Why Use a Standard Platinum Resistance Thermometer (SPRT)?
Temperature Measurement and Calibration Standards
• IPRT: Standard for temperature measurement and calibration with 100 Ohms resistance at 0°C.
• PRTs use coil type temperature sensors suitable for different temperature ranges.
• IPRTs can calibrate with uncertainties of 0.01 °C at 0°C and 0.05 °C at 660 °C, but not lower than 0.01 °C due to sensing element limitations.
• SPRTs: Can calibrate to lower uncertainties than IPRTs, with Primary SPRTs calibrating to 0.0001 °C at 0°C and 0.002 °C at 660 °C.
• Eurocaltech offers high accuracy precision thermometers with a one-year accuracy of 0.004 °C at 0 °C and 0.007 °C at 660 °C.