JX Thermocouple Extension Wire(Silicone Rubber Insulated Wire)
Material of the Silicone Rubber Insulated JX Thermocouple Extension Wire
1. Conductors
Positive: iron
Negative: constantan
2. Insulation: silicone rubber
1. Subject
The silicone rubber insulated JX thermocouple extension wire comes with strand wire. The standard tolerance and color of this extension cable conform to the ASTM E 230/ANSI standards.

Standard thermocouple extension wire
Conductor size (AWG) | Quantity of strands and gauge |
24mm | 7/32 AWG (Ø0.2mm) |
B. Insulation
Silicone rubber (200℃)
Nominal insulation thickness: 0.30mm
Color code (ASTM E230/ANSI):
Positive: white
Negative: red
C. Assembly
The two conductors (positive and negative) of the silicone rubber insulated JX thermocouple extension wire are in parallel.
D. Overall sheath
Silicone rubber (200℃)
Nominal sheath thickness: 0.80mm
Color code (ASTM E230/ANSI): black
3. Dimensions and Tolerance
Dimensions/tolerance (mm): 4.0±0.3
Temperature range | Standard tolerance* | Special tolerance* |
0℃ - 200℃ | ±2.2℃ or 0.75% | ±1.1℃ or 0.4% |
* whichever is greater
Thermocouple type available: KX, JX, TX, EX, NX, RX,SX and other compensating cable like KCA, KCB and so on.
