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  • Accuracy Standards
    The industry standard for platinum RTD's according to IEC-751 is + /- 0.12% (of resistance) at 0°C, commonly referred to as Class B accuracy. This will provide an accuracy of + /- 0.3°C at 0°C, which is quite good if you compare it to the + /- 2.2°C of a standard Type J or K thermocouple.
  • Class A RTD Elements
    elements are multi-point and more precise, providing tighter control of the temperature coefficient and an accuracy of .3° C at 0° C. As stated in section 4.2.2 of IEC Standard 751, "The test for Class A thermometers shall be carried out at two or more temperature suitably spaced over the stated working

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