v1.1 (AI Audited, 28/7/2025). Confirm suitability before use.

About This Calculator

This calculator determines temperature sensitivity coefficients for Standard Platinum Resistance Thermometers (SPRTs) using the official ITS-90 reference function. Enter your SPRT’s nominal resistance at the water triple point (0.01°C), the temperature of interest, and optionally a resistance change to calculate the corresponding temperature change.

Common values: 10Ω, 25.5Ω, 100Ω

Valid range: -189°C to +660.323°C

Enter a resistance change to calculate corresponding ΔT