CIE A Level Physics (9702) 2019-2021

Revision Notes

17.1.5 Thermistors and Thermocouples

Thermistors & Thermocouples

  • Thermistors and thermocouple thermometers are sensors used to measure temperature
  • Advantages of a thermistor:
    • It is very robust ie. strong and doesn’t easily break
    • Highly sensitive over a narrow range of temperatures
  • Disadvantages of a thermistor:
    • Only a narrow range of temperatures can be read
    • Difficult to get accurate readings
    • Non-linear readings
  • Advantages of a thermocouple thermometer:
    • It is robust ie. strong and doesn’t easily break
    • Can detect a wide range of temperatures
    • Very accurate readings
    • Small in size
    • Low thermal capacity, therefore, quicker acting and can measure the temperature at any point
    • Long conducting wires allow the operator to be at a distance from the thermocouple
  • Disadvantages of a thermocouple thermometer:
    • Non-linear readings mean they require calibration

Author: Katie

Katie has always been passionate about the sciences, and completed a degree in Astrophysics at Sheffield University. She decided that she wanted to inspire other young people, so moved to Bristol to complete a PGCE in Secondary Science. She particularly loves creating fun and absorbing materials to help students achieve their exam potential.

Join Save My Exams

Download all our Revision Notes as PDFs

Try a Free Sample of our revision notes as a printable PDF.

Join Now
Already a member?
Go to Top