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  BatchSale International Company Limited

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Compensation Lead for Thermocouple

  This series of compensation lead is applicable for thermocouple of graduation S, R, K, N, E, J and T.

  Technical Feature and Working Condition:
1. Insulation resistance - In air temperature 15∼35ºC and relative humidity no more than 80%, the insulation resistance between core wire and shielding layer is larger than 5MΩ/10m
2. Mechanical properties of insulating layer and shielding layer - tensile strength≥12.5N/mm, elongation≥12.5%
3. Installation temperature - no less than 0ºC.
4. Bending radius - no less than 6×EDΦ.
5. Thermoelectric properties - When the cold end is at 0ºC, the thermal EMF of cable at 100ºC is according to table below.

  
Type SC/RC KCA, KCB, KX NC, NX EX JX TX
Thermal EMF (mV) 0.646 4.094 2.774 6.319 5.269 4.279
Standard Level Tolerance (μV) ±60 ±100 ±100 ±200 ±140 ±60
Precision Level Tolerance (μV) ±30 ±60 ±60 ±120 ±85 ±30

Types and Name
Type Name Applicable Thermocouple Thermocouple Graduation
SC/RC Cu-CuNi0.6 Compensation Lead Pt10Rh-Pt
Pt13Rh-Pt		 S
R
KCA
KCB
KX		 Fe-CuNi22 Compensation Lead
Cu-CuNi40 Compensation Lead
NiCr10Si-NiSi3 Compensating Extension Lead		 NiCr-NiSi K
NC
NX		 Fe-CuNi18 Compensation Lead
NiCr14Si-NiSi Compensating Extension Lead 		NiCrSi-NiSi N
EX NiCr10-CuNi45 Compensating Extension Lead NiCr-CuNi E
JX Fe-CuNi45 Compensating Extension Lead Fe-CuNi J
TX Cu-CuNi45 Compensating Extension Lead Cu-Constantane T

Compensation Lead Level, Mark, Symbol, Material and Working Temperature Condition
Level Mark Symbol Insulating By Sheathed By Shielding Material Working Temperature Range
General G VV PVC(V) PVR(ZRPVC) N/A -20ºC∼100ºC
VVP PVC(V) PVR(ZRPVC) Clad Al Belt or Copper Mesh
Heat-proof H HF4 PTFE Fiberglass (FB) PTFE Fiberglass N/A -40ºC∼200ºC
HF4P PTFE Fiberglass (FB) PTFE Fiberglass Copper Mesh
Wire Structure and Cross Area
Cross Sectional Area of Wire (mm2) Wire Structure (Conductor No./Φ(mm))
Single-Ply Multi-Ply
0.5 1/0.8 7/0.3
1.0 1/1.13 7/0.43
1.5 1/1.37 7/0.52
2.5 1/1.76 19/0.41

Cross Sectional Area and External Diameter for Reference
Level Cross Sectional Area (mm2) External Diameter (for reference)
Single-Ply Wire Multi-Ply Wire
General 0.5
1.0
1.5
2.5		 3.7×6.4
5.0×7.7
5.2×8.3
5.7×9.3		 3.9×6.6
5.1×8.0
5.5×8.7
5.9×9.8
Head-Proof 0.5
1.0
1.5
2.5		 2.6×4.6
3.0×5.3
3.2×5.8
3.6×6.7		 2.8×4.8
3.1×5.6
3.4×6.2
4.0×7.3
Comments: Additional 1.6mm for shielding layer.


 
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BatchSale International Company Limited
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