RTD vs Thermistor|Comparison between RTD and Thermistor

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RTD vs Thermistor Comparison between RTD and Thermistor


RTD vs Thermistor: RTD is Resistance Temperature Director, and Thermistor is Thermal Resistor. The comparison between RTD and thermistor is given in the Table given below.

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Read: What is a Thermistor?

Comparison between RTD and thermistor

Difference between RTD and Thermistors are given in the table below

RTDThermistor
It is made up of metals.Thermistor is made up of semiconductor
materials.
Since metals have a positive temperature coefficient
(PTC) of resistance, its resistance is directly proportional
to temperature		Since semiconductor materials have a negative temperature coefficient (NTC) of resistance, it’s resistance is inversely proportional to temperature.
Has linear resistance temperature characteristicsHas non-linear resistance temperature characteristics
Less sensitive to temperatureHighly sensitive to temperature.
Has wide operating range i.e., –200°C to 650°CHas a narrow operating range i.e., –100°C to 300°C
Larger in sizeSmaller in size.
Costlier when compared to a thermistor.Cheaper when compared to RTD
Has low self-resistance.Has high self-resistance.
Provides high degree of accuracy and long-term stability. Provides an accuracy of ± 0.01°C.
Used in laboratory and industrial applicationsUsed in dynamic temperature measurement
RTD vs Thermistor

Read Also: Transducer Types, Parts, Working, Applications with Examples

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