ITS90 CVD RTD Calculator app for iPhone and iPad

A handy app for calculating resistance to temperature and temperature to resistance with Platinum RTDs (Resistance Temperature Detector). Choose from either ITS-90 (International Temperature Scale of 1990) or CVD / (Callendar–Van Dusen) calculation.

Use the default coefficients or use your own if you have a calibrated device. ITS-90 requires your RTD probe resistance at the Triple Point of Water and calibration coefficients. ITS-90 temperature input is limited to -189°C to 660°C. CVD calculation allows you to use standard or custom ice point / 0°C resistance values and either standard or custom coefficients. CVD temperature input is limited to -200°C to 850°C

Supports a multitude of sensors including IEC 751, Industrial, Standard, Reference, and Secondary Reference probes/sensors.