Both those charts have different thermal coefficients, and have different "zero" scales -- the 10R is 10R at 25C, the 100R is 100R at 0C. the 10R chart multiplied by 5.5356 is closer, but it's strange that a real chart can't be found anywhere... Bill On Fri, Sep 8, 2017 at 10:15 PM, wrote: > Quoting William Couture : > > > Or possibly [OT] -- maybe I'm searching with the correct terms, but I'm > > trying to find > > an resistance chart for a CU-50 RTD probe. > > > > The best I've been able to come up with is this image, which isn't quit= e > > readable: > > > > https://is.alicdn.com/img/pb/747/046/531/531046747_904.jpg > > > > Pointers to something better? > > > > Thanks! > > Bill > > > > http://www.thermometricscorp.com/PDFs/10_ohm_copper_rtd-0.00427_in_C.PDF > > Multiply numbers by 5. > > OR > > http://www.thermometricscorp.com/images/Accessories/ > thermometricscorp_2129_12162627.gif > > Halve these numbers. > > depending on whether it's 50R at 0 degrees C or at 25 degrees C. > > There may be others based on 75F or something. > > Copper RTDs are all over place in terms of the quoted resistance (and > therefore the tempco) when you get down to the last decimal place or > two, AFAIK there is no standard. > > One of the main applications would be homemade with a bit of wire left ov= er > from winding the motor, so annealing and exact composition would be > questionable. > > --sp > > > > > > > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 Psst... Hey, you... Buddy... Want a kitten? straycatblues.petfinder.org --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .