Thermocouple compensating wire is used to connect the electrode (cold side of thermocouple) with display instrument in order to form a temperature measurement system. The working temperature is -25~200℃. Our plant mainly manufacture type KX,NX,EX,JX,NC,TX,SC/RC,KCA,KCB and WREC compensating wire for thermocouple, and they are used in temperature measurement instruments and cables. Our thermocouple compensating products are all made abiding by GB/T 4990-2010 ‘Alloy wires of extension and compensating cables for thermocouples’ (Chinese National Standard), and also IEC584-3 ‘Thermocouple part 3-compensating wire’ (International standard).
EMF of Compensating wire and the tolerance
| Thermocouple No. indexing |
Compensation wire type |
Usag Classification |
Measuring junction temperature / ℃ |
standard EMF value/μV |
Precision grade |
General grade
|
| Tolerance μV |
Thermal EMF range μV |
Tolerance μV
|
Thermal EMF range μV
|
|
SorR
|
SC or RC
|
G
|
100
|
646
|
±30
|
616～676
|
±60
|
586～706
|
|
H
|
|
646
1 1441
|
-
-
|
-
-
|
±60
|
586～706
1.381～1 501
|
|
K
|
KX,KCA
or KCB
|
G
|
-25
100
|
-968
4 096
|
±40
|
-924～-1 012
4 052～4 140
|
±80
|
-880～-1 056
4 008～4 184
|
|
H
|
-25
100
200
|
-968
4 096
8 138
|
±40
|
-924～-1 012
4 052～4 140
8 094～8 182
|
±88
|
-880～-1 056
4 008～4 184
8 050～8 226
|
|
N
|
NX or NC
|
G
|
-25
100
|
-646
2 774
|
±43
|
-603～-689
2 731～2 817
|
±86
|
-560～-732
2 688～2 860
|
|
H
|
-25
100
200
|
-646
2 774
5 913
|
±43
|
-603～-690
2 731～2 817
5 870～5 956
|
±86
|
-560～-732
2 688～2 860
5 827～5 999
|
|
E
|
EX
|
G
|
-25
100
|
-1 432
6 319
|
±81
|
-1 351～-1 513
6 238～ 6400
|
±138
|
-1 294～-1 570
6 181～6 457
|
|
H
|
-25
100
200
|
-1 432
6 319
13 421
|
±81
|
-1 351～- 1513
6 238～6 400
13 340～13 502
|
±138
|
-1 294～-1 570
6 181～6 457
13 283～13 559
|
|
J
|
JX
|
G
|
-25
100
|
-1 239
5 269
|
±62
|
-1 177～-1 301
5 207～5 331
|
±123
|
-1 116～-1 362
5 146～5 392
|
|
H
|
-25
100
200
|
-1 239
5 269
10 779
|
±62
|
- 177～-1 301
5 207～5 331
10 717～10 841
|
±123
|
-1 116～-1 362
5 146～5 392
10 656～10 902
|
|
T
|
TX
|
G
|
-25
100
|
-940
4 279
|
±30
|
-910～-970
4 249～4 309
|
±60
|
-850～-1 000
4 189～4 339
|
|
H
|
-25
100
200
|
-940
4 279
9 288
|
±48
|
-892～-988
4231～4 327
9 240～
|
±90
|
-850～-1 030
4 189～4 369
9 198～9 378
|
Compensating wire reciprocating resistance
|
Compensation wire type
|
Reciprocating resistance at 20℃ Ω/m (less than)
|
|
0.2m㎡
|
0.5 m㎡
|
1.0 m㎡
|
1.5 m㎡
|
2.5 m㎡
|
|
SC or RC
|
0.25
|
0.1
|
0.05
|
0.03
|
0.02
|
|
KCA
|
3.5
|
1.4
|
0.7
|
0.47
|
0.28
|
|
KCB
|
2.6
|
1.04
|
0.52
|
0.35
|
0.21
|
|
KX
|
5.5
|
2.2
|
1.1
|
0.73
|
0.44
|
|
EX
|
6.25
|
2.5
|
1.25
|
0.83
|
0.5
|
|
JX
|
3.25
|
1.3
|
0.65
|
0.43
|
0.26
|
|
TX
|
2.6
|
1.04
|
0.52
|
0.35
|
0.21
|
|
NC
|
3.75
|
1.5
|
0.75
|
0.5
|
0.3
|
|
NX
|
7.15
|
2.86
|
1.43
|
0.95
|
0.57
|
|
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