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Pyromation’s high-temperature thermocouples are designed to operate in a temperature range of (982 to 1871) ºC [1800 to 3400] ºF. They are designed for use in vacuum furnaces and other applications requiring high-temperature measurement in controlled atmospheric conditions. Metal sheaths of Alloy 600 and molybdenum are available as well as alumina ceramic sheaths. All assemblies are supplied with ungrounded, isolated hot junctions. The construction style consists of an alumina insulated element inside the tube of choice as listed below. Special construction designs are also available.
Unit of Measure

Specifications

Brands

 N/A Pyromation®

Configuration Code

 N/A ID10

Wire Gauge

 N/A Code B24U - 24 Code C24U - 24 Code R24U - 24 Code R26U - 26 Code S24U - 24 Code S26U - 26

Material

 N/A Code B24U - Alloy 600 Code B24U - Alumina Code B24U - Molybdenum Code C24U - Alloy 600 Code C24U - Alumina Code C24U - Molybdenum Code R24U - Alloy 600 Code R24U - Alumina Code R24U - Molybdenum Code R26U - Alloy 600 Code R26U - Alumina Code R26U - Molybdenum Code S24U - Alloy 600 Code S24U - Alumina Code S24U - Molybdenum Code S26U - Alloy 600 Code S26U - Alumina Code S26U - Molybdenum

Sheath Diameter

 N/A Code 302 - 0.188 inCode 303 - 0.188 inCode 402 - 0.250 inCode 403 - 0.250 inCode 617 - 0.275 (Sheath supplied with 3/8" Outer Diameter (OD). x 4" long stainless steel sleeve on tube cold end. Only available with size B and C compression fittings.) in

Maximum Temperature

 N/A Code 302 - 1482 ºCCode 302 - 1704 ºCCode 302 - 1871 ºCCode 303 - 1149 ºCCode 402 - 1482 ºCCode 402 - 1704 ºCCode 402 - 1871 ºCCode 403 - 1149 ºCCode 617 - 1482 ºCCode 617 - 1704 ºCCode 617 - 1871 ºCCode 302 - 2700 ºFCode 302 - 3100 ºFCode 302 - 3400 ºFCode 303 - 2100 ºFCode 402 - 2700 ºFCode 402 - 3100 ºFCode 402 - 3400 ºFCode 403 - 2100 ºFCode 617 - 2700 ºFCode 617 - 3100 ºFCode 617 - 3400 ºF

Sheath "X" Length

 N/A Code 12 inCode 18 inCode 24 inCode 30 inCode 36 in

Sheath Mounting Material

 N/A Code 05A (One-Time Adjustable Compression Fittings) - Stainless Steel Code 05B (One-Time Adjustable Compression Fittings) - Stainless Steel Code 05C (One-Time Adjustable Compression Fittings) - Stainless Steel Code 12A (Re-Adjustable Compression Fittings) - Stainless Steel Code 12B (Re-Adjustable Compression Fittings) - Stainless Steel Code 12C (Re-Adjustable Compression Fittings) - Stainless Steel

Sheath Mounting National Pipe Thread (NPT) Size

 N/A Code 05A - 1/8 inCode 05B - 1/4 inCode 05C - 1/2 inCode 12A - 1/8 inCode 12B - 1/4 inCode 12C - 1/2 in

Sheath Mounting Diameter

 N/A Code 05A - 3/16, 1/4 inCode 05B - 3/16, 1/4, 3/8 inCode 05C - 1/4, 3/8 inCode 12A - 3/16, 1/4 inCode 12B - 1/4, 3/8 inCode 12C - 1/4, 3/8 in
Sheath Mounting Fittings1 N/A One-Time Adjustable Compression Fittings
Code 05A
Stainless Steel Type
1/8 Inch (in) NPT Size
3/16, 1/4 Inch (in) Available Sheath Diameter

Code 05B
Stainless Steel Type
1/4 Inch (in) NPT Size
3/16, 1/4, 3/8 Inch (in) Available Sheath Diameter

Code 05C
Stainless Steel Type
1/2 Inch (in) NPT Size
1/4, 3/8 Inch (in) Available Sheath Diameter

Re-Adjustable Compression Fittings
Code 12A
Stainless Steel Type
1/8Inch (in) NPT Size
3/16, 1/4Inch (in) Available Sheath Diameter

Code 12B
Stainless Steel Type
1/4Inch (in) NPT Size
1/4, 3/8Inch (in) Available Sheath Diameter

Code 12C
Stainless Steel Type
1/2Inch (in) NPT Size
1/4, 3/8Inch (in) Available Sheath Diameter

Note for Sheath Mounting Fittings

 N/A Fluorinated Ethylene Propylene (FEP) gland standard (400 °F max.)

Plug and Jack Terminations

 N/A Code 4 - Standard plug Code 4,HT - Standard hi-temp plug 385 ºC (725 °F) Code MC - Mating connector

Sheath Outer Diameter (OD)

 N/A Code 4 - 3/16 to 3/8 inCode 4,HT - 3/16 to 3/8 in

Head Terminations

 N/A Code 8HN31 - Aluminum screw-cover head with 1/2" National Pipe Thread (NPT) stainless steel hex fitting (Only with platinum elements in 303-403 sheaths.) Code 9CF25 - Mini nickel-plated steel head Code 9CF31 - Aluminum screw-cover head secured to sheath with Stainless Steel compression fitting

Leadwire Transitions

 N/A Code 15 - Extension leadwire transition fitting with relief spring 204 ºC (400 °F) (Only with platinum elements in 303-403 sheaths.) Code 15HT - Extension leadwire transition fitting with relief spring and High temperature potting 538 ºC (1000 °F) (Only with platinum elements in 303-403 sheaths.)

Wire Gauge Insulation

 N/A Code F1 - Solid; fiberglass insulation Code F1A - Solid; fiberglass insulation with flexible S.S. armor Code T1 - Solid; fluoropolymer insulation Code T1A - Solid; fluoropolymer insulation with flexible S.S. armor

Thermocouple Types

 N/A Code F1 - R, S, B Code F1A - R, S, and B Code T1 - R, S Code T1A - R, S

Note for Extension Leadwire

 N/A To complete order code, insert wire code and 3 digit "B" length code. Example: F1A036 = 36" "B" length

Note

Note

 N/A All assemblies are provided with wire seal fitting except platinum element assemblies in Alloy protection tubes.

All C24 assemblies in alumina protection tubes can only be used in inert or vacuum atmospheres.

For duplex elements use order code pre-fix letter twice. Example: RR24U

CC24 assemblies not available in 0.188" O.D. sheath diameter.

Sheath supplied with 3/8" O.D. x 4" long stainless steel sleeve on tube cold end. Only available with size B and C compression fittings.

Consult factory for availability of other diameters or insulations.
  • 1 Specify other lengths in 1" increments FEP gland standard