Application of high and low temperature test chamber in Electronics, Aerospace and Military

Electronics –high and low temperature test chamber

An important aspect of the production of electrical components and complete systems is to determine the humid conditions that result in the failure of components. The conditions that are tested vary between 60% to 85% humidity. The purpose of the testing is multidirectional and is used to determine how products will perform in storage, shipping, and in harsh operational conditions.

When testing electronics, it is not necessary to examine humidity at low temperatures. As the temperature rises above 50° C, humidity becomes an important factor in how a product will perform. In those conditions, humidity has to be measured for condensation on electronic devices.

Aerospace –high and low temperature test chamber

Much of the testing for aerospace products is similar to that for electronic components since aerospace instruments are subjected to harsh conditions. One of the tests used on aerospace products, due to the exposure to varying climatic conditions, is thermal cycling where a component is put through wet and dry atmospheres in rapid succession.

The time between exposure depends on how the part will be used and its type. For aerospace products, there are a strict set of standards that manufacturers are required to follow. Many of them correspond with those established for the military.

Military –high and low temperature test chamber

The conditions that products for the military have to be tested against are wind, rain, dust, and extreme heat. Humidity chambers are able to replicate high moisture atmospheres in a controlled environment to provide substantial data regarding the ability of a weapon or component to survive harsh conditions.

The United States defense standards or military standards are identified by codes, which are represented by MIL-STD, MIL-SPEC, or MilSpecs. Adherence to these codes ensures that products for the military meet the required specifications for reliability, compatibility, and interoperability. In the case of humidity, the standards define the correct heat to moisture ratio for how a part, mechanism, or assembly will be used. The conditions of the testing vary depending on the specified environment. The specific regulation regarding humidity is MIL-STD 810 G, which applies to materials that will be deployed in warm or humid environments.