PV module temp [RE-wrenches]

[Travis Creswell, Ozark Solar]

Hey Gang,

I have hooked up a Heliotrope Quadra Temp four channel temp monitor that
uses 10k sensors.  One of the channels is monitoring temp on the back of a
module in my roof mounted PV array.  I'm seeing temps of nearly 140 F on
sunny days that the ambient temp doesn't get past 80 F.  That seems pretty
high.  The sensor is fine as it reads ambient temp accurately after sunset
plus I checked it before I installed it.  I siliconed the sensor along with
a small piece of Armaflex insulation on the back approximately in the center
of the module.

I insulated it so the temp would be more accurate but now I am wondering if
I'm not holding heat in with the insulation causing the temp to be too high?
 But if I don't insulate it won't it read too cool?

Suggestions?

Thanks in advance.

Travis Creswell
Ozark Solar

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