Platinum Resistance Calculator

Enter three temperature-resistance data sets to fit formula parameters C1, C2, C3

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Data Input

Calculation Results

IEC 60751 Standard Parameters

R = R0 × (1 + A×t + B×t² + C×(t-100)×t³)

R0 (0℃阻值)1000 Ω
A (= C1×10³)3.9083
B (= C2×10⁷)-5.775
C (= C3×10¹²)-4.183
Note: IEC 60751 standard parameters: A = 3.9083×10³, B = -5.775×10⁻⁷, C = -4.183×10¹². For T≥0°C solve quadratic equation, for T<0°C use Newton iteration method. R0 is the nominal resistance at 0°C (PT100=100Ω, PT500=500Ω, PT1000=1000Ω).