The principle of platinum resistance temperature measurement that is isolated and amplified

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AVX tantalum capacitor low resistance TPSD107K016R0100 original 2011+

The platinum resistance temperature measurement circuit that is isolated and amplified can form a platinum wet circuit with excellent performance and isolation before and after using the inexpensive isolation amplifier ISO212P. REF200 provides 200μA current to PL100. In the temperature range of -200~850°C, the isolation amplifier ISO212P output standard is 1~5V. To ensure measurement accuracy, each parallel 10μF aluminum is isolated from the input at ±Vw output. Capacitor decoupling, ISO212P is powered by an external +15V single supply. The 0.1μF decoupling capacitor should be a ceramic capacitor.