Hi there. Not sure what calibration you’re referring to… but for RTDs there is only one calibration - it’s the reference resistor value. Usually it’s 430 or 400 ohms for Pt100 probes.
If you find those temperature results are inaccurate compared to a “gold standard”thermometer reading, you can add additional calibrations such as offset, multiplier, or lookup table. They are processed in order, so if you add an offset, then a multiplier, you’ll get different results than if you add a multiplier then an offset (recommended).
That said,to do it right, one should take readings along the whole range, starting with zero (ice slush bath). Record probe temp vs. gold temp all the way up to boiling. Then either enter data table entries for each, or load those values into a spreadsheetand do a regression. I think the data table is much easier, and it feels like this is an underutilized tool in BC.
