What is waterproof circular cable connector ?
Waterproof cable connector is a connector that can be used in an environment with water, and can ensure that the internal mechanical properties and electrical properties of the connector can be used normally under a certain water pressure.
Why the quality of the waterproof connect is important ?
Circular waterproof connectors are widely used in outdoor environments and industrial automation fields. If the connector does not work properly in a harsh working environment, it will not only affect the progress of the work, but also affect the safety of the instrument. In order for the waterproof connector to work properly, the reliability of the waterproof connector is very important How to choose circular waterproof connector ?
When selecting and applying, we must make necessary selection and screening, so that we can really find the products we need most, and can really play the role of connectors in our production work.
1. Structural size
The external size of the connector is very important. There are certain space restrictions for the connection in the product, especially the single-board connector, which cannot interfere with other components. Select the appropriate installation method according to the use space and installation position (installation includes front installation and rear installation, installation and fixing methods include screws, collars, rivets or quick locking of the connector itself, etc.) and shape (straight, curved, T type, round, square);
2. Impedance matching
Some signals have impedance requirements, especially RF signals, which have stricter impedance matching requirements. When the impedance does not match, it will cause signal reflection, which will affect signal transmission. There is no special requirement for the impedance of the connector for general signal transmission
With the development of communication products, EMC has been paid more and more attention. The selected connector needs to have a metal shell. At the same time, the cable needs to have a shielding layer. The shielding layer should be connected with the metal shell of the connector to achieve shielding. For the effect, the injection molding method can also be used to wrap the plug part with copper skin, and the shielding layer of the cable and the copper skin are welded together.
There are two aspects to prevent mis-insertion: one is the connector itself. The connector itself rotates 180 degrees, and the wrong connection leads to wrong signal connection. Adjust the relative positional relationship of the connectors to make the assembly unique; on the other hand, in order to reduce the types of materials, several signals use the same connector. At this time, it is possible to insert the A plug into the B plug. At this time, attention should be paid to , if such a situation will cause serious consequences (not a simple alarm, with destructive), the A and B interfaces must be selected as different types of sockets.
5. Reliability of connectors
Connectors are used to connect signals, so the connection parts should be reliable (for example, surface contact is better than point contact, pinhole type is better than leaf spring type, etc.)
6. Use environment
When the connector is used in outdoor, indoor, high temperature, high humidity, salt spray, mold, cold and other environments, there are special requirements for the connector.
In the selection process of connectors, we should choose common objects as much as possible, especially among products of the same series, the selection of connectors has strong versatility, reducing the types of materials, increasing the quantity and reducing costs, and reducing supply. cargo risk.
8. Locking function
In order to prevent the connector from falling off when mating and to ensure good contact, the connector needs to have a locking function.
Cost is also an important factor in the selection process. With the increasingly fierce market competition, the appropriate selection of connectors, the cost of the connector itself and the processing cost need to be comprehensively considered.
The supply of connectors will be affected by many factors. General-purpose connectors are better than non-universal connectors, and domestically produced ones are better than foreign ones.
11. Insertion frequency.
Some equipment and instruments need frequent plugging and unplugging, if the plugging life is not enough, it will affect the test results of the instrument
Connectors can better reflect their environmental performance in terms of external material design. Because the external environment is extremely complex, it is necessary to adapt to these complex environments to ensure its performance. Otherwise, not only will it not be very good. Good work can be dangerous. Now there are many harsh environments, and there are also many types of special connectors for harsh environments that are more common in connector design. This one can be selected according to actual needs. Among them, there are finished products for high temperature, high humidity, corrosion resistance, salt resistance and other environments. for selection.
13. Brand and appearance
Because the main quality of the connector is inside, especially the internal circuit, which cannot be seen by the naked eye, so you must remember to look at the brand and appearance when purchasing, and it is best to ask for warranty.
The production process and application of connectors are becoming more and more specialized, with more scientific and technological elements, and will also be more suitable for the market to carry out diversified and humanized research and development, and to adapt to more environmental standards.