HIGH ACCURACY THERMOCOUPLE MEASUREMENT TECHNIQUES
Methods were studied to improve the accuracy of out-ofpile and in-pile thermocouple temperature measurements and to find promising thermocouple materials which could be used as alternates to Chromel-Alumel. Practical measurement techniques available to achieve plus or minus 1-F accuracy are described. The in-pile stability of presently used thermocouples has not been clearly established. Promising alternate thermocouple materials include iron- constantan, and Chromel P-constantan for in-pile applications and platinum -- platinum--l0% rhodium and Platinel for out-ofpile use. Recommendations are given for conducting additional in-pile tests to establish the error caused by calibration drift, and to establish the stability of ironconstantan and Chromel P- constantan. (B.O.G.)
- Research Organization:
- Westinghouse Electric Corp. Bettis Atomic Power Lab., Pittsburgh
- DOE Contract Number:
- AT(11-1)-GEN-14
- NSA Number:
- NSA-16-007691
- OSTI ID:
- 4802475
- Report Number(s):
- WAPD-AD-TH-545
- Country of Publication:
- United States
- Language:
- English
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