BS EN 60584-1:2013
$215.11
Thermocouples – EMF specifications and tolerances
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 72 |
IEC 60584-1:2013 specifies reference functions and tolerances for letter-designated thermocouples (Types R, S, B, J, T, E, K, N, C and A). Temperatures are expressed in degrees Celsius based on the International Temperature Scale of 1990, ITS-90 (symbol t90), and the EMF (symbol E) is in microvolts. The reference functions are polynomials which express the EMF, E in V, as a function of temperature t90 in °C with the thermocouple reference junctions at 0 °C. Values of EMF at intervals of 1 °C are tabulated in Annex A. This third edition cancels and replaces the second edition published in 1995 and constitutes a technical revision. It includes the following changes: – IEC 60584-1:1995 and IEC 60584-2:1982 have been merged; – the standard is now explicitly based on the reference polynomials which express thermocouple EMF as functions of temperature. The tables derived from the polynomials are given in Annex A; – inverse polynomials expressing temperature as functions of EMF are given in Annex B, but inverse tables are not given; – the range of the polynomial relating the EMF of Type K thermocouples is restricted to 1 300 °C; – values of the Seebeck coefficients are given at intervals of 10 °C; – thermoelectric data (EMF and Seebeck coefficients) are given at the fixed points of the ITS-90; – some guidance is given in Annex C regarding the upper temperature limits and environmental conditions of use for each thermocouple type.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 5 | English CONTENTS |
| 7 | INTRODUCTION |
| 8 | 1 Scope 2 Terms and definitions |
| 9 | 3 Thermocouple designations |
| 10 | 4 EMF – Temperature reference functions Tables Table 1 – Thermocouple types |
| 11 | Table 2 – Type R reference function |
| 12 | Table 3 – Type S reference function Table 4 – Type B reference function Table 5 – Type J reference function |
| 13 | Table 6 – Type T reference function Table 7 – Type E reference function |
| 14 | Table 8 – Type K reference function Table 9 – Type N reference function |
| 15 | 5 Thermocouple tolerances Table 10 – Type C reference function Table 11 – Type A reference function |
| 16 | 6 Thermoelectric values at the fixed points of the ITS-90 Table 12 – Thermocouple tolerances |
| 17 | Table 13 – EMF and Seebeck coefficients of the thermocouples at the fixed points of the ITS-90 (EMF: upper row, Seebeck coefficient: lower row) |
| 18 | Annex A (informative) Tables for EMF as a function of temperature Table A.1 – Type R: Platinum – 13 % rhodium / platinum (1 of 5) |
| 22 | Table A.2 – Type S: Platinum-10 % rhodium / platinum (1 of 5) |
| 27 | Table A.3 – Type B: Platinum-30 % rhodium / platinum-6 % rhodium (1 of 4) |
| 31 | Table A.4 – Type J: Iron / copper-nickel (1 of 4) |
| 35 | Table A.5 – Type T: Copper / copper-nickel (1 of 2) |
| 37 | Table A.6 – Type E: Nickel-chromium / copper-nickel (1 of 3) |
| 40 | Table A.7 – Type K: Nickel-chromium / nickel-aluminium (1 of 4) |
| 44 | Table A.8 – Type N: Nickel-chromium-silicon / nickel-silicon (1 of 4) |
| 48 | Table A.9 – Type C: Tungsten-5 % rhenium / tungsten-26 % rhenium (1 of 5) |
| 53 | Table A.10 – Type A: Tungsten-5 % rhenium / tungsten-20 % rhenium (1 of 5) |
| 58 | Annex B (informative) Inverse polynomial functions |
| 59 | Table B.1 – Type R Inverse function coefficients |
| 60 | Table B.2 – Type S Inverse function coefficients Table B.3 – Type B Inverse function coefficients |
| 61 | Table B.4 – Type J Inverse function coefficients Table B.5 – Type T Inverse function coefficients |
| 62 | Table B.6 – Type E Inverse function coefficients Table B.7 – Type K Inverse function coefficients |
| 63 | Table B.8 – Type N Inverse function coefficients Table B.9 – Type C Inverse function coefficients |
| 64 | Table B.10 – Type A Inverse function coefficients |
| 65 | Annex C (informative) Guidance on the selection of thermocouples Table C.1 – Recommended maximum temperature of use, tmax/ °C |
| 67 | Table C.2 – Environmental recommendations and limitations of the conductors |
| 68 | Table C.3 – Neutron irradiation effects |
| 69 | Bibliography |
