Posted by:
markg
at Mon Nov 8 03:49:15 2004 [ Email Message ] [ Show All Posts by markg ]
For non-light-emiiting heaters (heat pads, Flexwatt, heat panels, ceramic bulbs), proportional controllers offer the best control with the least temp cycling, and will maintain that control even when the ambient room air temp changes. You must be sure to fix the sensor to the heated area so that it doesn't come off accidently.
You can't boost the power-rating of the controllers that are sold as one unit. Helix has a boost module for its controller that is sold as 2 pieces (controller "brains" and a separate solid-state relay power module.)
Are they worth the money? Yes. Get one and you'll see. No more worries with setting and holding correct temps. Welcome to 2004.
ON/OFF controllers are best for high-limit cutoff or else for lights, and work best when your cage or room is reasonably well-insulated. Traditionally, ON/OFF control is used when you can't use proportional e.g. heaters or coolers with fans and motors and moving parts that can only be ON or OFF (no inbetween like proportional), or else for inexpensive control in well-insulated scenarios like ovens. That is why your house A/C and heating uses ON/OFF control.
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Mark G
Collection:
Beautiful San Felipe rosies
Some CA rosies
Some Ariz mtn kings
No more triangulum or getula.
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RE: Proportional Thermostat vs the normal thermostat - markg, Mon Nov 8 03:49:15 2004