Thermocouple Wire and Cable
We have over 2,000,000 metres of Thermocouple Wire and Cable available in PVC, PFA, Fiberglass insulation and more
We have large stocks of Thermocouple Wire and Cable in all thermocouple types (K, J, T, N, R/S, E etc.) in PVC, Fibreglass, PFA, Silicone Rubber, XLPE and Ceramic Fibre insulation. Our thermocouple cables are ANSI standard color coded and to ANSI tolerances, although other colour codes (such as IEC 60584.3) are also available. We offer stranded or solid wires in a wide variety of constructions from simple bellwire to screened and armoured multipair types in complex configurations, supplied on any spool length required. Thermocouple wires are also available as bare solid conductors and an extensive range of RTD (Resistance Thermometer) Wire is also available in a wide variety of constructions.
Single Pair Insulated Thermocouple CablesHeat Resistant
A wide range of HR PVC insulated cables. Constuctions such as 'Flat Twin', Twisted', Screened and Armoured cables are available. Flame Retardant
PVC Insulated FR PVC in Screened and Armoured constructions. Meeting IEC 60332.1:2004 covering tests on cables under fire conditions. XLPE Low Smoke
Includes XLPE compound on the cores and LSF material on the bedding and/or outer sheath. For situations of fire risk and emissions.Fire Resistant MICA/XLPE
Low Smoke and Fume
Fire Resistant MICA/XLPE Low Smoke and Fume Single Pairs. Incorporates high temperature MICA glass tape. Halogen free. PFA
Insulated A wide range of PFA insulated cables. Constuctions such as 'Flat Twin', Twisted' and Screened cables are available. Fibreglass and Ceramic Fibre InsulatedA range of 'Flat Twin' and braided constructions in standard (480ºC) or High Temperature (800ºC) Fibreglass, Plus Ceramic Fibre (1400ºC). Flame Retardant
Silicone Rubber Insulated Excellent properties for the reduced propagation of flame by incorporation of flame retardant Silicone Rubber compounds in a range of constructions. Kapton®
Insulated Flame retardant with resistance to chemicals and radiation with excellent physical, electrical and mechanical properties over high temperatures Stainless Steel
Braided Cables Stainless Steel Braided PVC, PFA and Fibreglass insulated cables.
Multipair Insulated Thermocouple CablesFlame Retardant
PVC Insulated A range of solid or stranded mulipair cables with an individual and collective screen. HR PVC insulated from 2 to 50 pairs. Armoured or Non Armoured. XLPE Low Smoke FR
and Fume A range of stranded multipair cables with an individual and collective screen. XLPE insulated from 2 to 36 pairs. Armoured or Non Armoured. PFA
Insulated A range of stranded multipair cables with a collective screen with or without steel wire braid. PFA insulated from 2 to 12 pairs. Fibreglass
Insulated A range of stranded multipair cables, glass fibre insulated, with or without steel wire braid. Suitable for use up to 480ºC. From 2 to 12 pairs.
Thermocouple Wire Identification
Insulated Thermocouple Wire combinations use guidelines according to ANSI color coding. You will see in the table below, that commonly, negative wires are red, the outer sheath for thermocouple grades is brown and the positive lead is color coded according to thermocouple type. For extension grade cables this positive leg color is also carried over to the outer insulation color. Fiberglass insulated wires follow the same system but have a colored tracer rather than a solid color.
Thermocouple Cable Insulation Color Codes
to IEC 60584-3
|Other (redundant) national colors|
|BS 1843||DIN 43714|
The maximum temperatures below are limited by the type of insulation used and are not indicative of the range of the thermocouple sensor which will be much higher, details of which can be found here.
There is a wide choice of insulation materials, the choice of which is governed by the application and the ambient temperature wires will be exposed to:
Heat Resistant PVC Insulated Wire
Heat Resistant (HR) PVC is a popular choice for general use in the temperature range -30ºC to +105ºC. It is available in a wide variety of constructions from simple bellwire to shielded and armored types in virtually all of the thermocouple combinations. Flame Retardant PVC is also available.
PFA Insulated Wire
PFA is ideal for higher temperature applications up to 250ºC when PVC is not adequate. It is also excellent for temperatures down to -75ºC.
PFA will withstand attack from virtualy all known chemicals, oils and fluids. All our PFA cables are made in extruded form and are therefore gas, steam and water tight which makes them most suitable for applicatiins such as autoclaves or sterilizers. We offer a wide variety of constructions from simple twisted pairs to shielded types in virtually all of the thermocouple combinations.
Fibreglass and Ceramic Fibre Insulated Wire
Excellent for high temperature applications up to 480ºC for Fibreglass, and 800ºC for High Temperature Fibreglass and 1200ºC for Ceramic Fibre. They are suitable for use at normal air ambient temperatures where there is a possibility of a hot spot which might damage lower rated cables such as PVC or PFA.
We offer a wide variety of constructions from simple lapped and fiberglass braided to stainless steel braided types in virtually all of the thermocouple combinations.
XLPE Insulated Wire
These cables incorporate XLPE (Cross Linked Polyethylene) compound on the conductors and Low Smoke and Fume (LSF) material on the bedding and/or outer sheath. They meet the requirements of IEC 60332.3 covering tests on cables under fire conditions and are ideal for situations where there is a risk of fire and the emission of smoke and gases could threaten life and property. The sheathing materials used are Halogen free and the acidic gas which is evolved during combustion is less than 0.5% in accordance with IEC 60754-1. The mechanical properties of these cables meet the requirements of IEC 60811.
MICA/XLPE Insulated Wire
Resistant to a temperature of 750°C for at least three hours in accordance with the flame test requirements of IEC 60331. These cables are essential for situations where it is of strategic importance to ensure that the cable continues to function during a major crisis involving fire. The cable incorporates a high temperature rated Mica glass tape with a XLPE (Cross Linked Polyethylene) insulation on the conductors and Low Smoke and Fume material on the bedding and/or outer sheath. Sheathing materials are Halogen free.