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Compare following temperature transducers with respect to their characteristics, measurement range, applications:RTD, Thermocouple and Thermistors
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written 3.5 years ago by | modified 3.3 years ago by |
Parameters | Thermocouple | RTD | Thermistor |
---|---|---|---|
Cost | Low | High | Low |
Measurement 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 |
Applications | Steel industry, thermoelectric cooling | Surface mount sensors and Immersion sensor | Current limiting device, degaussing coil |