Accuracy and Reproducibility of Temperature Measurement by Thermocouples

T. P. Wang
1989 Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General   unpublished
The accuracy of base metal thermocouples in initial condition and after service is reviewed in conjunction with the accuracy and reproducibility of measurement and factors affecting calibration. Lot calibration data on insulated thermocouple wire and metal sheathed thermocouples are examined on a statistical basis. Some stability test data on K, JET and E thermocouples in air atmosphere are presented. Calibration data by standard methods are compared with those obtained by data acquisition and
more » ... ta acquisition and freeze point measurements. Roundrobin calibration of J and K thermocouples is included for the determination of the uncertainty of calibration by J and K thermocouples. By integrating the information on initial calibration and stability of the thermocouple with the accuracy of measurement, one is in a position to select the best system for close temperature control throughout a process.
doi:10.1115/89-gt-44 fatcat:axt26pcmvvbepmucoqumdpfjem