Answer:-
To form the Callendar-Van Dusen equation, you model the resistance-temperature relationship of a platinum resistance thermometer (PRT). The equation is: R(T) = R(0) * [1 + AT + BT² + C(T-100)T³ (for T < 0°C)] Here’s how you do it: Measure the resistance at 0°C, called R(0). Determine the constants A, B, and C using calibration data at reference points like 0°C, 100°C, and other known temperatures. Apply the equation to calculate resistance (R) at any temperature (T). The cubic term, involving C, is used for temperatures below 0°C.
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