1. Durability
The reason why the switch has such a long life is that the switch acts as elastic from the vertical direction of the elastic membrane. Although there are millions of peristalsis after the elastic membrane, because the creep rate is very small, only 0.1 - 0.3mm (including the travel switch), coupled with reasonable data selection, it is far from reaching the yield limit of the film, so the film data can accept more than one million times the life and maintain its shape. On the other hand, the touch of the switch is a vertical touch and the amount of wear is minimal; The touch with the screen printing can form enough thickness, and touch a layer of conductive carbon on the silver paste, complete with high wear resistance, self-lubrication, so that the life of the close switch is more than ten times more than that of the mechanical touch switch.
2. Outstanding sealing performance
Because the proximity switch sensor is an integral sealing structure, the touch of the switch is not affected by the corrosion of harmful gases, is not easy to be oxidized, has the characteristics of waterproof and dustproof, and is suitable for various environments.
3. Small size, light weight and reliable structure
The proximity sensor switch planning can be arranged and combined into a film keyboard, set the density, it is composed of a multi-layer film composite sealing sheet structure, connecting all the switches between the wire and the wire is completed by screen printing at one time, the total thickness is 1 - 3mm, so the size is reduced, the quality is reduced and the reliability is improved.
4. Rich colors and beautiful appearance
The proximity switch can be planned according to the user's planning concept, showing the personality of the color in the planning, and showing the beauty of the data, the beauty of decoration and the comprehensive characteristics of the decoration function.
5. Reduce the matching cost of mechanical and electrical products
Traditional mechanical switches need to be welded or even fixed brackets when installed. With the proximity switch sensor mounting paste, simply remove the adhesive tape, which can be firmly attached to the surface of the machine, resulting in an instantaneous circuit connection throughout the rear circuit socket exit. Save labor, save materials, and reduce the cost of supporting. |
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The photoelectric switches are simply classified
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2. The connecting wires of the intrinsically safe end (blue end) and non-intrinsically safe end circuits of the barrier safety barrier should be laid separately in the wiring slot.
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Selection criteria for proximity switches
Points to note in the selection of proximity switches
1. The working voltage of the proximity switch output is selected, generally DC type DC24V or AC AC250V optional;
2. Proximity switch output method selection, generally NPN-normally open, NPN-...
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1. The interval from the launch surface of the probe to the liquid level should be smaller than the range of the purchased surface.
2. The interval between the launch surface of the probe and the highest liquid level should be greater than the blind area of the purchased surface.
3. The launch surface of the probe should be parallel to the surface of the liquid.
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1. Slotted photoelectric sensor
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SQ proximity switch,
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