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Benefits and drawbacks of thermocouple thermometers

Thermocouple thermometers measure temperatures by measuring the voltage induced as a result of temperature differences.

The advantages of thermocouple thermometers are that they:

  • can be used to measure high temperatures because metals have high melting points,
  • respond very quickly to temperature changes because metals have high conductivities and
  • are sensitive to very small changes in temperature.

The main disadvantage of a thermocouple thermometer is that it is less accurate than a mercury thermometer.

A thermocouple thermometer
A thermocouple thermometer