Thermocouple extension & compensating cables, transmits, the cold junction of temperature sensor installed at the measuring point to the measuring instruments installed at remote location in control room.
Extension cables are made from the same metals used in thermocouples, but for compensating cable, materials of similar thermoelectric
properties as of thermocouple in use, are employed to reduce the cost.
RJ makes all type of thermocouple Ext. and compensating cables, in almost all type of insulations with reference to international
specifications like BS 1483, ANSI MC 96.1 , DIN 43710 & Indian Standard IS 8784, for cables,various specifications like IEC, BS, VDE, IS are
taken care of, generally these cables are designed as per customers own requirement.
| CABLE MAKEUP |
| Two conductors made of two different metallic materials for example |
| Cromel-Alumel |
type KX |
| Nicr-Ni |
type KX |
| Iron-Constantan |
typeJX |
| Copper Constantan |
type TX |
| Copper Cuporonic |
RX/Sx |
|
|
| INSULATION |
| PTFE |
upto 296°C |
| HRPVC |
upto 90°C |
| XLPE |
upto 105°C |
| Silicone |
upto 180°C |
| FG braided |
200°C |
| Laying |
: |
Twisting in Pairs |
| Inner Sheathing |
: |
PTFE / PVC / FG |
| Screening / Armour |
: |
TPC / SPC / SS |
| Overall Sheathing |
: |
PTFE / PVC / FG / Rubber |
|
|
|
| CONTACT |
| Our design section, for your thermocouple extension & compensate cable requirements |
| INTERNATIONAL COLOUR CODES FOR THERMOCOUPLE CABLES INSULATION |
| Thermocouple Type |
| BRITISH |
 |
| BS:1843 |
|
| AMERICAN |
 |
| BS:1843 |
|
| GERMAN |
 |
| BS:1843 |
|
| INDIAN |
 |
| BS:1843 |
|
MATERIAL OF EXTENSION CABLE |
MV
OUTPUT |
| |
EXTENSION |
|
(+) Lead |
(-ve Lead) |
100°C |
200°C |
| K |
Chromel/Alumel |
 |
 |
 |
 |
Ni/Cr |
NiAl |
4.10 |
8.13 |
| J |
Iron/Constantan |
 |
 |
 |
 |
Iron |
Constantan |
5.26 |
10.77 |
| T |
Copper/Constantan |
 |
 |
 |
 |
Copper |
Constantan |
4.24 |
9.77 |
| E |
Chromel/Constantan |
 |
 |
 |
 |
Ni/Cr |
Constantan |
6.31 |
13.42 |
| |
|
|
|
|
|
|
|
|
|
| COMPENSATING |
|
|
|
|
|
|
|
| Vx |
Copper/Constantan (Com for Type K) |
 |
 |
 |
 |
Copper |
Constantan |
4.10 |
|
Rx
Sx |
Copper Constantan (com for Type R/S) |
 |
 |
 |
 |
Copper |
Cupronic |
0.645 |
|
|
|
