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Thermocouple is a transducer but rtd is not transducer why?
Both taking heat as a input and giving mv
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Answer Posted / ulaganathan
in GENERAL CONSIDER AN THERMOCOUPLE WHENEVER IM
GIVING HEAT(PHYSICAL PARAMETER) THERE EXIST GENERATION
OF POTENTIAL RESISTANCE(ELECTRICAL PARAMETER) BY
SEEBECK EFFECT.IT IS AN SECONDARY IT IS AN SECONDARY
ONE
BUT INCASE OF AN RTD FOR THE CHANGE IN PHYSICAL
PARAMETER THAT IS HEAT IS CONVERTED TO CHANGE IN
DISPLACEMENT OF COIL (AGAIN AN PHYSICAL PARAMETER
MEASURESED. HENCE ITS AN SENSOR.IT IS AN PRIMARY ONE
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