Andreas has a good thread on EEVblog http://www.eevblog.com/forum/projects/t-c-measurements-on-precision-resistors/
I am guessing that you want to calculate the alpha and beta coefficients over a certain temperature range? I am also interested in doing something similar, having collected different bits of gear. I already have the modified box and peltier controller. The temperature chamber will be similar to what Joe Geller used for his references. http://www.gellerlabs.com/SVR_TempcoTest.htm I do not know of any company or person that offers this service. It would certainly make a good volt-nut project. Todd On Fri, Nov 14, 2014 at 5:36 PM, Richard Moore <richiem5...@gmail.com> wrote: > I’ve built a little box with two 10kohm precision resistor assemblies, > using Fluke resistors — one ass’y is two 20k managing wire on shellacked > mica cards in parallel, and the other is made of eight 5k wire wounds in > sealed green plastic cases in series/parallel. These are not exactly 10k > ohms each, but are about 30ppm (high) for the mica card, and 20ppm (low) > for the green plastics, according to my HP 3458A. > > I would like to get them accurately characterized, but never having done > this, I don’t know who to have do it or how much it would cost. Any ideas > or suggestions? They can be shipped anywhere cheaply as the box is small, > light, and very durable. > > TIA > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.