I think he is looking for around 0.5 degree accuracy, or still trying to fi= gure that out himself as well. --- On Tue, 10/19/10, Marc Nicholas wrote: > From: Marc Nicholas > Subject: Re: [EE] Thermocouple probes > To: "Microcontroller discussion list - Public." > Date: Tuesday, October 19, 2010, 1:20 PM > On Tue, Oct 19, 2010 at 3:17 PM, alan > smith > wrote: > > thanks for the responses...i've forwarded these sites > to my client for his review. =A0When you said you have had > better luck with RTD's over thermocouples, can you explain > what your experiences were? =A0RTD's are generally less > expensive, but are they as stable as a thermocouple? >=20 > I just temperature compensated my RTD and was able to > achieve decent > resolution and accuracy with a simple voltage divider. My > application > was also food services (prototype cooking machine). >=20 > There are also differential AtoD reference designs for > RTDs, but I > didn't find that beneficial in my application. >=20 > How accurate do you need the probe to be? I'd be surprised > to hear of > anything requiring accuracy of more than 0.2c in the food > service > industry. >=20 > -marc >=20 > --=20 > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist >=20 =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .