ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
We have designed, built, and tested a robust, thermocouple-based furnace calibration system having automated data acquisition and processing. The system can be used to produce maps of the thermal fields and gradients inside high-temperature cavities. The apparatus consisted of nine type K thermocouples mounted in a ceramic frame, an analog-to-digital interface board, a computer, NBS traceable calibration instrumentation, and software coded specially for the data acquisition and reduction. The absolute accuracy of the system was ±1.3 °C up to 300 °C, providing that the thermocouples had not previously been exposed to temperatures higher than that. The resolution of its gradient sensing ability was ±0.02 °C mm−1. We present details of its construction and operation, a front-to-back error analysis, and results of its use with a box furnace operated between 50 and 1200 °C.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1140382
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