Type J Thermocouple Extension Wire

Brand Name:DLX
Model Number:Type J Thermocouple extension wire
Minimum Order Quantity:5
Delivery Time:5-21 days
Payment Terms:L/C, T/T, Western Union, MoneyGram
Place of Origin:China
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Location: Changzhou Jiangsu China
Address: NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu
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Product Details



  • Thermocouple Extension Wire

Type J Thermocouple extension wire (JP--Iron, JN-Cu-Ni):

Fe- CuNi thermocouple (type J) extension is also named Iron-Constantan thermocouple.. It is used in vacuum, oxidizing, inert or reducing atmospheres. Iron element oxidizes rapidly at temperatures exceeding 538'C, and therefore heavier gauge wire is recommended for longer life at these temperatures.

Our plant mainly manufacture type KX, NX, EX, JX, NC, TX, SC/RC, KCA, KCB 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).

The thermocouple compensation cables can also be termed as instrumentation cables, since they are used for process temperature measurement. The construction is similar to pair instrumentation cable but the conductor material is different. Thermocouples are used in processes to sense temperature and is connected to the pyrometers for indication and control. The thermocouple and pyrometer are electrically conducted by thermocouple extension cables / thermocouple compensating cables. The conductors used for these thermocouple cables are required to have similar thermo-electric (emf) properties as that of the thermocouple used for sensing the temperature.



  • Thermocouple Wire
CodeWires component of the thermocouple
+Positive leg-Negative leg
NNi-cr-si (NP)Ni-si-magnesium (NN)
KNi-Cr (KP)Ni-Al(Si) (KN)
ENi-Cr (EP)Cu-Ni<constantan> (EN)
JIron (JP)Cu-Ni<constantan> (JN)
TCopper (TP)Cu-Ni<constantan> (TN)


  • ​Standards
ASTMANSIIECDINBSNFJISGOST
(American Society for Testing and Materials) E 230(American National Standard Institute) MC 96.1(European Standard by the International Electrotechnical Commission 584)-1/2/3(Deutsche Industrie Normen) EN 60584 -1/2(British Standards) 4937.1041, EN 60584 - 1/2(Norme Française) EN 60584 -1/2 - NFC 42323 - NFC 42324(Japanese Industrial Standards) C 1602 - C 1610(Unification of the Russian Specifications) 3044

Working Temperature Range


Diameter/mmLong time Working temperature /ºCShort period Working temperature /ºC
0.3,0.5300400
0.8,1.0, 1.2400500
1.6, 2.0500600
2.5, 3.2600750

Detailed Parameter of thermocouple wire

Thermocouple No. indexingCompensation wire typeUsag ClassificationMeasuring junction temperature / ℃standard EMF value/μVPrecision gradeGeneral grade
Tolerance μVThermal EMF range μVTolerance μVThermal EMF range μV
SorRSC or RCG100646±30616~676±60586~706
H100646--±60586~706
2001 1441--1.381~1 501
KKX,KCAG-25-968±40-924~-1 012±80-880~-1 056
or KCB1004 0964 052~4 1404 008~4 184
H-25-968±40-924~-1 012±88-880~-1 056
1004 0964 052~4 1404 008~4 184
2008 1388 094~8 1828 050~8 226
NNX or NCG-25-646±43-603~-689±86-560~-732
1002 7742 731~2 8172 688~2 860
H-25-646±43-603~-690±86-560~-732
1002 7742 731~2 8172 688~2 860
2005 9135 870~5 9565 827~5 999
EEXG-25-1 432±81-1 351~-1 513±138-1 294~-1 570
1006 3196 238~ 64006 181~6 457
H-25-1 432±81-1 351~- 1513±138-1 294~-1 570
1006 3196 238~6 4006 181~6 457
20013 42113 340~13 50213 283~13 559
JJXG-25-1 239±62-1 177~-1 301±123-1 116~-1 362
1005 2695 207~5 3315 146~5 392
H-25-1 239±62- 177~-1 301±123-1 116~-1 362
1005 2695 207~5 3315 146~5 392
20010 77910 717~10 84110 656~10 902
TTXG-25-940±30-910~-970±60-850~-1 000
1004 2794 249~4 3094 189~4 339
H-25-940±48-892~-988±90-850~-1 030
1004 2794231~4 3274 189~4 369
200



Size range



Wire: 0.10 to 8.0 mm.


  • Type J Temperature Range:
  • Thermocouple grade wire, -346 to 1,400F (-210 to 760C)
  • Extension wire, 32 to 392F (0 to 200C)

  • Type J Accuracy (whichever is greater):

  • Standard: +/- 2.2C or +/- .75%
  • Special Limits of Error: +/- 1.1C or 0.4%

China Type J Thermocouple Extension Wire supplier

Type J Thermocouple Extension Wire

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