Idris

Pull a vacuum on your chamber, then if no leak is detected, put it under a
few (5) lbs. of pressure and let it stand, I'm sure you will find that it
leaks in one of these modes.

Vic

----- Original Message -----
From: "Idris Sabtu" 
To: 
Sent: Friday, December 12, 2003 9:40 PM
Subject: [mems-talk] Humidity Chamber


>
> 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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