Heavy Duty Industrial Metal Sheathed Thermocouples

Heavy Duty Thermocouple with Standard IP67 die cast alloy head (Type 13)

  • Type 13 heavy duty thermocouple assemblies are available with thick wall protective sheaths in Stainless Steel, Inconel 600*, Incoloy 800*, Chromium Iron, Nicrotherm etc. as well as specialised sheath materials such as Hastelloy and Kanthal
  • Typical temperature measurement applications include: furnaces (blast, carburizing etc.), kilns, ovens, boilers, flues, cyanide/galvanising baths and general heat treatment applications
  • Alternatively, we have a large range of sensors available to buy online in various diameters and lengths
  • UKAS calibration is available for our range of Heavy Duty Industrial Thermocouple assemblies
  • Suited to arduous temperature measurement up to 1250°C
  • Depending on the sheath material selected, Type 13 assemblies are suitable for use in neutral, reducing or oxidising atmospheres and those with high concentrations of sulphurous gases
  • Available attachment fittings include adjustable flanges or welded bushes

Heavy Duty Thermocouple Enquiry Form

1. Thermocouple Type
2. Number of Elements

3. Primary (metal) Sheath Diam.

4. Primary Sheath Material
5. Total Length below head

6. Secondary Sheath Material
7. Optional Tube Mounting

Illustration Select
Not Required
3/4" BSPP Welded Fixed Position Screwed Bush
3/4" BSPT Welded Fixed Position Screwed Bush
1" BSPP Welded Fixed Position Screwed Bush
1" BSPT Welded Fixed Position Screwed Bush
100mm Adjustable
Cast Iron Flange
7a. Length below Tube Mounting to Tip (inclusive of thread for BSPP)

8. Quantity Required

Contact Details

Company Name

Your Name




Additional Information

If your enquiry is for more than one style of sensor, please email us with your requirements or use the box below

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Thermocouple Sensors
Mineral Insulated Thermocouples
Thermocouples with Mini Plug
Thermocouples with Terminal Head
Thermocouples with Cable
High Temperature Thermocouples
General Purpose Thermocouples
ATEX/IECex Thermocouple Sensors
Ceramic Thermocouple Sensors
Fast Response Thermocouple Sensors
Autoclave Thermocouple Sensors
Surface Measurement Thermocouple Sensors
FEP Insulated Thermocouple

Platinum Resistance Thermometers
Mineral Insulated RTD Pt100 Sensors
Rigid Stem RTD Pt100 Sensors
Hand Held RTD Pt100 Sensors
Surface Measurement RTD Pt100 Sensors
RTD Pt100 Sensors with Cable
RTD Pt100 Sensors with Mini Plug
Autoclave RTD Pt100 Sensors
RTD Pt100 with Terminal Head
ATEX/IECex Platinum Resistance Thermometers
Fast Response RTD Pt100 Sensors
Air Temperature RTD Pt100 Sensors
Magnetic RTD Pt100 Sensors
PVC Single Pair Thermocouple Cable
PFA Single Pair Thermocouple Cable
Fibreglass Single Pair Thermocouple Cable
PVC Multipair Thermocouple Cable
PFA Multipair Thermocouple Cable
Fibreglass Multipair Thermocouple Cable
PVC RTD Pt100 Cable
PFA RTD Pt100 Cable
Fibreglass RTD Pt100 Cable

Miniature Thermocouple Connectors
Mini Thermocouple Connectors – 220ºC Rated
Mini Thermocouple Connectors – 350ºC Rated
Mini Thermocouple Connectors – 650ºC Rated
Mini Thermocouple Connector Accessories
Mini Thermocouple Connector Panels
Mini Three Pin Connectors

Standard Thermocouple Connectors
Standard Thermocouple Connectors – 220ºC
Standard Thermocouple Connectors – 350ºC Rated
Standard Thermocouple Connectors – 650ºC Rated
Standard Thermocouple Connector Accessories
Standard Thermocouple Connector Panels
Standard Three Pin Connectors
Hand Held Indicators
Panel Indicators
Temperature Transmitters
Temperature Controllers
Temperature Programmers
Temperature Calibrators
Chart Recorders
Multi Channel Indicator
DIN Rail Mounted Transmitters
Head Mounted Transmitters
ATEX/IECEx Rated Transmitters
Dry Block Calibrator
Temperature Dataloggers

