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Proportional thermostat accurate or not?

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Posted by: Omnivorous at Thu Jan 8 05:33:46 2009   [ Email Message ] [ Show All Posts by Omnivorous ]  
   

I have a proportional thermostat. I had heard that proportional thermostats were suposed to keep the temps within 1 degree or better accuracy but I have found mine keeps the temps within 2 or 2.5 degress accuracy. Is this normal? The temps drop mabie 1 degrees below set temp and 2 to 2.5 degrees above. Usualy the temps are within a degree of setpoint or exactly on setpoint but these differences are the extreme cases max/min. Do I have a unacurate thermostat or are these variations to be expected? Would that temp difference be bad for reptile eggs? The variations in temp are not held for long usualy bounces back to correct temp quickly. Its a lot more accurate than the on/off type I used to have but was wondering if its an accurate unit the on/off type had agreater difference in temps. Mostly concerned if it will be bad for reptile eggs?

   

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