Temperature Sensors - Comparing Types

Comparing advantages and disadvantages of thermocouples, RTDs and thermistors temperature sensors

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Attribute Thermocouple RTD Thermistor
Cost Low High Low
Temperature Range Very wide
-450oF
+420oF
Wide
-400oF
+1200oF
Short to medium
-100oF
+500oF
Interchange ability Good Excellent Poor to fair
Long-term Stability Poor to fair Good Poor
Accuracy Medium High Medium
Repeatability Poor to fair Excellent Fair to good
Sensitivity (output) Low Medium Very high
Response Medium to fast Medium Medium to fast
Linearity Fair Good Poor
Self Heating No Very low to low High
Point (end) Sensitive Excellent Fair Good
Lead Effect High Medium Low
Size/Packaging Small to large Medium to small Small to medium

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Related Topics

Related Documents

  • Temperature A short introduction to temperature - including Celsius, Fahrenheit, Kelvin and Rankine definitions - online temperature converter
  • Thermocouples Thermocouples - types, principles and temperature ranges
  • RTD - The Thermal Resistive Sensor What is a thermal resistive sensor? - and how does it work?

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