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Thermocouple Extension Cable

Thermocouple Extension Cable

This product has been discontinued and removed from our shelves.

Executive Standard: IEC584-3

The thermocouple extension cable is a pair of conducting wire covered with insulating layer having the same nominal value with thermal electromotive force of the matched thermocouple within certain temperature range. The product can be connected with the thermocouple and measuring device to compensate the error resulting from the temperature variation at the connection point of the product and thermocouple.

Our thermocouple extension cable has high quality and can be assorted into single pair of core type, multiple pair of core type and the unpaired multi-core type. Used as the compensating wire, extension wire and control wire, the product is available for electrical connection between the temperature display instrument and the thermocouples of type R, S, B, K, N, E, T, J and L. It has high measuring accuracy, wide applicable temperature range of -200℃ to 1100℃, short thermal response time, excellent mechanical performance and long service lifetime. Meanwhile, the product performs excellently in resistance to acid, corrosion, aging, oil and water.

Highlights

Thermocouple Extension Cable
1. Conductor. We smelt the material of the thermocouple extension cable in the vacuum furnace with the processes involving argon annealing, hydrogen annealing and precise drawing. Meanwhile, the professional testing equipment is utilized for testing the tensile strength, resistance and electric potential.
2. Shielding material. We apply the top grade stainless steel braid, tin-coated copper braid, aluminum-plastic tape wrap, copper tape wrap or aluminum foil wrap as the shielding layer to achieve 100% covering.
3. Insulation material. Our insulation material involves PVC, Teflon, PFA, silicon rubber, fiberglass, quartz fiber, etc., featuring good insulativity and adapting to a variety of temperatures and environments. We promise that the insulation material is absolutely not the recycled material.


Customer Selection Chart
Type Core Cross-section
(mm2)
AWG No.of Strands× Diameter
(mm)
Insulation Shield Jacket
SC
RC
BC
KCA
KCB
KX
NC
NX
EX
JX
TX
LX    
Single Pair

Multi-pair

Multi-core,
no pairs  
0.07
0.22
0.35
0.40
0.50
0.60
0.75
0.75
1.00
1.00
1.34
1.34
1.50
1.50
2.00
2.00
2.00
2.50
2.50
24
22
21
20
20
19
19
18
18
16
16
16
16
14
14
14
13
13
1×0.30
7×0.20
5×0.30
13×0.2
7×0.30
19×0.20
7×0.37
24×0.20
7×0.43
14×0.30
7×0.49
19×0.30
7×0.52
21×0.30
7×0.60
19×0.366
28×0.30
7×0.65
19×0.41

PVC(-25,+70℃)
PVC (-25,+105℃)
Silicone Rubber
(-60,+180℃) 
FEP(-60,+205℃)
PFA(-60,+275℃)
Fiberglass
(-60,+450℃)
Quartz Fiber
(-60,+1100℃)      
Stainless Steel Braid
Tin-coated Copper Braid
Al-plastic Tape Wrap
Cu Tape Wrap
Al Foil Wrap  
PVC(-25,+70℃)
PVC (-25,+105℃)
Silicone Rubber
(-60,+180℃)
FEP(-60,+205℃)
PFA(-60,+275℃)
Fiberglass
(-60,+450℃)
Quartz Fiber
(-60,+1100℃)      
Technical Specification
Type Conductor Material EMF(μV)
100 ℃ 200 ℃
EMF Allowable Deviation EMF Allowable Deviation
Anode Cathode Standard Grade II Grade I Standard Grade II Grade I
SC SPC (Cu) SNC(CuNi0.6) 645 ±60(±5.0℃) ±30(±2.5℃) 1440 ±60(±5.0℃) --
RC RPC(Cu) SNC(CuNi0.6) 645 ±60(±5.0℃) ±30(±2.5℃) 1440 ±60(±5.0℃) --
KCA KPCA(Cu) KNCA(CuNi40) 4095 ±100(±2.5℃) ±60(±1.5℃) 8137 ±100(±2.5℃) ±60(±1.5℃)
KCB KPCB(Fe) KNCB(CuNi22) 4095 ±100(±2.5℃) ±60(±1.5℃) 8137 -- --
KX KPX(Chomel) KNX(Alumel) 4095 ±100(±2.5℃) ±60(±1.5℃) 8137 ±100(±2.5℃) ±60(±1.5℃)
NC NPC(Fe) NNC(CuNi18) 2774 ±100(±2.5℃) ±60(±1.5℃) 5912 ±100(±2.5℃) ±60(±1.5℃)
NX NPX (NiCrSi) NNX(NiSi) 2774 ±200(±2.5℃) ±60(±1.5℃) 5912 ±100(±2.5℃) ±60(±1.5℃)
EX EPX (NiCr10) ENX(CuNi45) 6317 ±60(±2.5℃) ±120(±1.5℃) 13419 ±200(±2.5℃) ±120(±1.5℃)
JX JPX (Fe) JNX(CuNi45) 5268 ±140(±2.5℃) ±85(±1.5℃) 10777 ±140(±2.5℃) ±85(±1.5℃)
TX TPX(Cu) TNX(CuNi18) 4277 ±60(±1.0℃) ±30(±0.5℃) 9285 ±90(±1.5℃) ±48(±0.8℃)

