What is rtdand thermocouple

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RTD and thermocouple are types of temperature sensors used in various industries.

RTD stands for Resistance Temperature Detector and uses the principle of change in electrical resistance with temperature to measure temperature.
Thermocouple uses the principle of Seebeck effect where a voltage is generated when two dissimilar metals are joined at two junctions and exposed to different temperatures.
RTD is more accurate and stable than thermocouple but has a limited temperature range.
Thermocouple has a wider temperature range but is less accurate and stable than RTD.
Both RTD and thermocouple are commonly used in industries such as food processing, automotive, aerospace, and HVAC.

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