just fyi, sonofresco roasters use a 2 wire 1000 ohm platinum rtd.
I've never used RTDs; why would you use one instead of a thermocouple? And why are all the RTDs I see at http://omega.com 3-wire?
3 wire RTDs compensate for the resistance of the lead wires. if the sonofresco board could accept a 3 wire RTD it would be more accurate, unfortunately the board expects a 2 wire RTD.
RTDs do not require calibration at different altitudes and put out a linear resistance as opposed to thermocouples s-shaped resistance curve.
Thermocouples also drift with time, while RTDs put out the same resistances over their entire lifespan.
As far as an omega rtd that works with the sonofresco, I know that the
RTD-870-1000 OHMS will work, as I modded my sonofresco 1 lb model to use that probe. (drilled a small hole for the probe in the exhaust tube and plugged up the other hole with metal duct tape)