Thermocouple Compensating and Extension Wire

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The thermocouple compensating and extension wire is used for connecting the cold junction of thermocouple with the display instrument, thus forming a temperature measurement system. It has a wide operating temperature range, from -25 to 200 ℃

Our company produces a great variety of thermocouple compensating and extension wires, including KX, NX, EX, JX, TX, SC/RC, KCA, KCB and WRENC types. Our products are made in accordance with national standard GB/T 4990-2010 Alloy Wires of Extension and Compensating Cables for Thermocouples or international standard IEC584-3 Thermocouple Part III-Compensating Wire. They are now extensively used in temperature measurement instruments and cables for such industries as nuclear power, petroleum, chemical, metallurgy, electric power, etc.

Compensating Wire EMF and the Tolerance
Thermocouple type Compensation wire type Usage
Classifi
cation
Measuring junction temperature ℃ Standard
EMF
value μV
Precision grade General grade
Tolerance μV Thermal EMF range μV Tolerance μV Thermal EMF range μV
S or R SC or RC G 100 646 ±30 616~676 ±60 586~706
H 100
200
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

As a professional thermocouple compensating and extension wire manufacturer and supplier in China, we also offer stranded wire, nonmagnetic heating wire/cable, underfloor heating cable mat, etched foil heating plate, and much more.

Related Names:
Alloy Wire for Temperature Measuring System | High Grade Thermocouple Wire for Measuring Instrument | Thermocouple Wire | Compensating Wire

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