After starting a new job, I immediately noticed that the server room's humidity seemed all out of wack. The room is 12'w x 25'l - drop ceiling tiles w/ hard wall to roof. The room also has anti static floor tiles. There are two telco racks with patch panels and 6 switches. One full rack containing 2 APC 3000's , 6 Dell servers ( all R610's and 710's. ) and a Dell SAN. I'm told the room has a dedicated AC unit - just not sure how big ( tons ). The thermostat is set to 68. Typically, the temp in the room will rise to 72, the AC kicks and starts cool and the room returns to 67/68. I'm OK with that. The issue that caught my attention is that there were times that I went in there and it felt like a jungle. My body was telling me that it was at least 80% humid. I ordered a APC sensor ( AP9335TH ) the the UPS. After one day, the data tells me the following:
Humidity Low Point = 35% RH
Humidity High Point = 72 % RH
Now, I'm not overly concerned with the % but what I am concerned is that the humidity fluctuates from low to high almost 4 times per HOUR.
So. Should I trust this APC sensor? and should I be concerned with the rate of change in Humidity?
Any help/info would be grateful.