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Thermo Couple Wires

 



EMF values, Tolerances

The EMF values as a function of temperature and the corresponding tolerances of W.C. Heraeus precious metal thermo-wires comply with the following current international standards

DIN-IEC 584 Parts 1 and 2
BS 4937
NBS ASTM .E.230
NFC 42.321
JIS 1602

Classes of the limiting deviations for thermo-wire couples according to DIN-IEC 584 Part 1 ( Temperature of comparative point = 0 oC

Class 1 2 3
       
Limiting deviations
( in each class the higher value is applicable )
1oC
or
{1+(T-1100)*0.003}oC
1.5oC
or
{0.0025*T}oC
4.0oC
or
{0.005*T}oC
Range of application      
Type R,S oC to +1600oC oC to +1600oC -
Type B - +600oC to 1700oC +600oC to 1700oC

EMF values and limiting deviations of W.C. Heraeus thermo-wire couples according to DIN-IEC 584 Part1 ( Temperature of comparative points = 0 oC ) for T68 T=1200oC

Type EMF EMF/dt Class 1
Tolerance
Class 2
Tolerance
Class 3
Tolerance

[ V]
[ V/oC ]
[ V or oC ]
[ V or oC ]
[ V or oC ]
           
R 13224 14.0
14 V 0. 1oC
42 V 0. 3.0oC
-
S 11947 12.0
12 V 0. 1oC
36 V 0. 3.0oC
-
B 6783 11.0 -
40 V 0. 3.0oC
63 V 0. 6.0oC

EMF values and limiting deviations of W.C. Heraeus thermo-wire couples according to DIN-IEC 584 Part1 ( Temperature of comparative points = 0 oC ) for T68 T=1554oC

Type EMF EMF/dt Class 1
Tolerance
Class 2
Tolerance
Class 3
Tolerance

[ V]
[ V/oC ]
[ V or oC ]
[ V or oC ]
[ V or oC ]
           
R 18202 14.0
20 V 0. 1.4oC
45 V 0. 3.9oC
-
S 16224 12.0
17 V 0. 1.4oC
47 V 0. 3.9oC
-
B 10721 11.5 -
45 V 0. 3.9oC
91 V 0. 7.8oC