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Revised Thermocouple Reference Tables

Thermocouple Tables for Letter-Designated Thermocouple Types Based on the ITS-90:

Celsius Fahrenheit
B (Platinum-30% vs
Platinum-6% Rhodium)
0°C to 590°C 30°F to 490°F 1600°F to 2140°F
600°C to 1190°C 500°F to 1040°F 2150°F to 2690°F
1200°C to 1810°C 1050°F to 1590°F 2700°F to 3300°F
E (Chromega® vs Constantan) -260°C to 340°C -450°F to 140°F 700°F to 1290°F
350°C to 990°C 150°F to 690°F 1300°F to 1830°F
J (Iron vs Constantan) -200°C to 490°C -340°F to 290°F 950°F to 1540°F
500°C to 1190°C 300°F to 940°F 1550°F to 2190°F
K (Chromega® vs Alomega®) -260°C to 290°C -450°F to 40°F 1050°F to 1540°F
300°C to 840°C 50°F to 540°F 1550°F to 2040°F
850°C to 1370°C 550°F to 1040°F 2050°F to 2500°F
N (Nicrosil vs Nisil) -260°C to 490°C -450°F to 290°F 1000°F to 1690°F
500°C to 1290°C 300°F to 990°F 1700°F to 2370°F
R (Platinum-13% Rhodium
vs Platinum)
-40°C to 540°C -50°F to 490°F 1600°F to 2140°F
550°C to 1140°C 500°F to 1040°F 2150°F to 2690°F
1150°C to 1760°C 1050°F to 1590°F 2700°F to 3210°F
S (Platinum-10% Rhodium
vs Platinum)
-40°C to 540°C -50°F to 490°F 1600°F to 2140°F
550°C to 1140°C 500°F to 1040°F 2150°F to 2690°F
1150°C to 1760°C 1050°F to 1590°F 2700°F to 3210°F
T (Copper vs Constantan) -260°C to 390°C -450°F to 140°F 150°F to 750°F


Thermocouple Tables for Letter-Designated Thermocouple Types Based on the ITS-90 presented under license. Information presented is collected from NIST Standard Reference Database 60, NIST ITS-90 Thermocouple Database, Version 1.0

Search and data processing software written by:
Dean Ripple, NIST Process Measurement Division
Shari Young, NIST Standard Reference Data Program

Based on Monograph 175 by:
G.W. Burns
M.G. Scroger
G.F. Strouse
M.C. Croakin
W.F. Guthrie

NIST
National Institute of Standards and Technology
Standard Reference Data Program
Gaithersburg, MD 20899

August, 1995

© 1995 copyright by the U.S. Secretary of Commerce on behalf of United States. All rights reserved. No part of this information may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the distributor.

The National Institude of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the database and to verify that the data contained therein have been selected on the basis of sound scientific judgement. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the database.


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