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Built-in RTDs

rtd-sensor includes six verified built-in RTD models. Each provides temperature-to-resistance conversion, resistance-to-temperature conversion, and both local sensitivity directions.

Module Characteristic R0 Range
pt100 IEC 60751 PT-385 platinum 100 Ω -200 to 850 °C
pt500 IEC 60751 PT-385 platinum 500 Ω -200 to 850 °C
pt1000 IEC 60751 PT-385 platinum 1000 Ω -200 to 850 °C
ni1000 former DIN 43760 / Nickel ND 1000 Ω -60 to 250 °C
ni1000_tk5000 Nickel NL 5000 ppm/K 1000 Ω -60 to 250 °C
ni120 North American / Minco NA 120 Ω -80 to 260 °C

Choose the sensor page that matches the documented characteristic of your physical RTD:

Nominal resistance is not enough

ni1000 and ni1000_tk5000 both have 1000 Ω nominal resistance at 0 °C, but they use different nickel characteristics. A Pt1000 is different from both. Identify the characteristic from the sensor's documentation.