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Time-Temperature Effect on Jet Engine Thermocouple Accuracy and Reliability
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English
Abstract
Although jet engine thermocouples have been improved considerably over the past 15 years, some research is required into their accuracy and reliability to the extent of mechanical breakdown. The temperature versus time test program discussed here investigates this problem, using two noble metal thermocouple and three sheath materials. The results indicate that accuracy and reliability are questionable after 2300 hr at 1200 F (less at higher temperature) and that more efficient calibration methods need to be adopted. Life limitations due to oxidation and sulfur deterioration of the metals tested are given.
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Authors
Citation
Clark, R., "Time-Temperature Effect on Jet Engine Thermocouple Accuracy and Reliability," SAE Technical Paper 620411, 1962, https://doi.org/10.4271/620411.Also In
References
- “High Temperature Thermometry Seminar,” Oak Ridge National Lab., TID 7586
- “Thermocouple Research to 1000 C,” Final Report, Oak Ridge National Lab., ORNL 2773
- “A Jet Engine T/C System for Measuring Temperature up to 2300 F,” WADC 57 744
- “Temperature - Its Measurement and Control in Science & Industry.” New York Reinhold Publishing Corp.