Project Description

Thermocouple Extension & Compensation Wire

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
ThermocoupleCompensatingand extension Wire typeUsage ClassificationMeasuring junctionStandard EMFPrecision gradeGeneral level
No.indexingtemperature/℃value/μVTolerance μVThermal EMF range μVTolerance μVThermal EMF range μV
S or RSC or RCG100646±30616-676±60586-706
H100646--586-706
20011441--1.381~1501
KKX, KCA or KCBG-25-968±40-924~-1012±80-1936
10040964052~41404008~4184
H-25-968-924~-1012±88-1936
10040964052~41404008~4184
20081388094~81828050~8226
NNX or NCG-25-646±43-1292±86-1292
10027742731~28172688~2860
H-25-646-1293-1292
10027742731~28172688~2860
200591235870~59565827~5999
EEXG-25-1432±81-2864±138-2864
10063196238~ 64006181~6 457
H-25-1432-2864-2864
10063196238~64006181~6457
2001342113340~1350213283~13559
JJXG-25-1239±62-2478±123-2478
10052695207~53315146~5392
H-25-1239-1478-2478
10052695207~53315146~5392
2001077910717~1084110656~10902±1℃or±1.5%t
TTXG-25-940±30-910 970±60-1850
10042794249~43094189~4339
H-25-940±48-1880-1880
10042794231~43274189~4369
20092889240~9198~9378
  • Resistivity
Compensation wire typeReciprocating resistance at ℃ Ω/m(less than)
0.2mm20.5mm21.0mm21.5mm22.5mm2
SC or RC0.250.100.050.030.02
KCA3.501.400.700.470.28
KCB2.601.040.520.350.21
KX5.502.201.100.730.44
EX6.252.501.250.830.50
JX3.251.300.650.430.26
TX2.601.040.520.350.21
NC3.751.500.750.500.30
NX7.152.861.430.950.57