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 orientation of the proximity switch device, 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 square type, you must also choose the diameter of the detection surface.
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 one is 1-50mm. The longer the detection interval, the larger the detection surface and the higher the price.
4. The orientation of the sensing surface of the proximity switch is generally optional for front-end induction, upper induction, and inner hole induction;
5. The wire length of the proximity switch is selected, and the length of the connecting 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 the proximity switch, which will simply lead to the unstable output signal of the proximity switch.
6. The output working voltage of the proximity switch is selected, generally DC type DC24V or AC AC250V optional;
7. Proximity switch output method selection, generally NPN-normally open, NPN-normally closed, PNP-normally open, PNP-normally closed, 2-wire normally open, 2-wire normally closed, DC 3-wire, DC 4-wire optional;
8. The proximity switch connection method is selected, and there are outlet type, connector type, and pig tail type;
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