Posted by:
markg
at Wed Mar 25 13:29:17 2009 [ Email Message ] [ Show All Posts by markg ]
One possibility is where you have the probe attached to the Flexwatt. If that area rests snuggly against a thermal mass (something that absorbs the heat) then the temp at that one spot will be lower than the temp elsewhere. I've seen this happen too. Plus, paper is an insulator, so heat gets trapped under paper towels and builds up, as opposed to having ceramic tile which absorbs alot of heat, or glass which conducts it to the substrate (unless the substrate is paper or wood shavings, then it builds up and the glass gets way hot.)
In the end, the most direct method is to have the controller probe in the box exactly where you want a certain temperature to be. I often used one slot in a rack for just that purpose. Anything else becomes guesswork unless the rack is well insulated and enclosed.
BTW, these issues are why I use radiant heat panels in many cages. And where I do use Flexwatt or UTH, I use a substrate like pebbles or course sand or ceramic tile. This is for discrete cages.
-----
Mark
[ Hide Replies ]
|
RE: Advise/help adjusting T-Stat for tubs - markg, Wed Mar 25 13:29:17 2009