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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 -350oF +3200oF |
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
- Process Control - Instrumentation and process control systems - engineering and documentation
- Temperature Measurement - Measurement of temperature - probes, sensors and transmitters
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Related Documents
- RTD - The Thermal Resistive Sensor - What is a thermal resistive sensor? - and how does it work?
- Temperature - A short introduction to temperature - including Celsius, Fahrenheit, Kelvin and Rankine definitions - online temperature converter
- Thermocouples - Thermocouples - types, principles and temperature ranges
