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Thermocouple Cables
Thermocouple cables are specialized electrical conductors that transmit signals generated by thermocouple sensors to measurement instruments without degradation of the signals.These cables ensure the thermoelectric characteristics of the thermocouple circuit are preserved, allowing accurate temperature readings to be transmitted throughout industrial and commercial settings.
Tempsens offers thermocouple extension and compensation cables manufactured to the Seebeck coefficient of the associate thermocouple types—including Type K (Chromel-Alumel), Type J (Iron-Constantan), Type T (Copper-Constantan), Type E (Chromel-Constantan), and noble metal types R and S (Platinum-Rhodium alloys). The cables are constructed from conductors from 20 AWG to 24 AWG and with insulation materials including PVC, fiberglass, silicone rubber and PTFE to suit different temperature ranges and environmental conditions. Simplex, duplex and multipair types of cables are available from distances of installations to the remote sensors while maintaining an accuracy level to have a reading within ±0.5°C to ±2.2°C according to IEC 60584.
T-601
Thermocouple Cable (T-601)
PTFE - SILICON INSULATED - 200°C
T-451
Thermocouple Cable (T-451)
Polyimide-PTFE-Polyimide-PTFE-MICA-FG-SS Braiding insulated - 450°C
T-351
Thermocouple Cable (T-351)
PTFE-PTFE-MICA-Fiber Glass insulated - 350°C
T-251
Thermocouple Cable (T-251)
PTFE-Polyimide-Copper Screening- PTFE-Asbestos Braiding - 300°C
T-151
Thermocouple Cable (T-151)
PTFE-Polyimide-Copper Screening-Silicon insulated - 200°C
T-801
Thermocouple Cable (T-801)
PTFE-PTFE-Asbestos Braiding Insulated 300 °C
T-701
Thermocouple Cable (T-701)
PTFE-Fiber Glass-Fiber Glass-400°C
T-501
Thermocouple Cable (T-501)
PTFE - Polyimide - Copper Screening - PTFE Insulated - 260°C
T-401
Thermocouple Cable (T-401)
PTFE - PTFE -Steel Braiding Insulated - 260°C
T-301
Thermocouple Cable (T-301)
PTFE-Almyler-Screen-PTFE Insulated 260 °C
T-201
Thermocouple Cable (T-201)
PTFE-PTFE Insulated 260 °C
T-101
Thermocouple Cable (T-101)
PTFE Twisted Pair - 260°C
S-401
Thermocouple Cable (S-401)
Silicon-Polyster Tape-Copper Braiding-Silicon insulated - 200°C
S-301
Thermocouple Cable (S-301)
Silicon-Fiber Glass-SS Braiding - 200°C
S-201
Thermocouple Cable (S-201)
Silicon-Almyler Screen-Silicon - 200°C
S-101
Thermocouple Cable (S-101)
Silicon-Silicon insulated - 200°C
P-501
Thermocouple Cable (P-501)
PVC-PVC-SS Braiding insulated - 90°C
P-401
Thermocouple Cable (P-401)
PVC-Almyler-PVC-G.I. Armoring-PVC insulated - 90°C
P-301
Thermocouple Cable (P-301)
PVC-Almyler Screening-PVC - 90°C
P-201
Thermocouple Cable (P-201)
PVC-PVC insulated - 90°C
P-101
Thermocouple Cable (P-101)
PVC-Polyster Tape-Copper Braiding-PVC - 90°C
FP-101
FP-101 Thermocouple Cable
FEP - FEP INSULATED - 200°C
FP-601
FP-601 Thermocouple Cable
FEP-Polyimide-Copper Screening-FEP - 200°C
FP-501
FP-501 Thermocouple Cable
FEP-Silicon insulated - 200°C
FP-401
FP-401 Thermocouple Cable
FEP-Polyimide-Copper Screening-FEP-SS Braiding - 200°C
FP-301
FP-301 Thermocouple Cable
FEP- Almyler-FEP - 200°C
FP-201
FP-201 Thermocouple Cable
FEP-FEP-SS Braiding insulated - 200°C
About Thermocouple Cables
Key Features of Thermocouple Cables
- Temperature Range of the Insulation: PVC insulation from -20°C to +105°C. Fiberglass braids rated for 400°C continuous use. Silicone rubber rated for -60°C to +180°C. Flat PTFE rated for extending service up to 260°C in extreme environments.
