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Thermocouple Compensating Cable

Thermocouple Extension / Compensating Cable

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Thermocouple Extension / Compensating Cable Manufacturers

Thermocouple & Compensating Cable

Application

Thermocouple Extension Cables / Compensating Cables are used for temperature measurement connecting the Thermocouples to the measuring instruments.  Thermocouple extension cables have the same alloy as the Thermocouples while the Compensating cables have different alloys yet matching the EMF Characteristics similar to the alloys present in the Thermocouples. Both Thermocouple extension wires and Compensating cables have identical millivolt generation characteristics as of their respective thermocouples in the prescribed temperature range as per ANSI MC 96.1 / IS: 8784-1987

Our Speciality

Thermocouple extension cables and Compensating cables manufactured by us covers a wide range for different environments such as High temperature zones of upto 600 degree centigrade, Water spray zones, Flame area, Chemical and Oil leakage areas, Hot, Humid and moist conditions, Sunlight and Abrasions zones etc.

Specifications

  • Conductor materials : Multi stranded annealed Thermocouple Extension wires / Compensating wires as per IS 8784 and ANSI MC 96.1 matching with respective Thermocouples.
  • Types of Thermocouple cables : KX / KX(A) / TX / JX / RX / SX / NX / BX / EX
  • Insulation materials : PVC (70 degree C) / HR PVC (85 deg C) / PTFE (260 deg C) / XLPE (90 deg C) / FEP (205 deg C) / SPTFE (260 degree C) / Silicone Rubber (180 deg C) / Fibre Glass (600 deg C) / Ceramic Glass (800 deg C)
  • Twisting: Cores twisted into pairs
  • Shielding / Screening: Aluminium-Mylar tape with ATC drain wire or Annealed tinned Copper wire braiding (mesh type),  Both Individual pair screening and Overall screening or only Overall screening available.
  • Armouring: Both Galvanized Steel Round wire / Flat strip or Stainless Steel wire Braided type available
  • Inner / Outer Sheath: PVC 70 deg C type-ST-1 / HR PVC 90 deg C type ST-2 / FRLS type 90 deg C / LSZH  90 deg C / FEP 205 deg C / PTFE 260 deg C / Asbestos 500 deg C / Fiber Glass 600 deg C /PCP Rubber 90 deg C /CSP Rubber 90 deg C /Silicone Rubber 180 degC. 
  • Colour Coding: As per Indian standard and International standards.
  •  Applicable standards: IS: 8784-1987 / ANSI MC 96.1 / BS: 1843 / DIN 43710-4

Thermocouple Extension / Compensating cable Conductor Material Chart

  • Types: KX / KX(A) / TX / JX / RX / SX / NX / BX / EX
  • Sizes: 0.50 sq.mm, 0.75 sq.mm, 1.0 sq.mm, 1.2 sq.mm, 1.3 sq.mm, 1.5 sq.mm, 2.5 sq.mm
  • Applicable Standards: ANSI MC 96.1 / IEC / IS: 8784-1987 & other Customised Specifications
Chemical Composition Chart of Different Alloys
Type Conductor (Positive Leg) Chemical Composition Conductor (Negative Leg) Chemical Composition Temp Range
KX Ni (90%) + Cr (10%)          Chromel Ni (94%) + (Si + Mn 6%)            Alumel 0-200 deg C
NX Ni (84.4%) + Cr (14.2%) + Si (1.4%)               Nicrosil Ni (95.6%) + (Si 4.4%)            Nisil 0-200 deg C
EX Ni (90%) + Cr (10%)         Chromel Ni (44%) + (Cu & Mn 56%)            Constantan 0-100 deg C
JX Fe (100%)      Iron Ni (56%) + (Cu & Mn 44%)           Constantan 0-100 deg C
TX Cu (100%)  Copper Ni (44%) + (Cu & Mn 56%)           Constantan 0-100 deg C
RX / SX Cu (100%)   Copper Cu (2%) + (Ni & Mn 95%)            Constantan 0-100 deg C
KX(A) Cu (100%)   Copper Cu (56%) + (Ni 44%)         Constantan 0-100 deg C
BX Cu (100%)   Copper Cu (100% + Alloy)    Copper  Alloy 0-100 deg C

Additional Features

  • Available both in Thermocouple Extension grade and Compensating grade
  • Available with special limit of tolerance in EMF as per ANSI MC 96.1 / IEC 60584.3
  • Available in Indian Standard and other International Colour coding
  • Available in High Temperature range of upto 800 deg C with Non-Flammable properties
  • Oil, Chemical, Moisture, and Corrosion, resistant 
  • Armoured / Unarmoured
  • High Mechanical strength
  • Flexible and versatile
  • UV resistant
  • Flame Retardant Low Smoke with Halogen free properties
  • Fire Survival property with circuit integrity
INSULATING MATERIAL PROPERTIES CHART
Insulation Material Temp Range (deg C) Abrasion Resistance Water Resistance Flame Resistance Moisture Resistance Flexibility Oil & Chemical Resistance
PVC -40 to 105 Good Good Good Good Excellent Good
FEP -200 to 200 Excellent Excellent Excellent Excellent Good Excellent
PTFE -267 to 260 Excellent Good Excellent Good Good Excellent
PFA -260 to 260 Excellent Good Excellent Good Good Excellent
Silicon Rubber -40 to 180 Good Excellent Good Excellent Excellent Good
EPR Rubber -40 to 90 Good Excellent Good Excellent Excellent Good
Kapton -267 to 316 Excellent Good Excellent Good Excellent Good
Fiber Glass -72 to 600 Good Fair Excellent Fair Good Fair
Ceramic Glass Mica -72 to 800 Poor Poor Excellent Poor Good Fair
PE/XLPE -40 to 90 Good Good Fair Good Good Good
LOOP RESISTANCE CHART
Loop Resistance (max) for Thermocouple Extension & Compensating Cables at 20 deg C 
Thermocouple Cable Type KX KX(A) TX JX EX RX/SX
Wire Size Ohm/km Ohm/km Ohm/km Ohm/km Ohm/km Ohm/km
20 AWG 0.50 sq.mm 1980 970 970 1200 2500 266
18 AWG 0.82 sq.mm 1210 620 620 760 1520 169
16 AWG 1.31 sq.mm 760 390 390 460 970 104
1.5 sq.mm 660 310 310 400 830 86

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