Hey all,

Recently I've built a humidity chamber to test my humidity sensor. I'm very
sure that my chamber that made of mild steel is free of leakage. The
relative humidity (RH%) inside the chamber is monitored by a hygrometer. The
various humidity values inside the chamber is produced by flowing the dry
and wet nitrogen gas. My problem is when the relative humidity decreased to
a value let say 30%RH, this value can not be maintained for a long time. It
will increase gradually to the room humidity value. Can someone help me to
solve my problem?

Idris Sabtu
Research Assistant
National University of Malaysia

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