| Thermocouple |
- No resistance leadwire problems
- Fastest response
- Simple, rugged
- Inexpensive
- High temperature operation
- Point temperature sensing
|
- Non-linear
- Low voltage
- Least stable, repeatable
- Least sensitive
|
| RTD |
- Most stable, accurate
- Contamination resistant
- More linear than thermocouple
- Area temperature sensing
- Most repeatable temperature measurement
|
- Current source required
- Self-heating
- Slow response time
- Low sensitivity to small temperature changes
|
| Thermistor |
- High output, fast
- Two-wire ohms measurement
- Economic
- Point temperature sensing
|
- Non-linear
- Limited range
- Fragile
- Current source required
- Self heating
|
