Comparison of Thermocouple and RTD

message: what is the pros and cons of rtd,over thermocouple

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Read the pages in links below, that ought to clarify your doubts. Last edited February 16, 2007

RTD-TC-Compare
Comparison of Thermistors, Thermocouples and RTD’s … Unlike RTD’s and thermistors thermocouples have plus and minus legs so polarity must be observed.
Comparision of Thermistors, Thermocouples and RTD’s

Thermocouple – No resistance lead wire problems, Fastest response;  RTD – Most stable, accurate, Contamination resistant,; Thermistor – High output, fast, Point temperature sensing.
Watlow – Temperature Sensor Comparison Guide

Since thermocouples measure wide temperature ranges and are relatively rugged, they are very often used industrial and process applications where accuracy may be a less important factor.
RTD vs. Thermocouple comparison chart

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