- Multi-Conductor Configurations: Available with 2-wire (simplex), 4-wire (duplex), or multipair (up to 24 measurement points) configurations for unique cable runs.
- Shielding Choices: Tinned copper braid or aluminum-polyester foil, or a combination shielding approach with a shielding effectiveness ranging from 85-95% for EM noise in an electrically noisy environment.
- Conductor Construction: stranded conductor designs from 7×0.2mm up to 19×0.18mm to provide good flexibility routing through duct-work ac while remaining mechanical robust.
- Jacket Options: Outer jackets constructed of PVC, silicone, or fiberglass rated to resist oils, acids, alkalis, and abrasion in rugged industrial environments.
- Accuracy Specifications: Extension grade cable certified to ±2.2°C or ±0.75% accuracy or compensation cables certified for either Type R or Type S noble metal thermocouples, to the limit of temperature limits.
Specifications of Thermocouple Cables
| Construction | Single/ Multi-Core |
| Voltage Grade | Up to 1.1 kV |
| Conductor | TC, EX, C |
| Type of Conductor | K, T, J, E, N, R, S, B, D, C |
| Conductor Size | AWG 12 to AWG 32 |
| Conductor Stranding | Solid or Multi Strand |
| Core Insulation | PVC, XLPE, LSZH, PE, PTFE, FEP, PFA, PEEK, Silicon, ETFE, Polyimide, Fiber Glass, Ceramic Fiber, Alumina Fiber |
| Screening | Aluminum Foil Type/ Mesh Braided Type |
| Inner/Outer Sheath | PVC, LSZH, PTFE, FEP, PFA, ETFE, Silicon, Polyimide, Fiber Glass, Ceramic Fiber |
| Armoring | G.I. Armouring/ SS Braiding (For High-Temperature Insulations) |
| Colour Code | As per the Colour Code table |
| Standards | ANSI MC 96.1, IEC 584.3, IS 8784 |
Colour Code & Accuracy of Thermocouple, Extension & Compensating Cables
Applications of Thermocouple Cables
- Electric Generation: Circuits that monitor temperature within boiler, turbine, and exhaust gas application test circuits, with cable runs greater than 50 to 100 meters from sensing to control point.
- Metal Processing: Measurement of furnace temp in steel mills, foundries, and heat treatment applications where the cables are rated for 200°C ambient.
- Petrochemical Refineries: Hazardous area installations using armored or explosion-proof cable constructions rated inexpensive with IECEx or ATEX.
- Laboratory Instrumentation: Measurement applications requiring shielded low-noise cables when on research furnaces, environmental chambers and calibration instruments.
Why Choose Tempsens?
- Custom Engineering: Engineering cable designs for specific applications using armored, jacket materials, and hybrid constructions of power and signal conductors.
- Global Standards: Products to meet international thermocouple standards; ANSI standard color codes in North America; IEC standards in Europe.
- Quality Testing: 100% continuity testing, insulation resistance testing at 500V DC and thermoelectric homogeneity testing to ensure zero defects prior to shipment.
- Technical Support: Offering application expertise of cable selection based on temperature range, ambient conditions, distance from installation, and EMI environment.
FAQ
Frequently Asked Questions
Find answers to frequently asked questions related to Thermocouple Cables.
Standard thermocouples have a 2-wire or (Positive and Negative Leg) configuration; the 3-wire adds the ground wire providing shielding and safety in electrically-noisy environments, but again, Thermocouples operate 2-wire inherently unlike the RTD style of temperature sensing.
Thermocouple cables can reach lengths of 300-500 meters depending on the gauge of wire and the electromagnetic interference (EMI) in the environment; anything beyond that, it is recommended to utilize signal amplifiers or signal transmitters to prevent noise related errors and to maintain an accurate measurement.
The temperature rating of the thermocouple cable varies based on insulation type. PVC insulation can be rated in the range of -20°C to +105°C, while fiberglass braided cable can be continuous up to 400°C. Silicone rubber feeling can maintain -60 Celsius to +180 °C, while Teflon insulation can operate applications down to -200 Celsius to up to 260 Celsius.
