Sensor Linearization (RTD/NTC/TC)

Convert resistance or voltage to temperature (PT100/PT1000, NTC, thermocouple).

READY

sensor_linearization_rtdntctc.tool

READY

Sensor type

Direction

→ TemperatureTemperature →

Input value [Ω]

Result [°C]

100.01 °C

// HOW IT WORKS

Many sensors have a non-linear characteristic curve. Using support points (value pairs), the tool interpolates piecewise-linearly to derive the correct measurement from the raw signal.

Formula (interpolation)

y = y0 + (x - x0) * (y1 - y0) / (x1 - x0)

Example

Support points (0→0), (10→25), (20→100): input 15 lies in segment 10–20 → y = 25 + (15-10)*(100-25)/(20-10) = 62.5.

Notes

Support points must be sorted ascending by x.
Outside the range the value is extrapolated — be careful near sensor limits.