Thermocouple |
Resistance Thermometer (RTD) |
Thermistor |
Infrared |
|
Accuracy |
Less
Accurate |
More
Accurate |
Less
Accurate |
Less
Accurate |
Temperature Range |
-250 °C to +2600 °C |
-200 °C to +850 °C |
-60 °C to 300 °C |
-50 °C to 3000 °C |
Stability (Drift) |
Reasonable
for limited lifetime |
Good |
Good |
Good |
Repeatability |
Reasonable |
Good |
Good |
Good |
Hysteresis |
Excellent |
Good |
Good |
Good |
Vibration |
Very
Resistant |
Less
Resistant |
Good |
Tolerant |
Measurement Area |
Single
Point |
Whole
RT Element |
Whole
bead (Small) |
Varies |
Diameter |
Small
Sizes (to 0.25mm) |
Larger
(3.0mm min) |
Small
(0.5mm min) |
Varies |
Linearity |
Not
Linear |
Linear |
Not
Linear |
Reasonably
Linear |
Reference Junction |
Required |
Not
Required |
Not
Required |
Not
Required |
Lead Wire Resistance |
No
Problem |
Must
be Considered |
No
Problem |
Not
Required |
Contact Required |
Yes |
Yes |
Yes |
No |
Response |
Fast |
Slower |
Medium |
Fast |
If you are still unsure which type of temperature measurement system you require do not hesitate to contact us.
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