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Mon Aug 11 00:58:31 2008, rana, Update, PEM, 2 years of temperature trend
Mon Aug 11 09:39:29 2008, rana, Update, PEM, 2 years of temperature trend
Mon Aug 11 00:58:31 2008
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2 years of temperature trend
The PSL RMTEMP alarmed again because it says the room temperature is 19.5 C. Steve said in
an earlier log entry that this is a false alarm but he didn't say why he thought so...
I say that either the calibration of the RMTEMP channel has drifted, the setpoint of the HVAC
has shifted, or there's a drift in the RMTEMP channel. I don't know what electronics exactly
are used for this channel so not sure if its susceptible to so much drift.
the Dust Monitor (count_temp) shows a similar temperature decline
last two years I am inclined to blame
the HVAC system
The attached plot shows 2 years of hour-mean trend.
Uploaded Mon Aug 11 02:09:40 2008