Field Pocket Guide

RTD Tables

Platinum RTDs to IEC 60751, the 0.00385 curve. Resistance against temperature by the Callendar-Van Dusen equation, so the table is generated, not looked up and rounded. Convert a single reading either way, or build a table at any interval.

Sensor

Convert

Temperature (°C)

Resistance

—Ω

Reference table

From (°C)

To (°C)

Step (°C)

°C	Ω	°C	Ω

Valid −200 to 850 °C (IEC 60751). Below 0 °C the equation adds the C·(t−100)·t³ term.