When using platinum resistance thermometers (PRTs) for temperature measurement, a variety of errors that affect accuracy can occur. An error is the difference between the temperature indicated by the sensor and the true value of the temperature. Understanding and recognizing these errors can help correct the problem. The most common errors are:
  • Calibration.
  • Interpolation.
  • Repeatability.
  • Stability.
  • Hysteresis.
  • Interchangeability.
  • Time response.
  • Self heating.
  • Conduction.
  • Lead resistance.
To review a PDF presentation with detailed information on a variety of errors, along with methods to minimize them, visit the Technical Papers section of Burns Engineering's web site.