Low-pressure (altitude) chamber tests are performed to determine if the hardware can withstand and operate in a low-pressure environment and withstand rapid pressure changes. Examples of some problems that could occur as a result of exposure to reduced pressure include:
- Rupture or explosion of sealed containers
- Change in physical and chemical properties of low-density hardware
- Erratic operation or malfunction of equipment resulting from arcing or corona
- Overheating of equipment due to reduced heat transfer
- Failure of hermetic seals
Trimble Kenai®, Yuma® 2, Nomad® 1050, Juno® T41 and Ranger™ 3 are tested at 4,572 meters (15,000 feet) at 73° F (23° C). Decompression is performed at 2,000 feet per minute to 40,000 feet at -30° C (-22° F) using Method 500.4 Procedures I, II, II.