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Complementary Lead Wire Series

Compensating line conductor for thermocouple

Summarization
    This factory holds a 10-old-year history specializing in the production of thermocouple, thermo-resistance and compensating line conductors. The latter acts to transmit the measured temperature signal to the collecting control room or extend a thermocouple to the place of constant temperature and the advantages with use of it come at the possibilities to improve both mechanical and physical performances of the thermo-electric loop and increase both softness and wind-ability for part of the loop, as well as to adjust the loop’s resistance value and shield external interferences.
Structure and Type
   The compensating line conductor generally consists of line core (single ply or multi-ply soft type), insulating layer and protective sleeve; plus one shielded layer of woven tin-plated copper wire and zinc-plated copper wire on the outer layer.
   The compensating line conductor can be divided into common, heat resisting and high temperature resisting three grades upon the different temperatures because of different materials of the insulating layer, the common grade uses a PVC insulating layer, which features are bearable to harmful gas corrosion and solvents, as well as moisture-proof; the heat resisting grade uses alkali-free glass wire and is outside coated with silicon organic paint and features of non-combustion, high temperature resisting, good electric insulating property, high mechanical strength and stable chemical property and the high temperature resisting grade uses a PTFE insulating layer and features withstanding acid, alkali and oil, combustion resisting, non-water absorbance and good insulating performance, and into compensating type (C) and extending type (X), the former uses an alloy different from the used thermo-electric pole and is suitable for noble metal and some non-standard thermocouples while the latter uses the alloy identical to the used thermo-electric pole and is suitable for cheap metal thermocouples.
Parameter
Model Thermocouple
Model Complementary Lead Wire
Color Symbol
Tolerance
Reciprocating resistance valueΩ
Temperature range
Ambient temperature or humidity
Insulance
Positive
Minus
Commonly
Accuracy
Common
Temperature oven-proof
High-temperature
NiCr-Constantan (E)
NiCr-Constantan (EX)
Red
Brown
±2.5
±1.5
1.25
-40~80
-40~200
-40~275
15~35℃




≤75%
≥5
MΩ/10m
Fe-Constantan (J)
Fe-Constantan (JX)
"
Purple
"
"
0.648
NiCr-NiSi(K)
NiCr-NiSi (KX)
"
Black
"
"
"
 
Cu-Constantan (KC)
"
Blue
±1.0
±0.5
"
Cu-Constantan(T)
Cu-Constantan (TX)
"
"
"
"
"
Wolfram-rhenium5-Wolfram-rhenium26
Copper-copper nickel(WC5/26)
"
White
     
PtRh10-Pt(S)
Copper-copper nickel(SC)
"
Green
±5.0
±3.0
"

Designation of the Model
    E.g:KXXFGIP2×1.5mm2
    The indicating graduation number is K. extending type compensating line conductor PTFE insulating layer, single-ply core common grade, with shielded layer two pieces of core, sectional area of single piece to be 1.5mm²

O.D. of compensating line conductor, insulating of layer, material of protective sleeve, thinkness of protective sleeve ,delivery period and so on.
Material (temperature) of protective sleeve of insulating layer
Nominal section
mm2
Line core(mm)
Thickness of insulating layer
(mm)
Protective sleeve thickness
(mm)
Max. outer diameter(mm)
Odd
Much
Odd
Much
PTFE(275℃)
PTFE(100℃)
0.5
0.8
7×0.3
0.5 -0.1
+0
0.8
3.7×5.7
3.8×5.8
1.0
1.13
7×0.43
0.7 -0.1
+0
1.0
5.0×7.7
5.1×8.0
1.5
1.37
7×0.52
0.7 -0.1
+0
1.0
5.2×8.3
5.4×8.7
2.5
1.76
19×0.41
0.7 -0.1
+0
1.0
5.7×9.2
5.9×9.7
Alkali-free glass wire weaving
Outside coated with silicon organic paint
(200℃)
0.5
0.8
7×0.3
0.5 -0.1
+0
0.3
2.6×4.6
2.7×4.8
1.0
1.13
7×0.43
0.5 -0.1
+0
0.3
3.0×5.3
3.1×5.6
1.5
1.37
7×0.52
0.5 -0.1
+0
0.3
3.2×5.8
3.4×6.2
2.5
1.76
19×0.41
0.5 -0.1
+0
0.3
3.6×6.7
4.0×7.3

Notice:
1. Please make note clearly on the model of compensating line conductor and the indexing number of the fitted thermocouple.
2. O.D. of compensating line conductor, number of layers, ordered quantity, delivery period and so on.



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