Discussion: Types and Selection of Resistance Temperature Detectors (RTDs)


RTDs are more accurate and reliable than thermocouples. You should  also understand that RTD’s sensing element is a resistor that changes  resistance with temperature and it is connected to the control circuitry  through a wire.

Answer the following:

  • In order to select the suitable detector, what materials should be used as sensing elements and wire materials for RTDs?
  • How are thermocouples types and temperature ranges involved?

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