USB-TEMP thermistor measurement accuracy above 120 °C

[Gwen]

In the User's Guide, the accuracy data for thermistor measurement is only up to 120°C. I need to measure temperature up to 250 °C with a 30 kOhm thermistor (-55 to +300). What's the accuracy for thermistor measurement 120 to 300 °C?

[DAQman]

The Steinhart–Hart linear approximation used by the USB-TEMP is accurate only over a limited range. Measuring temperatures above 120 degrees C is not recommended or supported.