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Thread: CU-50 RTD resistance chart?
www.piclist.com/techref/index.htm?key=rtd+resistance+chart
picon face BY : speff@interlog.com email (remove spam text)



Quoting William Couture <RemoveMEbcouturespamspamBeGonegmail.com>:

> 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

They're all real- it's just that there is no international standard  for Cu RTDs that I know of. You have not mentioned why you want this-  obviously if you are buying the sensor you are going to want to go to  the manufacturer for the data. If you are trying to make a general  purpose indicator or controller.. you might want to use this (assuming  the reference temperature of 25 C is appropriate..)

http://www.pyromation.com/Downloads/Data/427_c.pdf

Again, scale the numbers appropriately (5:1 in this case). Anything that's
within a degree or two C at the extremes is probably better than the sensor
interchangeability.

Where exactly did you run into a 50 ohm copper RTD?

--sp

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