Thermistors are similar to RTD’s in that they are devices whose resistance changes with temperature, but the resistance change is highly non-linear. Because of this characteristic, thermistors can offer very accurate temperature measurements, down to an accuracy of 0.01°C, but only over a very limited temperature range typically -40°C to 150°C. Like RTD’s, thermistors are designed to have a specific resistance at 0°C, 2252 Ω is a common value and each family of thermistors have a specific resistance vs temperature characteristic that the data logger must be able to accommodate.
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