HIGH ACCURACY THERMOCOUPLE MEASUREMENT TECHNIQUES

Technical Report · Wed Oct 28 04:00:00 EST 1959

OSTI ID:4802475

Fink, E W; Hunt, T W

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

Related Subjects

ALUMINUM ALLOYS
CHROMIUM ALLOYS
COPPER ALLOYS
ENGINEERING AND EQUIPMENT
ERRORS
IRON
MEASURED VALUES
NICKEL ALLOYS
PLATINUM ALLOYS
REACTORS
RHODIUM ALLOYS
STABILITY
TEMPERATURE
THERMOCOUPLES