Heavy Duty Industrial Metal Sheathed Thermocouples

Heavy Duty Thermocouple with heavy duty cast iron head

  • Type 13 assemblies are available with thick wall protective sheaths in Stainless Steel, Inconel 600*, Incoloy 800*, Chromium Iron, Nicrobell 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
  • Calibration is available for our range of Heavy Duty Industrial Thermocouple assemblies
  • Suited to arduous temperature measurement up to 2280°F/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
  • See detailed information on how a thermocouple works

  • 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" NPT Welded Fixed Position Screwed Bush
    1" NPT Welded Fixed Position Screwed Bush
    4" Adjustable
    Cast Iron Flange
    7a. Length below Tube Mounting to Tip

    8. Optional 4 to 20mA Transmitter
    9. 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

    Send Enquiry  


    Contact Us

    About TC

    FREE Guide

    Privacy Policy

    Terms and Conditions

    FREE Wallchart Guide

    Join over 500,000 engineers and buyers who have already received our FREE 74 page A3 Guide to Thermocouple and Resistance Thermometry

    Company Name
      Address 1
    Your Name
      Address 2
    Title / Dept.
      ZIP Code
    Company Name
    Your Name
    Title / Dept.
    Address 1
    Address 2
    ZIP Code

    We will only ever use the information you provide to occasionally contact you regarding our products and we will never disclose your details to a third party. Our privacy policy can be viewed here

    I agree to the terms and conditions listed in the Privacy Policy

    View our ISO 90001/2008 Certficate

    Thermocouple Sensors
    Mineral Insulated Thermocouples
    Thermocouples with Mini Plug
    Thermocouples with Terminal Head
    Thermocouples with Wire
    High Temperature Thermocouples
    General Purpose Thermocouples
    IECex/ATEX 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 Wire
    RTD Pt100 Sensors with Mini Plug
    Autoclave RTD Pt100 Sensors
    RTD Pt100 with Terminal Head
    IECex/ATEX Platinum Resistance Thermometers
    Fast Response RTD Pt100 Sensors
    Air Temperature RTD Pt100 Sensors
    Magnetic RTD Pt100 Sensors
    PVC Single Pair Thermocouple and Extension Wire
    PFA Single Pair Thermocouple and Extension Wire
    Fiberglass Single Pair Thermocouple & Extension Wire
    PVC Multipair Thermocouple Wire
    PFA Multipair Thermocouple Wire
    Fiberglass Multipair Thermocouple Wire
    PVC RTD Pt100 Wire
    PFA RTD Pt100 Wire
    Fiberglass RTD Pt100 Wire

    Miniature Thermocouple Connectors
    Mini Thermocouple Connectors – 410ºF Rated
    Mini Thermocouple Connectors – 660ºF Rated
    Mini Thermocouple Connectors – 1200ºF Rated
    Mini Thermocouple Connector Accessories
    Mini Thermocouple Connector Panels
    Mini Three Pin Connectors

    Standard Thermocouple Connectors
    Standard Thermocouple Connectors – 410ºF
    Standard Thermocouple Connectors – 660ºF Rated
    Standard Thermocouple Connectors – 1200ºF Rated
    Standard Thermocouple Connector Accessories
    Standard Thermocouple Connector Panels
    Standard Three Pin Connectors
    Hand Held Indicators
    Temperature Transmitters
    Temperature Controllers
    Temperature Calibrators
    Chart Recorders
    Multi Channel Indicator
    DIN Rail Mounted Transmitters
    Head Mounted Transmitters
    IECEx/ATEX Rated Transmitters
    Dry Block Calibrator
    Temperature Dataloggers

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

    Calibration Services

    © 2006- TC Measurement and Control, Inc, PO Box 65, Hillside, IL 60162
    Tel.: 877 249 1777, Fax: 708 449 0777, Email:

    1 Thermocouple Type Temperature Range (continuous) Temperature Range
    (short term)
    K Nickel Chromium vs
    Nickel Aluminium
    32°F to +2010°F -290°F to +2460°F
    J Iron vs Constantan +68°F to +1290°F -290°F to +1380°F
    N Nicrosil vs Nisil 32°F to +2010°F -450°F to +2370°F
    R Platinum - 13% Rhodium vs
    32°F to +2820°F -60°F to +3180°F
    S Platinum - 10% Rhodium vs
    32°F to +2910°F -60°F to +3090°F
    B Platinum - 30% Rhodium vs
    Platinum 6% Rhodium
    +212°F to +2910°F +212°F to +3310°F
    C Tungsten - 5% Rhenium vs
    Tungsten 26% Rhenium
    +120°F to +3330°F +68°F to +4170°F
    C Tungsten - 3% Rhenium vs
    Tungsten 26% Rhenium
    32°C to +3810°F 32°F to +4710°F
    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.

    Hot junction insulated from sheath. Gives floating output with typical insulation resistance in excess of 100 megohms

    Hot junction welded to sheath tip giving earthed output and faster response to temperature changes

    Fastest response mainly for the measurement of air temperature in ducts. Restricted to a maximum operating temperature of 1110°F