Built-in sensor modules

Public built-in modules:

from rtd_sensor import ni1000, ni1000_tk5000, ni120, pt100, pt500, pt1000

Each exposes:

R0_OHMS
MIN_TEMPERATURE_C
MAX_TEMPERATURE_C
celsius_to_resistance(temperature_c: float) -> float
resistance_to_celsius(resistance_ohms: float) -> float
resistance_sensitivity_ohms_per_celsius(temperature_c: float) -> float
temperature_sensitivity_celsius_per_ohm(temperature_c: float) -> float

Version history

The Pt100 and Pt1000 APIs predate the 0.4.0 project/package rename. The table therefore distinguishes original project availability from the current rtd_sensor import path.

Module	Conversion/constants introduced	Sensitivity API introduced	Current `rtd_sensor` module since
`pt100`	0.1.0 (`pt100-core`)	0.3.0 (`pt100-core`)	0.4.0
`pt1000`	0.2.0 (`pt100-core`)	0.3.0 (`pt100-core`)	0.4.0
`pt500`	0.4.0	0.4.0	0.4.0
`ni1000`	0.4.0	0.4.0	0.4.0
`ni1000_tk5000`	0.4.0	0.4.0	0.4.0
`ni120`	0.4.0	0.4.0	0.4.0

The conversion/constants column covers R0_OHMS, the minimum/maximum constants, celsius_to_resistance(), and resistance_to_celsius(). The sensitivity column covers both local sensitivity functions.

Built-in ranges

Module	R0	Range
`pt100`	100 Ω	-200..850 °C
`pt500`	500 Ω	-200..850 °C
`pt1000`	1000 Ω	-200..850 °C
`ni1000`	1000 Ω	-60..250 °C
`ni1000_tk5000`	1000 Ω	-60..250 °C
`ni120`	120 Ω	-80..260 °C

Minimal example:

from rtd_sensor import pt100

t = pt100.resistance_to_celsius(119.3971)
r = pt100.celsius_to_resistance(50.0)

Out-of-range conversions raise RTDOutOfRangeError. Non-finite or invalid scalar values may raise ValueError or TypeError.

See Built-in RTDs for full details.