ASTM-E230 2003

$82.33

E230-03 Standard Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples

Published By	Publication Date	Number of Pages
ASTM	2003	189

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Categories: 17.200.20 - Temperature-measuring instruments, ASTM

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Description

ASTM E230-03

Historical Standard: Standard Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples

ASTM E230

Scope

1.1 This specification contains reference tables (Tables 8-23) that give temperature-electromotive force (emf) relationships for Types B, E, J, K, N, R, S, and T thermocouples. These are the thermocouple types most commonly used in industry.

1.2 Also included are lists of standard and special tolerances on initial values of emf versus temperature for thermocouples (Table 1), thermocouple extension wires (Table 2), and compensating extension wires for thermocouples (Table 3).

1.3 Tables 4-5, included herein, give data on insulation color coding for thermocouple and thermocouple extension wires as customarily used in the United States.

1.4 Recommendations regarding upper temperature limits for the thermocouple types referred to in 1.1 are given in Table 6.

1.5 Tables 24-43 give temperature-emf data for single-leg thermoelements referenced to platinum (NIST Pt 67). The tables include values for Types BP, BN, JP, JN, KP (same as EP), KN, NP, NN, TP, and TN (same as EN).

1.6 Tables for Types RP, RN, SP, and SN thermoelements are not included since, nominally, Tables 18-21 represent the thermoelectric properties of Type RP and SP thermoelements referenced to pure platinum.

1.7 Polynomial coefficients that may be used for computation of thermocouple emf as a function of temperature are given in Table 7. Coefficients for the emf of each thermocouple pair as well as for the emf of individual thermoelements versus platinum are included.

1.8 Coefficients for sets of inverse polynomials are given in Table 44. These may be used for computing a close approximation of temperature (^oC) as a function of thermocouple emf. Inverse functions are provided only for thermocouple pairs and are valid only over the emf ranges specified.

1.9 This specification is intended to define the thermoelectric properties of materials that conform to the relationships presented in the tables of this standard and bear the letter designations contained herein. Topics such as ordering information, physical and mechanical properties, workmanship, testing, and marking are not addressed in this specification. The user is referred to specific standards such as Specifications E235, E574, E585, E608, E1159, or E1223, as appropriate, for guidance in these areas.

1.10 The temperature-emf data in this specification are intended for industrial and laboratory use.

Keywords

emf computation; compensating extension wire; inverse polynomial; polynomial coefficient; reference tables; thermocouple; thermocouple extension wire; thermoelement; upper temperature limit

ICS Code

ICS Number Code 17.200.20 (Temperature-measuring instruments)

DOI: 10.1520/E0230-03

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents
2	Source of Data Thermocouple Types and Letter Designations Tolerances on Initial Values of EMF versus Temperature
3	Color Coding List of Tables Keywords
4	X1. IEC COLOR CODE SYSTEM X1.1 General TABLE 1
5	TABLE 2 TABLE 3 TABLE 4
6	TABLE 5 TABLE 6
7	TABLE 7
12	TABLE 8
16	TABLE 9
23	TABLE 10
26	TABLE 11
31	TABLE 12
34	TABLE 13
39	TABLE 14
43	TABLE 15
49	TABLE 16
53	TABLE 17
59	TABLE 18
63	TABLE 19
70	TABLE 20
74	TABLE 21
81	TABLE 22
83	TABLE 23
86	TABLE 24
91	TABLE 25
100	TABLE 26
104	TABLE 27
111	TABLE 28
115	TABLE 29
122	TABLE 30
124	TABLE 31
128	TABLE 32
130	TABLE 33
134	TABLE 34
138	TABLE 35
144	TABLE 36
148	TABLE 37
154	TABLE 38
157	TABLE 39
163	TABLE 40
166	TABLE 41
172	TABLE 42
174	TABLE 43
177	TABLE 44
180	TABLE 45
185	TABLE 46
189	TABLE X1.1

Additional information

Standard Title	E230-03 Standard Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples
Published Code	ASTM
Publication Date	2003
Pages Count	189
ICS Codes	17.200.20 - Temperature-measuring instruments