National Physical Laboratory

Avoiding errors in temperature measurement

Error

The process of measuring temperature - insert the sensing probe and take a reading - could not in principle be simpler, but in practice there are many reasons why the reading may not be correct. The following are some basic points to consider: 

  • does the probe make proper contact?
  • can the sensor stand up to the environment?
  • has the thermometer been calibrated?
  • what are the industrial specifications and standards?

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