Note: The LX type product is manufactured in accordance with the national technical standard in Russia strictly.

Products of Multiple Pair of Core Type and Unpaired Multi-core Type
1. The number of the paired core is optional with 1 to 39.
2. The thermocouple extension cable is printed with color zone of different colors or figure to distinguish each pair of conducting wire.
3. The insulation and jacket material is optional with PVC, FEP, PFA, silicon rubber, etc.
4. We adopt the aluminum foil, aluminum-plastic tape wrap, tinned copper braid or other materials as the shielding material.

Other Information
1. Production Capability: 5000km/month
2. Delivery Date: 20 working days after receipt of downpayment or L/C date
3. Payment Term: T/T or L/C
4. Price Term: FOB, CNF, CIF, CPT, DDU, DDP

As a manufacturer and supplier in China specialized in producing various wires and alloy materials, we can also provide resistance heating wire, thermocouple wire, paper covered wire, hot dip galvanized wire, and more.

Precautions for Use
1. Selection for Compensating Cable
The product must be chosen in line with the type of the used thermocouple and the application occasion. For instance, the K type thermocouple should be assorted with the K type compensating wire. Confirm the working temperature range according to the application occasion. Generally, the KX type product works with the temperature of -20℃ to 100℃ and a wider temperature range of -25℃ to 200℃. If you want to choose the insulation material or shielding layer, please refer to the Customer Selection Chart on the page.
2. Contact Connection
Make the two contacts of the thermocouple terminal as close as possible to try to keep consistent temperature of the two contacts. Meanwhile, keep the connection points of the instrument terminal having consistent temperature as much as possible. The contact needs protection from being blown directly by the fan of the instrument.
3. Using Length
The signal of the thermocouple is very slight with microvolt level. So, if the compensation cable is too long, the attenuation of the signal and the interference coupling of the strong current in the environment can cause signal distortion of thermocouple definitely. Then, the measuring and temperature controlling are not correct. If serious, the temperature fluctuation would come out.
In line with our experience, the length of the thermocouple compensating wire should be controlled within 15m. If it exceeds 15m, the temperature transmitter is recommended for transmitting signal. It transforms the electric potential value of the corresponding temperature into the direct current to transmit, featuring strong anti-interference capability.
4. Wire Arrangement
The arrangement of the thermocouple extension cable must stay away from the power line and interference source. The crossing mode rather than the parallel mode should be adopted as much as possible in the case of unavoidable traversing.
5. Shielding the Compensating Wire
The method of shielding compensating wire can be employed for enhancing the anti-interference capability of the thermocouple connecting wire. It can get better effect especially in the case of the occasion having lots of filed interference source. But there is a prerequisite of grounding the shielding layer strictly. Otherwise, the shielding layer would lose the shielding function and also enhance the interference.

Related Names
Compensation Cable | Thermocouple Extension Wire | Single Pair Compensating Cable
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