy, chemical, light textile and printing industries. It can be used as limit, counting, positioning control and automatic protection in the automatic control system.