The rapid development of science and technology and high-tech products change rapidly. The circulation of commodities more boundary. The scope of product sales area makes more and more. So the product can in most areas of normal use without causing impact on function. The product itself does not cause damage to the need for product environmental testing to understand the products can meet the needs of the use of environmental problems. Whether.

No matter for military or civilian products. Environmental laboratory should have broad applicability. To be able to test the project as much as possible. And the test environment and the future use of the environment should be as close as possible to the environment. In order to maximize the role of experiment. But in the laboratory simulation environment and the actual use of the environment there are differences.

Therefore, when selecting the test items, we should have a specific analysis of the environmental requirements of the test items. We should ensure that the selected test items can represent the main use environment and speed up the test.

The Second World War and after the war. In order to ensure that weapons and ammunition can also achieve the desired performance requirements in harsh natural conditions. In western countries, especially the United States. Established a variety of test and environmental test chamber. And the development of environmental testing standards in detail. Any U.S. weapons. Parts and ammunition must be simulated environment test before delivery to the army. The field experiment was carried out in the test site. Any not through the test standard of products is not allowed to deliver the military. The United States has environmental testing as part of the identification and test work.

So far, mainstream countries have standardized environmental testing. Many countries have also established environmental testing standards. Generally speaking, most of these standards are similar.

1. A low pressure (altitude) is mainly used for simulation test of low voltage test equipment in the plane of the non pressurized cargo and on the plateau pressure decreased sharply even after the loss of cabin pressure. The purpose of the test is used to influence on the service performance and the life of the inspection equipment in the low pressure environment and pressure decreased rapidly. Low pressure test the simulated maximum height of thirty thousand meters (usually civil aircraft flying at an altitude of 8000-12000 meters altitude between 14000-18000 meters) at the same time, test the temperature value to the atmospheric temperature height corresponding to prevail.

2. High temperature test equipment for testing at high temperature but not directly affected by sunlight environment. The main simulation equipment in poor cooling space or place and use close to the engine high heat conditions. Performance test is designed to test the products stored in high temperature environment and use

3. Low temperature test and low temperature test as the name suggests that in order to simulate the products / equipment in low temperature environment. The use of storage. To eliminate the corresponding problems in finished products. In our country as an example. The northeast of Jilin and Heilongjiang in the winter when the outdoor temperature is -20 degrees Celsius. Therefore, most products are necessary to ensure the low temperature test can be used normally in the northern cold climate areas.

4. Thermal shock test thermal shock test is mainly used to simulate product / equipment / weapons can withstand temperature change extremely rapidly. Such as high altitude airdrop weapons. In the cold and heat transfer area in indoor and outdoor products. It is necessary to ensure that the normal thermal shock test performance is not due to sharp changes in temperature decreases.

5. Solar radiation test of solar radiation test is a test of exposure to direct sunlight objects and materials. The solar irradiation can cause photochemical reactions and the thermal effect of material. The solar radiation test can determine the outdoor use and storage conditions of equipment products.

6. Rain test / test waterproof rain test is mainly used to simulate product / equipment / weapons and equipment in use and storage by rain. According to the different level. A dripping rain test spray test test test water immersion test of diving test various waterproof grade. With waterproof performance testing equipment

7. The damp heat test of damp heat test also moisture test. Mainly used to simulate the product / equipment used in the low latitude regions in the warm and humid environment. The damp heat test is almost a necessary product test. Because in the whole Asia. In addition to the northern inland region including Japan and South Korea China of the Yangtze River and the Yangtze River to the South most the area in a year have long or short warm season.

8. Moldproof test conditions for microbial growth is a warm and humid climate. Warm humid climate is widely distributed in tropical and subtropical areas. Standard products / all equipment and even weapons and equipment in the design should consider the problem. Mouldproof experiment is designed to study the mildew of equipment products.

9. The salt content of salt fog test in coastal areas with high salt in the air is moist air about everything in the environment of products / equipment corrosion caused by salt spray test. The purpose is to detect the products / equipment used in salt in the humid environment of protective layer material and the influence of internal circuit products.

10. Sand and dust test this test is mainly used for the detection of products / equipment used in outdoor dust with high content of air will arise. The degree of air pollution in China is very high. All of the open-air outdoor use equipment are necessary for sand and dust test has ensured its durability and improve product quality

11. Freezing test this test is used to simulate the product / equipment in the freezing rain encountered the problem.