1. Introduction:
Thermocouple Extension cable is usually used to connect thermocouple and display-controled meters in order to lower the inaccuracy caused by temperature change on the connections.

2. Construction: 
Conductor: original thermocoupole alloy material, in solid wire or strand wires
Insulation Layer:
Fiberglass              (ambient temperature range 0-300ºC
PVC                       (ambient temperature range 0-105ºC)
Telflon                  (ambient temperature range 0-350ºC)
Silicone rubber   (ambient temperature range 0-180ºC)
Jacket layer materials: fiberglass, PVC, teflon, silicone rubber
Galvanized layer: stainless steel, tinned brass

3.Standard: conforms to IEC584 standard.

4. Color Code:Table 1

Thermocouple Extension wire Type JX-FG/FG/SSB-2×7/0.2mm
Description:

1, SUBJECT
Fiberglass braided insulated thermocouple wire, type J, stranded wire with metallic
overbraid, 2×7/0.2mm, standard tolerances and color code.

2, TECHNICAL FEATURES

A. Conductors:
Stranded thermocouple extension wire

B. Insulation:
Braided fiberglass (400ºC)

Color code

C. Assembly:
Two conductors (positive and negative) parallel construction.

D. Overall Jacket
Braided fiberglass (400ºC)

E. Metal Overbraid
Stainless steel round wire braid, 85% minimum coverage

3, DIMENSIONS AND TOLERANCES

4, CALIBRATION TOLERANCE

6. How to select:Order Code: e.g.

1                           2                                                 3                         4                          5                       6

1  Thermocouple Types: K, J, E, T, N, S          RTD: Cu, Ni

2  Conductot dimension:
2*7/0.3 means 2 cores,  each core includes 7 strands wire,
each wire diameter is 0.3mm, more example: 2×7/0.2, 2×4/0.65, 2×1/0.3 etc.
Other way to symbol the conductor dimensions:
Conductor square meter: 0.25mm²
AWG standard (see*Table 2)

3 Insulated layer materials:
FG: fiberglass   PVC: PVC      TF: teflon        SR: silicone rubber

4 Jacket layer material
FG: fiberglass   PVC: PVC      TF: teflon        SR: silicone rubber

5 Galvanized Layer material:   SS: stainless steel  TB: tinned brass

6Color Code:
ANSI: American standard   DIN: Germany standard    BS:Britain standard
NFC: France Standard          JIS: Japan Standard           IEC: IEC standard