Page 22 - Instrumentation and Measurement
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2.13 Thermistor resistance to temperature characteristics
FIGURE 2.14 Thermistors: (A) rod with temperature for thermistors (B) disc, (C) bead.
2.3.2.3 Thermocouples
Thermocouples are formed when two dissimilar metals are joined together to form a junction. An
electrical circuit is completed by joining the other ends of the dissimilar metals together to form a
second junction. A current will flow in the circuit if the two junctions are at different temperatures
as shown in Fig. 2.15.
Figure 2.15 A thermocouple circuit,
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