PRT Temperature vs. Resistance Table

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PRT Temperature vs. Resistance Table (45.6 KB)

A PRT readout's accuracy is specified in ohms. The equivalent temperature accuracy depends on both the resistance and temperature sensitivity of the PRT at temperature (T). Use this chart to estimate PRT resistance and sensitivity, for specific temperatures and PRT types. First, select the row (T) with the temperature you are interested in and the columns with the desired PRT type. For each PRT type, the first column contains the PRT resistance reading at specified temperatures and the second column contains the associated temperature sensitivity. Readout resistance accuracy at a specified temperature depends on the resistance reading of the PRT, found in the first column for each PRT type. Equivalent temperature accuracy depends on the resistance accuracy and also the sensitivity (dR/dT) found in column two for each PRT type. First, calculate resistance accuracy and then divide by the PRT temperature sensitivity (dR/dT) to convert accuracy from units of resistance to units of temperature.