Explore the influence of ambient temperature and humidity on the service life of M16 circular connectors

Because of its stable performance and high reliability, M16 circular connectors are widely used in industrial automation, outdoor equipment and communication systems. However, the complex and changeable ambient temperature and humidity conditions will have an important impact on the service life of the M16 circular connector. This article will explore how temperature and humidity changes act on different parts of the connector and provide recommendations for addressing these challenges.

First, the impact of temperature on the M16 circular connector

Thermal expansion and contraction of materials:

Insulation material: M16 connectors usually use polymer materials such as PA66 (nylon) as the shell. When the temperature changes too much, these materials will expand and shrink, which may cause the shell to crack or reduce the tightness.

Metallic conductors: Internal conductors (such as tinned copper) may expand and shrink at extreme temperatures to affect electrical performance, such as increased contact resistance, which leads to unstable signal transmission.

Influence of high temperature on contact performance:

In high temperature environments (such as close to or above 85 ° C), the contact point between the conductor and the pin may deteriorate due to accelerated metal oxidation, thereby increasing the contact resistance and affecting the conductivity and stability of the connector.

Low temperature brittleness risk:

In low temperature environments (such as -40 ° C and below), the connector housing may become fragile, and it is more susceptible to mechanical stress damage during insertion and removal, reducing the service life.

Second, the influence of humidity on the M16 circular connector

Hazards of moisture intrusion:

When moisture enters the connector, it may cause contact oxidation or corrosion, which affects the conduction performance.

If the moisture condenses into water droplets, it may also cause a short circuit, which can damage the entire system.

Insulation resistance reduction:

A high humidity environment (such as relative humidity of more than 80%) will cause the surface of the connector insulation material to absorb water, thereby reducing the insulation resistance and affecting the safety of electrical performance.

Metal corrosion:

High humidity coupled with corrosive gases (such as acidic or alkaline gases in industrial environments) will accelerate conductor corrosion, especially if the connector is not shielded or sealed protection is more vulnerable.

Third, the comprehensive impact of temperature and humidity on the sealing performance of M16 connector

M16 circular connectors usually have IP67 or higher protection performance, which can effectively block the intrusion of external moisture and dust. However, when exposed to extreme temperature and humidity conditions for a long time, seals (such as rubber rings) may fail due to aging or physical deformation, thus affecting the overall tightness of the connector.

Here are some possible manifestations:

Rubber aging: High temperature accelerates the hardening and cracking of rubber seals, resulting in reduced sealing effect.

Moisture erosion: Excessive humidity may lead to surface hydrolysis of the seal ring, affecting its elasticity and function.

Fourth, measures to extend the service life of M16 circular connector

Choose high quality materials:

Housing materials: high-quality weather-resistant plastics such as PA66+GF can significantly improve the heat, cold and moisture resistance of the housing.

Conductor coating: tinned or gold-plated metal contacts can effectively reduce the occurrence of oxidation and corrosion.

Reinforced seal design:

High level of protection: Ensure that IP67 or IP68 connectors are selected to protect against moisture and moisture intrusion.

Seal inspection: Regularly check the status of the seal ring, timely replacement of aging or damaged seals.

Optimize the installation and use environment:

Avoid exposing connectors to extreme temperature and humidity conditions for a long time, such as installing shielding devices to reduce the impact of hot or humid environments.

In industrial environments, connectors should be avoided from contact with corrosive gases or liquids.

Regular maintenance and maintenance:

Clean contacts: Use professional cleaners to regularly clean conductor contacts to avoid oxidation and dirt buildup.

Check insulation resistance: Evaluate the electrical performance of the connector by measuring the insulation resistance value to ensure its safe operation.