Answer Posted / shamim akhtar ansari (jamshed

RTD Works on the Base of Wheat Stone Bridge which is Mention Below
Wheat Stone Bridge:-when RTD heated up Then Create Some Voltage on the Point of Joint Where Galvanometer is Connected.
and voltage should be Equal those Point When the Voltage is Increases then Resistance Will Increase.
that transducer convert these produced Resistance into 4 to 20 MA.
Thermocouple:-it works on the Principal of See Back Effect which is mention below
the Seebeck Effect Describe a Thermo Electric Phenomena by which temperature Difference between two Dissimilar metal in a Circuit convert into electric current.

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