Temperature Instruments

Learning objectives

  • Describe and give examples of the following types of temperature measuring devices:
    • Thermal Expansion Thermometers
    • Electrical Thermometers
    • Infrared Radiation Thermometers
  • Explain the operation of a resistance temperature detector (RTD) and bridge circuit
  • Describe how to properly connect a 2-wire or 3-wire RTD to a temperature transmitter
  • Describe how temperature is measured using a thermocouple
  • Explain thermocouple compensation and the effect of wires and junctions on accurate temperature measurement
  • Describe distance-to-size ratio in an infrared radiation thermometer
  • Explain emissivity in relation to an infrared radiation thermometer

Course overview

When you complete this lesson, you will be able to identify various temperature measuring and sensing devices, and describe their operation. Identify types of thermometers and discuss the principles behind their operation

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