`rtd_sensor.models`

Some configurable model classes predate the 0.4.0 rename from pt100-core / rtd to rtd-sensor / rtd_sensor. Those entries show both dates.

`RTDModel`

Introduced in: rtd-sensor 0.5.0

Structural protocol requiring:

celsius_to_resistance(temperature_c) -> float
resistance_to_celsius(resistance_ohms) -> float
resistance_sensitivity_ohms_per_celsius(temperature_c) -> float
temperature_sensitivity_celsius_per_ohm(temperature_c) -> float

`IEC60751RTDModel`

Introduced in: project release 0.3.0 (pt100-core); available as rtd_sensor.models.IEC60751RTDModel since rtd-sensor 0.4.0.

IEC60751RTDModel(
    r0_ohms: float,
    name: str = "IEC 60751 RTD",
    minimum_temperature_c: float = -200.0,
    maximum_temperature_c: float = 850.0,
)

`CallendarVanDusenRTDModel`

Introduced in: project release 0.3.0 (pt100-core); available as rtd_sensor.models.CallendarVanDusenRTDModel since rtd-sensor 0.4.0.

CallendarVanDusenRTDModel(
    *,
    r0_ohms: float,
    a: float,
    b: float,
    minimum_temperature_c: float,
    maximum_temperature_c: float,
    c: float | None = None,
    name: str = "Custom Callendar-Van Dusen RTD",
    coefficient_source: str | None = None,
)

`PolynomialRTDModel`

Introduced in: rtd-sensor 0.4.0

PolynomialRTDModel(
    *,
    reference_resistance_ohms: float,
    coefficients: Sequence[float],
    minimum_temperature_c: float,
    maximum_temperature_c: float,
    reference_temperature_c: float = 0.0,
    name: str = "Polynomial RTD",
    coefficient_source: str | None = None,
)

`PiecewisePolynomialSegment`

Introduced in: rtd-sensor 0.4.0

PiecewisePolynomialSegment(
    *,
    minimum_temperature_c: float,
    maximum_temperature_c: float,
    coefficients: Sequence[float],
    temperature_origin_c: float = 0.0,
)

`PiecewisePolynomialRTDModel`

Introduced in: rtd-sensor 0.4.0

PiecewisePolynomialRTDModel(
    *,
    reference_resistance_ohms: float,
    segments: Sequence[PiecewisePolynomialSegment],
    reference_temperature_c: float = 0.0,
    name: str = "Piecewise polynomial RTD",
    coefficient_source: str | None = None,
    maximum_continuity_adjustment_ratio: float = 0.0,
)

`TabulatedRTDPoint`

Introduced in: rtd-sensor 0.5.0

TabulatedRTDPoint(*, temperature_c: float, resistance_ohms: float)

`TabulatedRTDModel`

Introduced in: rtd-sensor 0.5.0

TabulatedRTDModel(
    *,
    points: Sequence[TabulatedRTDPoint],
    name: str = "Tabulated RTD",
    table_source: str | None = None,
    source_precision: str | None = None,
)

All concrete model classes provide the four RTDModel numerical methods.

See Custom & calibrated models.