IQS Newsroom Articles on Humidity Test Chambers
Humidity Test Chambers
Humidity Chambers are testing areas able to simulate a variety of humidity conditions in order to test the effects of humidity on an object. Humidity chambers help engineers evaluate the effects that humidity changes have on products placed within the chamber. Although humidity chambers have many applications, they are used most often for specific testing in industrial and biotechnology applications.
Absolute humidity is defined as the amount of water vapor, or moisture, in a unit of air. Relative humidity, in contrast, is the ratio of the current amount of water vapor in a given unit of air at a given temperature to the greatest amount of water vapor the unit of air could hold at that temperature (its saturation humidity). Engineers use these measures to control the humidity levels in humidity chambers at particular intervals.
A common form of testing used in humidity test chambers is the temperature-humidity-bias (THB) test. The THB test measures product reliability test by subjecting an object to high humidity at a constant temperature. Although the THB test provides useful information, the test time it requires greatly exceeds that of HAST, in which an object is subjected to high temperature, humidity and pressure all at the same time.