High and low temperature low pressure test the relationship between altitude and pressure
Altitude Test Chamber is applied to, high altitude such as the sky, mountains and other environments, low altitude is applied to low latitude, under water and other environments, there are many environments in the world, such as southern level, northern level, there are also very high mountains, deserts, etc., but where there are humans have been, there will be necessary supplies for life, such as cell phones, radio, etc., so each product will not say get to the top of Mount Everest to test, is completely unrealistic. We will move the experiment to the laboratory, such as I am now in the Alps, 4500 meters above sea level, then our test chamber should be relatively about 60KPA, the machine set pressure and altitude corresponding to. Relative to the pressure, the reality of the environment there are more such as temperature and humidity, light and other environments so integrated.
Altitude Test Chamber In the test chamber should be able to maintain the air pressure in Table 1, the tolerance of ± 5% or ± 0.1kPa (take the maximum value), the tolerance of ± 2kPa when the severity level is 84kPa.
Air pressure test severity level
Pneumatic pressure |
|
Approximate altitude/ m |
kPa |
Mbar |
m |
1 |
10 |
31200 |
2 |
20 |
26600 |
4 |
40 |
22100 |
8 |
80 |
17600 |
15 |
150 |
13600 |
25 |
250 |
10400 |
40 |
400 |
7200 |
55 |
550 |
4850 |
70 |
700 |
3000 |
84 |
840 |
见注1、注2 |
Note 1: Standard atmospheric conditions from 85kPa ~ 100kPa cover altitudes up to 1000m above sea level. |
||
Note 2: The severity level of 84kPa is applicable to the tests required to be performed on samples at the lower limit of standard atmospheric conditions. |