PT100 / PT1000 RTD Callendar-Van Dusen, 3-Wire Lead Unbalance & Self-Heating Solver

Deterministic IEC 60751 Callendar-Van Dusen quartic (<0°C) / quadratic (>0°C) root-finder + Wheatstone/IDAC 3-wire lead-cancellation residual & Joule self-heating I^2*R / K_dissipation engine (.json, .csv, .c, .h) built for Analog Devices, Texas Instruments (ADS124S08), JUMO, WIKA — zero-upload ephemeral Wasm RAM execution.

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