"*correction in hardware" is my notation for a goofy calibration scheme
I have a ref Pt392 caled in 10° increments for which I have a curve, so I understand actual;
in a bath I then 'cal' the working sensor at its actual use temp (or midpoint) - a trim resistor for each RTD input; connected to the separately caled inst that will read it
I need to re-cal over a curve for each one
bleh, this is a lot of work
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