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Title: The Effect Of Heating Rate During Testing And Round Robin Calibrations Of Type K And Type N Thermocouples
Author: T.P. Wang, D. Bediones, R.L. Hickey
Source: 1991 Measurement Science Conference
Year Published: 1991
Abstract: In this study, adjacent lengths of 20 gage insulated Type K thermocouples in unaged and stabilized or fully aged condition, Type N thermocouples and bare wire couple of K were calibrated at Thermo Electric in triplicate using the standard heating rate and the slow heating rate. Thermocouple wire from adjacent length was calibrated at McDonnell Douglas in triplicate using identically the same slow heating rate as Thermo Electric. The effect of heating rate on the calibration of unaged and fully aged Type K thermocouples and unaged Type N couples are discussed in conjunction of the mechanism of aging of Ni/Cr alloys. The repeatability of calibration at the same location and the reproducibility of tests at different locations are analyzed.

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