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
