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ITS-90 Table for type J thermocouple

For Type J thermocouples, the output voltage increases almost linearly to the temperature difference over a bounded range of temperatures. For precise measurements, non-linearity must be corrected. The nonlinear relationship between the temperature difference and the output voltage (mV) of a thermocouple can be corrected using the table below.

ITS-90 Table for type K thermocouple

For Type K thermocouples, the output voltage increases almost linearly to the temperature difference over a bounded range of temperatures. For precise measurements, non-linearity must be corrected. 

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