Temperature Accessories
Compression Fittings
Pressure and Vacuum Feedthroughs
ATEX/IECEx Compression Fittings

UKAS Calibration Services

Pressure Gauges
Pressure Transmitters

© 1998- TC Ltd., P.O. Box 130, UXBRIDGE, UB8 2YS, United Kingdom
Tel.: 01895 252222, Email:
© 1998- TC Ltd., P.O. Box 130, UXBRIDGE, UB8 2YS, United Kingdom
Tel.: 01895252222, Email:

1 Thermocouple Type Temperature Range (continuous) Temperature Range
(short term)
K Nickel Chromium vs
Nickel Aluminium
0°C to +1100°C -180°C to +1350°C
J Iron vs Constantan +20°C to +700°C -180°C to +750°C
N Nicrosil vs Nisil 0°C to +1100°C -270°C to +1300°C
R Platinum - 13% Rhodium vs
0°C to +1600°C -50°C to +1700°C
S Platinum - 10% Rhodium vs
0°C to +1550°C -50°C to +1750°C
B Platinum - 30% Rhodium vs
Platinum 6% Rhodium
+100°C to +1600°C +100°C to +1820°C
C Tungsten - 5% Rhenium vs
Tungsten 26% Rhenium
+50°C to +1820°C +20°C to +2300°C
C Tungsten - 3% Rhenium vs
Tungsten 26% Rhenium
0°C to +2100°C 0°C to +2600°C
Temperature ranges refer to the thermocouple type.
The temperature range of the sensor may deviate from the above,
please refer to the product description for more details
3 Sheath Material Max.
Standard Sheath Materials

316L Stainless Steel
Very good corrosion resistance.
Wide range of applications

600 Inconel 600
Suitable for severely corrosive atmospheres.
Good resistance to oxidisation.
Do not use in sulphur bearing atmospheres.
800 Incoloy 800
Suitable for severely corrosive atmospheres.
Good resistance to oxidisation and carburisation.
Suitable for use in sulphur bearing atmospheres.
446 AISI 446
Suitable for severely corrosive atmospheres.
Suited for use in high concentration sulphur bearing atmospheres. at high temperatures.
Mount vertically above 700ºC.
Specialized Sheath Materials
114 Nicrotherm DTM
For high temperature Type K and almost all Type N applications.
Very good high temperature strength.
Excellent in oxidising, carburising, reducing and vacuum atmospheres.
Don not use in sulphur nearing atmospheres.
KAN Kanthal AF / Kanthal APM
Superior resistance to carburisation, thermal shock, sagging and distortion.
Excellent mechanical properties.
Kanthal AP for diams. up to 22mm. Kanthal APM for diams. above.
160 Haynes HR160
Outstanding resistance to high temperature corrosion.
Excellent resistance to sulphur and chloride attack.
Resistant to oxidation, hot corrosion, carburization, metal dusting, nitridation and corrosion attack.
601 Inconel 601
A nickel-chromium alloy with added aluminium for outstanding resistance to oxidation.
Highly resistant to carburization.
276 Hastelloy C276
Excellent corrosion resistance to both oxidising and reducing media.
Excellent resistance to sulphur compounds and cholride ions.
253 MA253
An austenitic chromium-nickel steel alloyed with nitrogen and rare earth metals.
High creep strength, very goodresistance to isothermal and cyclic oxidation.
6 Secondary Sheath
IAP Impervious Aluminous Porcelain
Suitable for base metal thermocouples.
Low temperature coefficient.
Suited to kiln applications.
Requires support at high temperatures if horizontal.
IM Impervious Mullite
For use with precious metal thermocouples
Great mechanical strength.
Relatively inert to suplhurous and carbonaceous atmospheres.
Often used as a secondary sheath with silicone carbide primary.
IRA Impervious Recrystallised Alumina
For use with precious metal thermocouples.
Fair thermal shcok resistance. High inertness to chemicals.
Ideal for reducing carbonaceous atmospheres.
High resistance to alkaline and other fluxes.
 When added protection to the conductors is required,
a secondary closed end ceramic sheath within the primary
metal protection sheath can be specified. This composite
protection sheath will encompass the twin or four bore
insulators and their associated thermocouple elements.