1. Select the type of proximity switch according to the detected object. If the detection object is metal, the inductive proximity switch is preferred, and if the detection object is non-metal such as wood, plastic, paper, water, etc., or smaller and finer metals, the capacitive proximity switch should be selected.
2. The shape of the proximity switch is selected, which can be determined according to the position of the proximity switch, and there are generally cylindrical proximity switches, square proximity switches, and annular proximity switches. If you choose a cylindrical shape, you should consider how large the diameter is required, such as the diameter of the detection surface must also be selected if you choose a square type.
3. The induction interval of the proximity switch is selected, generally speaking, the detection interval of the proximity switch is relatively short, and the common ones are 1-50mm. The longer the detection interval, the larger the detection surface and the higher the price.
4. The position close to the switch sensing surface is generally available for front-end induction, upper induction, and inner hole induction;
5. The length of the cable near the switch is selected, and the length of the standard connection cable is 2 meters. If you need a longer connection cable, you should explain it to the manufacturer before ordering, but you can't add an extension cable after approaching the switch, which will simply lead to the instability of the output signal of the near switch.
6. The operating voltage of the switch output is selected, generally DC DC24V or AC AC250V are optional;
7. Selection of close switch output method, generally NPN-normally open, NPN-normally closed, PNP-normally open, PNP-normally closed, 2-wire normally open, 2-wire normally closed, DC 3-wire type, DC 4-wire type optional;
8. Selection of close switch connection method and method, there are outlet type, connector type, pig tail type optional;
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