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Heavy Duty Industrial Metal Sheathed Thermocouples

Heavy Duty Thermocouple with heavy duty cast iron head (Type 13)

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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

mm

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
Welded Flange

7a. Length below Tube Mounting to Tip (inclusive of thread for BSPP)

mm

8. Quantity Required

Qty Required

Contact Details

Company Name

Your Name

Title/Dept.

Email

Telephone

Additional Information

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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 Platinum	0°C to +1600°C	-50°C to +1700°C
S	Platinum - 10% Rhodium vs Platinum	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. Temperature
Standard Sheath Materials
316	316L Stainless Steel Very good corrosion resistance. Wide range of applications	800°C
600	Inconel 600 Suitable for severely corrosive atmospheres. Good resistance to oxidisation. Do not use in sulphur bearing atmospheres.	1100°C
800	Incoloy 800 Suitable for severely corrosive atmospheres. Good resistance to oxidisation and carburisation. Suitable for use in sulphur bearing atmospheres.	1100°C
446	AISI 446 Suitable for severely corrosive atmospheres. Suited for use in high concentration sulphur bearing atmospheres. at high temperatures. Mount vertically above 700ºC.	1150ºC
Specialized Sheath Materials
114	Nicrotherm D^TM 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.	1250°C
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.	1250°C
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.	1200°C
601	Inconel 601 A nickel-chromium alloy with added aluminium for outstanding resistance to oxidation. Highly resistant to carburization.	1175°C
276	Hastelloy C276 Excellent corrosion resistance to both oxidising and reducing media. Excellent resistance to sulphur compounds and cholride ions.	1100°C
253	MA253 An austenitic chromium-nickel steel alloyed with nitrogen and rare earth metals. High creep strength, very goodresistance to isothermal and cyclic oxidation.	1150°C

6	Secondary Sheath Materials	Max. Temperature
IAP	Impervious Aluminous Porcelain Suitable for base metal thermocouples. Low temperature coefficient. Suited to kiln applications. Requires support at high temperatures if horizontal.	1400°C
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.	1600ºC
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.	1800°C
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.

Heavy Duty Industrial Metal Sheathed Thermocouples

Heavy Duty Thermocouple with heavy duty cast iron head (Type 13)

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